RYAN P. O’HAYRE

CURRENT ADDRESS PERMANENT ADDRESS COLORADO SCHOOL OF MINES 2308 Fossil Trace Dr.METALLURGICAL AND MATERIALS ENG. HILL HALL 354 Golden, CO. 804011500 ILLINOIS ST. rohayre@mines.eduGOLDEN, CO. 80401

EDUCATION 2004 Ph.D. Stanford University, Stanford, CA. Materials Science and Engineering

Thesis: “Micro-scale Electrochemistry: Application to Fuel Cells”

2001 M.S. Stanford University, Stanford, CA. Materials Science and EngineeringO. Cutler Shepard Award as the outstanding MS student

1999 B.S. Colorado School of Mines, Golden, CO. Metallurgical and Materials Engineering, Minor in Public Affairs

HONORS/AWARDS 2017 Ross Cofin-Purdy Award- Most valuable contribution to the ceramics technical literature over the

previous two years- American Ceramics Society2015 Research Excellence Award- Colorado School of Mines2013 Finalist, Young Scientist Award- International Society for Solid-State Ionics2012 Visiting Senior Professorship for International Scientists- Chinese Academy of Sciences2012 CSM Alumni Teaching Award- For Sustained Instructional and Pedagogical Excellence at the

Colorado School of Mines2011 Frontiers of Science Kavli Fellow2010 ASM Bradley Stoughton Award for Young Teachers, ASM International2010 Outstanding Faculty Award, Dept of Metallurgical and Materials Engineering, CSM2009 Presidential Early Career Award for Science and Engineering, U.S. White House2009 Outstanding Faculty Award, Dept of Metallurgical and Materials Engineering, CSM2007 Army Young Investigator Award, DoD ARO2005-2006 International Postdoctoral Research Fellowship, National Science Foundation2003 Pan-American Advanced Studies Institute Fellow, Materials for Energy Conversion and

Environmental Protection, Rio De Janeiro, Brazil1999-2002 Stanford Graduate Fellowship, Stanford University2001 O. Cutler Shepard Award- For the Outstanding Materials Science MS Student, Stanford University1996-1999 Boettcher Scholar, Boettcher Foundation, State of Colorado

1998 Stuart, Herbert Z. Endowed Scholarship, Colorado School of Mines 1997 Tucker (Metallurgy) Scholarship, Colorado School of Mines

1996 National Merit Scholar1996-1999 Dean’s List, Colorado School of Mines (all years)

Activities: Organizer, ECI Conference on Nonstochiometric Compounds, Sante Fe, NM. Sept 18-22nd, 2016Co-organizer, 4th International School on Materials for Energy and Sustainability (ISMESIV), Golden, CO. July 12-19th, 2015Co-organizer, 20th International Conference on Solid State Ionics (SSI20), Keystone, CO. June 14-19th, 2015Co-organizer, ECI Conference on Nonstochiometric Compounds, Taormina, Italy, Sept 2013Co-organizer, MRS Spring Meeting, San Francisco, CA March 2010Volume Organizer, MRS Bulletin (2008-2009)

Stanford Materials Research Society Chapter President (2000-2002)National Volunteer Ski Patrol (Loveland Ski Area, 1998-Present)

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PROFESSIONAL EXPERIENCE June 2014-Present Professor, Colorado School of Mines, Golden, CO.

Department of Metallurgical and Materials Engineering Research Experience: Director, Advanced Energy Materials Laboratory (materials.mines.edu/rc/aeml). Primary research interests/expertise in fuel cells, catalysis, electrochemistry, solid-state-ionics, electronic and ionic oxides. Major research collaborations with the Colorado Center for Advanced Ceramics, the Colorado Fuel Cell Center, the Renewable Energy Materials Research Science and Engineering Center and the National Renewable Energy Laboratory (NREL).Teaching Experience: Electrical Properties of Materials, Metallurgical and Materials Engineering Kinetics, Fuel Cell Science and Technology.

June 2010-May 2014 Associate Professor, Colorado School of Mines, Golden, CO.Department of Metallurgical and Materials Engineering

Aug 2006-May 2010 Assistant Professor, Colorado School of Mines, Golden, CO.Department of Metallurgical and Materials Engineering

2005-2006 NSF International Fellow, Technical University of Delft, The Netherlands.Department of Applied Inorganic Chemistry

Research Experience: Investigation of nanostructured TiO2/CuInS2 solar cells. Nanostructured cells offer unique potential for low-cost, high efficiency energy conversion. I applied impedance measurement and AFM-based local probe techniques to understand the role of the nanostructured interface in determining solar cell performance.

Teaching Experience: Guest Lecturer at TU Delft in NS3541: Nanoparticulate Materials, a graduate-level nanotechnology class.

2004-2006 Acting Assistant Professor, Stanford University, Stanford, CA. Department of Mechanical Engineering

Research Experience: Coordinated ongoing research in the area of AFM electrochemistry, PEM fuel cell kinetic and mass transport scaling, and nano-scale catalytic properties. Lead author for a new upper level undergraduate/grad level fuel cell textbook.

Teaching Experience: Designer and instructor for ME 260: Fuel Cell Science and Technology. Offered for the first time in 2004, this class provided advanced undergraduates/introductory graduates a chance to learn and apply the fundamentals behind fuel cell science and technology.

Supervisory Experience: Supervised one Ph.D. graduate student studying kinetic scaling in nano-size Pt catalyst particles.

1999-2004 Graduate Research Assistant, Stanford University, Stanford, CA. Department of Materials Science and Engineering (Thesis Advisor: Fritz B. Prinz)

Research Experience: Developed a novel spatially resolved impedance measurement system for the investigation of heterogeneous electrochemical systems. Collaborated on miniature fuel cell systems development using silicon MEMS and printed circuit board technologies. Successfully investigated various scaling phenomena in miniature fuel cell systems including ultra-thin film catalyst deployment and lateral ionic conduction in planar array fuel cells. Established testing and measurement facilities for fuel cell characterization including electrochemical impedance spectroscopy, cyclic voltammetry, and atomic force microscopy.Supervisory Experience: Supervised three undergraduate students. One developed a refillable direct methanol fuel cell device; two others developed a fuel cell scooter.

TEACHING EXPERIENCE 2014-Present Professor, Colorado School of Mines, Dept. of Metallurgical and Materials Engineering

Courses: Metallurgical and Materials Engineering Kinetics, Fuel Cell Science and Technology, Electrical Properties of Materials

2010-2014 Associate Professor, Colorado School of Mines, Dept. of Metallurgical and Materials EngineeringCourses: Fuel Cell Science and Technology, Electrical Properties of Materials

2006-2010 Assistant Professor, Colorado School of Mines, Dept. of Metallurgical and Materials Engineering

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Courses: Fuel Cell Science and Technology, Metallurgical and Materials Engineering Kinetics, Electrical Properties of Materials

2005 Guest Lecturer, Technical University of DelftCourse: Nanoparticulate Materials. I was invited to discuss the application of nanotechnology to energy conversion devices. I focused on fuel cells and solar cells.

2004 Acting Assistant Professor, Stanford University Mechanical Engineering DepartmentCourse: Fuel Cell Science and Technology. Offered for the first time in 2004, this class provided advanced undergraduates/introductory graduates a chance to learn and apply the fundamentals behind fuel cell science and technology.

2003 Head TA/Guest Lecturer , Stanford University Materials Science DepartmentCourse: Materials Selection and Design. Presented lectures on thermal materials design and fuel cell characterization. Developed and led the lab-project section of class.

2000-2002 Host, Stanford University Materials Madness GameshowHost of an annual game-show introduction to materials science for elementary school children. Part of Stanford’s annual Exploring New Worlds event.

1997-1998 Auto-CAD Tutor, Colorado School of Mines EPICS Department

PUBLICATIONS/PRESENTATIONS Books and Book Chapters

9. *Ryan O’Hayre, Suk-Won Cha, Whitney Colella, Fritz B. Prinz, (2009). Fuel Cell Fundamentals, 3rd Edition. New York, New York: John Wiley and Sons, Inc. ISBN-13: 9781119113805

8. *Ryan O’Hayre, (2015). Materials Kinetics Fundamentals, New York, New York: John Wiley and Sons, Inc. ISBN-13: 978-1-118-97289-2

7. *P. Periasamy, J.J. Berry, D.S. Ginley, P.A. Parilla and R.P. O’Hayre, (2013) “Point-Contact Metal-Insulator-Metal Architecture: A Facile Approach For Materials Screening Studies and Beyond”, in Rectenna Solar Cells, Garret Moddel and Sachit Grover (eds.), Springer. ISBN 978-1-4614-3715-4

6. *W. Lee, M. Lee, R. O'Hayre, F. Prinz, (2013) “Nanoscale Electrochemistry in Energy Related Systems using Atomic Force Microscopy”, in Scanning Probe Microscopy for Energy Research: Materials, Devices, and Applications, World Scientific. ISBN-13: 978-9814434706

5. *Jianhua Tong and Ryan O’Hayre, (2010) “Mixed Ionic and Electronic Conducting Ceramic Membranes for Oxygen Permeation”, in Membranes for Membrane Reactors, John Wiley and Sons, Inc. ISBN: 978-0-470-74652-3

4. *Ryan O’Hayre, Suk-Won Cha, Whitney Colella, Fritz B. Prinz, (2009). Fuel Cell Fundamentals, 2nd Edition. New York, New York: John Wiley and Sons, Inc. ISBN-13: 978-0470258439

3. *Ryan O’Hayre, (2009). Probing Electrochemistry at the Micro Scale: Applications in Fuel Cells, Ionics, and Catalysis. Berlin, Germany: VDM Verlag, Inc.

2. *Ryan O’Hayre, Minhwan Lee, Fritz B. Prinz, Sergei Kalinin, (2007). “Frequency Dependent Transport Imaging by Scanning Probe Microscopy”, in Scanning Probe Microscopy: Electrical and Electromechanical Phenomena at the Nanoscale, Volume 1. A. Gruverman and S. V. Kalinin (Eds.), Springer Verlag, New York, New York. ISBN-13: 978-0387286679

1. Ryan O’Hayre, Suk-Won Cha, Whitney Colella, Fritz B. Prinz, (2006). Fuel Cell Fundamentals. New York, New York: John Wiley and Sons, Inc. ISBN-13: 978-0471741480

Journal Publications (* indicates since arrival at CSM):

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123. C. Bernuy-Lopez, L. Rioja-Monllor, T. Nakamura, S. Ricote, R. O’Hayre, K. Amezawa, M.A. Einarsrud, T. Grande, “Effect of cation ordering on the performance and chemical stability oflayered double perovskite cathodes”, in review, Materials

122. *C. Duan, R.J. Kee, H. Zhu, C. Karakaya, S. Ricote, A. Jarry, E. J. Crumlin, R. Braun, N. P. Sullivan, R. O’Hayre, “Highly durable, coking and sulfur tolerant, fuel-flexible protonic ceramic fuel cells”, in review, Nature.

121. *A. N. Cavendor, R. P. O’Hayre, P. A. Parilla, J. D. Perkins, and D. S. Ginley, “Persistent thermally-activated conductivity increases in amorphous In-Zn-O transparent semiconductors”, submitted, Phys. Rev. B.

120. *K.C. Neyerlin, S. Pylypenko, J. E. Leisch, T. Olson, K. O’Neill, R. O’Hayre, B. Pivovar, T. Gennett and H. Dinh, “Enhancing the Methanol Oxidation Reaction via Tuning the Catalyst-Support Interaction”, submitted,

Electrochemical and Solid State Letters.

119. *A. Dhanda, R. O'Hayre, and H. Pitsch, “Oxygen Reduction Reaction on Pt(111)/Nafion and Pt(100)/Nafion Interfaces in Single Crystal PEM Fuel Cells”, submitted, Journal of Electrochemical Society.

118. *M. Shang, J. Tong, M. Sanders, A. McDaniel, R. O’Hayre and W. C. Chueh, “Nonstoichiometric perovskite-type oxides for solar thermochemical fuels production”, submitted, Energy and Environmental Science.

117. L. Bian, L. Wang, J. Cheng, C. Duan, R. O’Hayre, and K.C. Chou, “Electrochemical performance and stability of La0.6Sr0.4Fe0.9Nb0.1O3-δ symmetric electrode for direct carbon monoxide solid oxide fuel cell, submitted, J. Mater. Chem. A.

116. *D.R. Clark, D.R. Diercks, S. Ricote, B.P. Gorman, R. O’Hayre, “Probing the Influence of Processing on Oxide Grain-Boundary Chemistry via Atom Probe Tomography: The Case of Yttrium-Doped Barium Zirconate”, submitted, J. Amer. Cer. Soc.

115. *D. Clark, D. Diercks, T. Tauer, S. Ricote, J. W. Medlin, B. Gorman, and R. O’Hayre, “Accurately quantifying stoichiometry in the multi-cation perovskites BaZr0.9Y0.1O3-δ and BaCe0.2Zr0.7Y0.1O3-δ using atom probe tomography”, submitted, J. Mater. Chem. A.

114. *Robert Kee, Huayang Zhu, Benjamin Kee, Canan Karakaya, Ryan O'Hayre, “Equilibrium thermodynamic predictions of coking propensity in membrane-based dehydrogenation of hydrocarbons and alcohols”, accepted, Cat. Today. (https://doi.org/10.1016/j.cattod.2017.10.036)

113. *M. Dzara, J. Christ, P. Joghee, C. Ngo, C. Cadigan, G. Bender, R. Richards, R. O'Hayre, S. Pylypenko, “Oxygen reduction catalysts based on La and Al co-doped CaMnO3 perovskite oxides: from interplay of surface properties to AEMFC performance, J. Power Sources, 375, 265-276 (2018) (https://doi.org/10.1016/j.jpowsour.2017.08.071)

112. *L. Bian, C. Duan, L. Wang, R. O’Hayre, J. Cheng, N. Chen, F. Li, K.C. Chou, “Ce-doped La0.7Sr0.3Fe0.9Ni0.1O3-δ as Symmetric Electrode for High Performance Direct Hydrocarbon Solid Oxide Fuel Cell, J. Mater. Chem. A., 5, 15253-15259 (2017). DOI: 10.1039/C7TA03001K

111. *X. Cui, R. O’Hayre, S. Pylypenko, L. Chen, J. Shi, “Mesoporous Ba0.5Sr0.5Co0.8Fe0.2O3-δ Perovskite as an Efficient Pt-Free Electrode Catalyst for Oxygen Reduction Reaction”, Dalton Transactions, 46(40) 13903 (2017). DOI 10.1039/C7DT03082G

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110. *T. Park, I. Chang, J.H Jung, H.B. Lee, S.H. Ko, R. O'Hayre, S.J. Yoo, S.W. Cha, “Effect of Assembly Pressure on the Performance of a Bendable Polymer Electrolyte Fuel Cell Based on a Silver Nanowire Current Collector”, Energy, 134, 412-419, (2017). https://doi.org/10.1016/j.energy.2017.05.197

109. C. Duan, D. Hook, Y. Chen, J. Tong, R. O’Hayre, “Zr and Y co-doped perovskite as a stable, high performance cathode for solid oxide fuel cells operating below 500 °C”, Energy & Environmental Science, 10, 176–182 (2017) DOI: 10.1039/C6EE01915C

108. *D.R. Clark, H. Zhu, D.R. Diercks, S. Ricote, R.J. Kee, A. Almansoori, B.P. Gorman, R. O’Hayre, “Probing Grain-Boundary Chemistry and Electronic Structure in Proton-Conducting Oxides by Atom Probe Tomography”, Nano Letters, 16(11), 6924-6930, (2016) DOI: 10.1021/acs.nanolett.6b02918

107. *J.M. Christ, C. Ngo, T. Batson, C.A. Cadigan, J. Tong, R.M. Richards, R. O’Hayre, and S. Pylypenko, “Synthesis of High Surface Area CaxLa(1-x)Al(1-x)MnxO(3-δ) Perovskite Oxides for Oxygen Reduction Electrocatalysis in Alkaline Media”, Catalysis Science and Technology, 6(21), 7744-7751 (2016)

106. *S. Nikodemski, A.A. Dameron, J.D. Perkins, R.P. O’Hayre, D.S. Ginley, J.J. Berry, “The Role of Nanoscale Seed Layers on the Enhanced Performance of Niobium doped TiO2 Thin Films on Glass”, Sci. Reports, 6, 32830 (2016) DOI: 10.1038/srep32830

105. *R. Osgood III, S. Giardini, J. Carlson, P. Periasamy, H. Guthrey, R. O’Hayre, M. Chin, B. Nichols, M. Dubey, G. E. Fernandes, J. H. Kim, J. Xu, P. Parilla, J. Berry, D. Ginley, “Conduction and rectification in NbOx- and NiO-based metal-insulator-metal diodes”, J. Vac. Sci. and Tech. A., 34(5), 051514 (2016) DOI: 10.1116/1.4960962

104. S. Nikodemski, C. Duan, J. Tong, R. O’Hayre, “Ionic Transport Modification in Proton Conducting BaCe0.6Zr0.3Y0.1O3-δ with Transition Metal Oxide Dopants”, Solid State Ionics, 294, 37-42 (2016). http://dx.doi.org/10.1016/j.ssi.2016.06.020

103. *K.N. Wood, S.T Christensen, D. Nordlund, A.A. Dameron, C. Ngo, H. Dinh, T. Gennett, R. O'Hayre, S. Pylypenko, “Spectroscopic investigation of nitrogen‐functionalized carbon materials”, Surface and Interface Analysis, 48 (5), 283–292 (2016). DOI: 10.1002/sia.6017

102. *D.R. Diercks, J. Tong, H. Zhu, R.J. Kee, G. Baure, J.C. Nino, R. O’Hayre, B.P. Gorman, “Quantification of 3-D Space Charge Effects at Individual Oxide Grain Boundaries by Atom Probe Tomography”, J. Mater. Chem. A, 4, 5167-5175 (2016). DOI: 10.1039/C5TA10064J

101. *A. M. Deml, R. O'Hayre, C. Wolverton, V. Stevanovic, “Predicting DFT total energies and enthalpies of formation of metal-nonmetal compounds by linear regression”, Phys. Rev. B. 93, 085142, (2016).

100. *Y. Liu, X. Zhu, M. Li, R. O’Hayre, W. Yang, “Nanoparticles at grain boundaries inhibit the phase transformation of perovskite membrane”, Nano Letters, 15 (11), 7678-7683 (2015).

99. *K.J. Albrecht, C. Duan, R. O'Hayre, R.J. Braun, “Modeling Intermediate Temperature Protonic Ceramic Fuel Cells”, ECS Transactions 68 (1), 3165-3175 (2015).

98. * J, Ha, R. O'Hayre, J. Kim, and H. Lee, “Local atomic structure analysis of x(Na0.5K0.5)NbO3(1-x)BaTiO3 using x-ray absorption fine structure spectroscopy, Ceramics International, 41(9), 12027-12031 (2015).

97. *C. Duan, J. Tong, M. Shang, S. Nikodemski, M. Sanders, S. Ricote, A. Almonsoori, R. O’Hayre, “Readily Processed Protonic Ceramic Fuel Cells with High Performance at Low Temperatures”, Science, 349 (6254), 1321-1326 (2015).

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96. *K. N. Wood, A. A. Dameron, P. Joghee, G. Bender, R. O’Hayre and S. Pylypenko, “Nitrogen Post-Modification of PtRu/Carbon Catalysts for Improved Methanol Oxidation Reaction Performance in Alkaline Media”, J. Electrochem. Soc. 162 (8), F913-F918 (2015)

95. *P. Joghee, J. Nekuda Malik, S. Pylypenko, R. O’Hayre, “A review on direct methanol fuel cells - in the perspective of energy and sustainability”, MRS Energy and Sustainability, 2, E3 (2015)

94. *A. M. Deml, A. M. Holder, R. P. O’Hayre, C. B. Musgrave, and V. Stevanović, “Intrinsic Material Properties Dictating Oxygen Vacancy Formation Energetics in Metal Oxides”, J. Phys. Chem. Lett., 6, 1948−1953 (2015)

93. *J.S. Fish, S. Ricote, R. O’Hayre, N. Bonanos, “Hydrogen permeability and electrical properties of the protonic/electronic composite BaCe0.2Zr0.7Y0.1O3-δ/Sr0.95Ti0.9Nb0.1O3-δ (BCZY27/STN95)”, J. Mater. Chem. A. 3, 5392-5401 (2015)

92. *A. Subramaniyan, J.D. Perkins, R.P. O’Hayre, D.S. Ginley, S. Lany, A. Zakutayev, “Non-equilibrium synthesis, structure and opto-electronic properties of Cu2-2xZnxO alloys”, J. Mater. Sci. 50(3), 1350-1357 (2015)

91. *A. Deml, V. Stevanovic, A. Holder, M. Sanders, R. O’Hayre, and C. Musgrave, “Tunable oxygen vacancy formation energetics in the complex perovskite oxide SrxLa1-xMnyAl1-yO3”, Chem. Mater. 26(22), 6595-6602 (2014).

90. *J. Ryu, R. O’Hayre, H. Lee, “Structural analysis and electrochemical properties of cobalt-doped Sr0.9Ce0.1MnO3-δ cathode for IT-SOFCs”, J. Mater. Res. 29 (22), 2667-2672 (2014).

89. *A.H. McDaniel, A. Ambrosini, E.N. Coker, J.E. Miller, W.C. Chueh, R. O’Hayre, J. Tong, “Nonstoichiometric perovskite oxides for solar Thermochemical H2 and CO Production.” Energy Procedia, 49, 2009-2018 (2014).

88. *T. Tauer, R. O’Hayre, and W. Medlin, “Ab-initio investigation of proton stability at BaZrO3 interfaces, Chem. Mater. 26 (17), 4915-4924 (2014).

87. *J. Ryu, R. O’Hayre, H. Lee, “Polarization resistance and composite cathode of Ce doped SrMnO3 system for intermediate temperature solid oxide fuel cells”, Solid State Ionics, 260, 60-64 (2014).

86. *A. Deml, V. Stevanovic, C. Muhich, C. Musgrave, R. O’Hayre, “Oxide enthalpy of formation and band gap energy as accurate descriptors of oxygen vacancy formation energetics”, Energy and Env. Sci. 7(6), 1996-2004 (2014).

85. *P. Joghee, S. Pylypenko, K. Wood, G. Bender, R. O’Hayre, “High performance alkaline direct methanol fuel cell employing a nitrogen post-doped PtRu/C anode”, ChemSusChem, 7, 1854-1857 (2014).

84. *R. M. Pasquarelli, M. F.A.M. van Hest, P.A. Parilla, J.D. Perkins, R.P. O’Hayre, and D.S. Ginley, “Processing-Phase Diagrams: A New Tool for Solution-Deposited Thin-Film Development Applied to the In5O(OPri)13 - In2O3 System”, J. Mater. Chem. C. 2, 2360-2367 (2014).

83. *T. Noh, J. Ryu, R. O’Hayre, and H. Lee, “Effect of Cu doping on the electrochemical properties and structural phases of La0.8Sr0.2Mn1-xCuxO3 (0≤x≤0.2) at elevated temperature”, Solid State Ionics, 260, 30-35 (2014).

82. *A. Subramaniyan, J.D. Perkins, R.P. O’Hayre, S. Lany, V. Stevanovic, D.S. Ginley, A. Zakutayev, “Non-equilibrium Deposition of Phase Pure Cu2O Thin Films at Reduced Growth Temperature”, APL Materials, 2, 022105, pp1-6 (2014).

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81. *K. Wood, R. O’Hayre, S. Pylypenko, “Recent Progress on Nitrogen/Carbon Structures Designed for Energy and Sustainability Applications”, Energy and Environmental Science, 7(4), 1212-1249 (2014).

80. Yi Ke, Stephan Lany, Joseph J. Berry, John D. Perkins, Philip A. Parilla, Andriy Zakutayev, Tim Ohno, Ryan O’Hayre, David S. Ginley, “Enhanced Electron Mobility due to Dopant-Defect Pairing in Conductive ZnMgO”, Advanced Functional Materials, 24(19), 2875-2882 (2014).

79. *D. Clark, J. Tong, A. Morrissey, A. Almonsoori, I. Reimanis, and R. O’Hayre, “Anomalous low-temperature proton conductivity enhancement in a novel protonic nanocomposite”, Phys. Chem. Chem. Phys., 16 (11), 5076 – 5080, (2014)

78. *April R. Corpuz, Kevin N. Wood, Svitlana Pylypenko, Arrelaine Dameron, Prabhuram Joghee, Tim Olson, Guido Bender, Huyen Dinh, Thomas Gennett, Ryan Richards, Ryan O’Hayre, “Effect of Nitrogen Post-Doping on a Commercial Platinum-Ruthenium/Carbon Anode Catalyst”, J. Power Sources, 248, 296-306 (2014).

77. *P. Joghee, S. Pylypenko, K. Wood, A. Corpuz, G. Bender, H. Dinh, R. O’Hayre, “Improvement of DMFC performance by treating the anode at high anodic potential”, J. Power Sources, 245, 37-47 (2014).

76. *S. Nikodemski, J. Tong, R. O’Hayre, “Solid-state reactive sintering for proton conducting ceramics”, Solid State Ionics, 253, 201-210 (2013).

75. *S. Pylypenko, A. Borisevich, K. L. More, A. Corpuz, T. Holme, A. A. Dameron, T.S. Olson, H.N. Dinh, T. Gennett, and R. O’Hayre, “Nitrogen: Unraveling the secret to stable carbon-supported Pt-alloy electrocatalysts”, Energy and Environ. Sci. 6, 2957-2964 (2103).

74.* M. Chin, P. Periasamy, T. O’Regan, M. Amani, C. Tan, R. M. Osgood, R. P. O’Hayre, J. J. Berry, P. A. Parilla, D. S. Ginley, and M. Dubey “Planar Metal-Insulator-Metal Diodes based on the Nb/Nb2O5/X MaterialSystem”, J. Vac. Sci. and Tech. B. 31(5), 051204/1-8 (2013).

73.*M.D. Sanders, R. O’Hayre, H. Zhu, R.J. Kee, “Model-based characterization of charged-defect transport and apparent gas-phase permeation in mixed-conducting perovskite membranes”, Solid State Ionics, 249-250, 6-16 (2013).

72. *M. Shang, J. Tong, and R. O’Hayre, “A promising cathode for intermediate temperature protonic ceramic fuel cells: BaCo0.4Fe0.4Zr0.2O3-δ”, RSC Advances, 3, 15769-15775 (2013).

71.*Y. Zhao, Y. Zhou, R. O’Hayre, Z. Shao, “Electrocatalytic oxidation of methanol on Pt catalyst supported on nitrogen-doped graphene induced by hydrazine reduction”, J. Phys. Chem. Sol., 74 (11), 1608 – 1614 (2013)

70. *J.S. Fish, S. Ricote, T. Holgate, F. Lenrick, R. Wallenberg, R. O’Hayre, N. Bonanos, “Synthesis by Spark Plasma Sintering of a BaCe0.2Zr0.7Y0.1O3-/Sr0.95Ti0.9Nb0.1O3- (BCZY27/STN95) Composite Material for Hydrogen Separation Membranes”, J. Mater. Sci., 48, 6177-6185 (2013).

69. *A.H. McDaniel, E.C. Miller, D.Arifin, A. Ambrosini, E.N. Coker, R. O’Hayre, W.C. Chueh, and J. Tong, “Sr- and Mn-doped LaAlO3-δ for Solar Thermochemical H2 and CO Production”, Energy and Environmental Science, 6, 2424-2428, (2013).

68. *T. Olson, A. A. Dameron, K.N. Wood, S. Pylypenko, K. E. Hurst, S.T. Christensen, J. S. Bult, D. S. Ginley, R. O’Hayre, H.N. Dinh, T. Gennett, “Enhanced Fuel Cell Catalyst Durability with Nitrogen Modified Carbon Supports”, Journal of the Electrochemical Society, 160(4), F389-F394 (2013).

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67. *P. Periasamy, M.S. Bradley, P.A. Parilla, J.J. Berry, D.S. Ginley, R.P. O’Hayre and C.E. Packard, “Electromechanical tuning of nanoscale MIM diodes by nanoindentation”, J. Mater. Res., 28(14), 1912-1919 (2013)

66. *M. Shang, W. Wang, S. Sun, E. Gao, Z. Zhang, L. Zhang and R. O'Hayre, “The design and realization of a large-area flexible nanofiber-based mat for pollutant degradation: an application in photocatalysis”, Nanoscale, 5, 5036–5042 (2013)

65. *P. Periasamy, H.L. Guthrey, A.I. Abdulagatov, P.F. Ndione, J.J. Berry, D.S. Ginley, S.M. George, P.A. Parilla*, R.P. O’Hayre, “Metal-Insulator-Metal Diodes: Role of the Insulator Layer on the Rectification Performance”, Advanced Materials, 25(9), 1301-1308 (2013)

64. *Y. Zhao, Y. Zhou, B. Xiong, J. Wang, X. Chen, R. O’Hayre, Z. Shao, “Facile single-step preparation of Pt/N-graphene catalysts with improved methanol electrooxidation activity”, J. Solid State Electrochem., 17(4), 1089-1098 (2013)

63. *T. Tauer, R. O’Hayre, and W. Medlin, “Computational investigation of defect segregation at the (001) surface of BaCeO3 and BaZrO3: The role of metal-oxygen bond strength in controlling vacancy segregation”, J. Mater. Chem. A, 1(8), 2840-2846 (2013)

62. *J. Wang, Y. Zhou, Y. Hu, R. O’Hayre, and Z. Shao, “Facile synthesis of porous nanocrystalline TiO2 with high rate performance”, Journal of Materials Science, 48(6), 2733-2742 (2013).

61. B. Xiong, Y. Zhou, R. O’Hayre, Z. Shao, “Facile single-step ammonia heat-treatment and quenching process for the synthesis of improved Pt/N-graphene catalysts”, Applied Surface Science, 266, 433-439 (2013).

60. *R. Kee, H. Zhu, B. Hildenbrand, E. Vollestad, M. Sanders, and R. O'Hayre, “Modeling the steady-state and transient response of polarized and non-polarized proton-conducting doped-perovskite membranes”, J. Electrochem. Soc. 160 (3), F290-F300 (2013).

59. *B. Xiong, Y. Zhou, Y. Zhao, J. Wang, X, Chen, R. O’Hayre, and Z. Shao, “The use of nitrogen-doped graphene supporting Pt nanoparticles as a catalyst for methanol electrocatalytic oxidation”, Carbon, 52, 181-192 (2013).

58. *M. Shang, J. Tong, R. O’Hayre, “A novel wet-chemistry method for the synthesis of multicomponent nanoparticles: A case study of BaCe0.7Zr0.1Y0.1Yb0.1O3−δ”, Materials Letters, 92, 382 (2013)

57. *K. N. Wood, S. Pylypenko, T.S. Olson, A.A. Dameron, K. O’Neil, S.T. Christensen, H.N. Dinh, T. Gennett, and R. O’Hayre, “The Effect of Halide-Modified Model Carbon Supports on Catalyst Stability”, ACS Applied Materials and Interfaces, 4(12), 6727-6733 (2012).

56. *P. Joghee, S. Pylypenko, T.S. Olson, A. A. Dameron, A. R. Corpuz, H. N. Dinh, K. Wood, K. J. O'Neill, K. E. Hurst, G. Bender, T. Gennett, B. S. Pivovar, R. P. O'Hayre, “Enhanced Stability of PtRu Supported on N-Doped Carbon for the Anode of a DMFC”, Journal of The Electrochemical Society, 159 (11) F768-F778 (2012)

55. *B.J. Simonds, A. Subramaniyan, R. O'Hayre, and P.C. Taylor, “Conduction Electron Resonance used to Determine Size of Palladium Nanoparticles in Proton Conducting Ceramics”, J. Magnetic Resonance, 255, 58-61 (2012)

54. *J. Fish, C. Ping Li, J.D. Fehribach, C.A. Wolden, R. O’Hayre, A. L. Bunge, and C. E. Goodyer, “Poisson-Boltzmann Model of Space Charge Layer Effects on Conductivity in Randomly Distributed Nanoionic Composites”, Electrochimica Acta, 83, 454-463 (2012)

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53. *K. N. Wood, S.T. Christensen, T.S. Olson, A.A. Dameron, S. Pylypenko, K.E. Hurst, H.N. Dinh, T. Gennett, and R. O’Hayre, “In-Situ Small Angle X-ray Scattering Analysis of Improved Catalyst-Support Interactions through Nitrogen Modification”, MRS Communications, 2, 85-89 (2012)

52. *W. Lee, F. B. Prinz, X. Chen, S. Nonnenmann, D.A. Bonnell, and R.P. O’Hayre “Nanoscale impedance and complex properties in energy-related systems”, MRS Bulletin, 37(07), 659-667 (2012)

51. *A. R. Corpuz, T.S. Olson, P. Joghee, S. Pylypenko, A. A. Dameron, H. N. Dinh, K. J. O'Neill, K. E. Hurst, G. Bender, T. Gennett, B. S. Pivovar, R. M. Richards, R. P. O'Hayre, “Effect of a nitrogen-doped PtRu/carbon anode catalyst on the durability of a direct methanol fuel cell”, J. Power Sources, 217, 142 (2012)

50. *A. Deml, A. L. Bunge, M. A. Reznikov, A. Kolessov, and R. P. O'Hayre, “Progress towards a solid-state ionic field effect transistor”, J. Appl. Phys., 111, 075411 (2012)

49. *J. Tong, D. Clark, A. Subramaniyan, H. Guthrey, D. Clark, B.P. Gorman, R. O'Hayre, “Electrical conductivities of ionic composite based on proton-conducting ceramic of yttrium-doped barium zirconate and hydrogen-permeable metal of palladium”, Solid State Ionics, 211, 23-33 (2012)

48. *Y. Ke, J. Berry, P. Parilla, A. Zakutayev, R. O’Hayre, D. Ginley, “The origin of electrical property deterioration with increasing Mg concentration in ZnMgO:Ga”, Thin Solid Films, 520, 3697-3702 (2012)

47. *T. Tauer, R. O’Hayre, J. W. Medlin “A theoretical study of the influence of dopant concentration on hydration properties of yttrium-doped barium cerate”, Solid State Ionics, 204/205, 27-34 (2011)

46. *R. M. Pasquarelli, D.S. Ginley, and R. P. O’Hayre, “Solution Processing of Transparent Conductors: From Flask to Film”, Chem. Soc. Rev. 40 (11), 5406 – 5441, (2011). Invited Review

45. *C. E. Goodyer, J. Fish, J.D. Fehribach, R. O’Hayre, and A. L. Bunge “Modeling Space Charge Layer Interaction and Conductivity Enhancement in Nanionic Composites”, Electrochimica Acta, 56, 9295-9302 (2011)

44. *A.A. Dameron, T.S. Olson, S.T. Christensen, J.E. Leisch, K.E. Hurst, S. Pylypenko, J.S. Bult, D.S. Ginley, R. O’Hayre, H.N. Dinh, T. Gennett, “Compositional Control of Pt1-xRux Thin Films Sputtered from a Single Alloyed Target”, ACS Catalysis, 1, 1307-1315 (2011)

43. *P. Periasamy, J.J. Berry, A.A. Dameron, J.D. Bergeson, D.S. Ginley, R. P. O’Hayre, and P.A. Parilla, “Fabrication and characterization of MIM diodes based on Nb/Nb2O5 via a rapid screening technique”, Advanced Materials, 23(27), 3080-3085 (2011)

42. *A. Dhanda, H. Pitsch, and R. O'Hayre, “Diffusion Impedance Element Model for the Triple Phase Boundary”, Journal of Electrochemical Society, 158(8), B877-B884 (2011)

41. *S. Pylypenko, A.Queen, T. S. Olson, A. Dameron, K. O’Neill, K. Neyerlin, B. Pivovar, H. N. Dinh, D. S. Ginley, T. Gennett, and R. O’Hayre, “Tuning carbon-based fuel cell catalyst support structures via nitrogen functionalization. Part I: Investigation of structural and compositional modification of highly oriented pyrolytic graphite model catalyst supports as a function of nitrogen implantation dose”, J. Physical Chemistry C. 115(28), 13676-13684 (2011)

40. *S. Pylypenko, A.Queen, T. S. Olson, A. Dameron, K. O’Neill, K. Neyerlin, B. Pivovar, H. N. Dinh, D. S. Ginley, T. Gennett, and R. O’Hayre, “Tuning carbon-based fuel cell catalyst support structures via nitrogen functionalization. Part II: Investigation of durability of Pt-Ru nanoparticles supported on highly oriented pyrolytic graphite model catalyst supports as a function of nitrogen implantation dose”, J. Physical Chemistry C. 115(28), 13667-13675 (2011)

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39. *A. Subramaniyan, J. Tong, R. O’Hayre, N. M. Sammes, “Sintering Studies on 20 mol% Yttrium Doped Barium Cerate”, J. American Ceramics Society, 94(6), 1800-1804 (2011)

38. *M. Sanders and R. O’Hayre, “Coupled transport and uphill permeation of steam and oxygen in a proton-conducting ceramic membrane”, J. Membrane Sci., 376, 96-101 (2011)

37. *Jie Wang, Y. Zhou, Y. Hu, R. O’Hayre, and Z. Shao, “Facile Synthesis of Nanocrystalline TiO2 Mesoporous Microspheres for Lithium-ion Batteries”, J. Physical Chemistry C, 115 (5), 2529-2536 (2011).

36. *J. Tong, D. Clark, L. Bernau, R. O'Hayre, “Optimization of proton-conducting yttrium-doped barium cerate ceramics synthesized by a cost-effective solid-state reactive sintering method”, Solid State Ionics, 181, 1486-1498 (2010).

35. *Y. Zhou, K. Neyerlin, T. Olson, S. Pylypenko, J. Bult, H. Dinh, T. Gennett, Z. Shao, R. O’Hayre, “Enhancement of Pt and Pt-Alloy Fuel Cell Catalyst Activity and Durability via Nitrogen-Modified Carbon Supports”, invited review, Energy and Environmental Science, 3, 1437-1446 (2010).

34. *Y. Zhou, J. Wang, Y. Hu, R. O’Hayre, and Z. Shao, “Porous LiFePO4 and Carbon Nanotube Composites”, Chemical Communications, 46, 7151-7153 (2010).

33. *T. Holme, Y. Zhou, R. Pasquarelli, R. O’Hayre, “First principles study of doped carbon supports for enhanced platinum catalysts”, Phys. Chem. Chem. Phys, 12, 9461-9468 (2010).

32. *M. Sanders and R. O’Hayre, “Development of a Multi-Species Transport Space Theory and its Application to Permeation Behavior in Proton Conducting Doped Perovskites”, Journal of Materials Chemistry, 20, 6271-6281 (2010).

31. *J. Tong, D. Clark, L. Bernau, M. Sanders, R. O'Hayre, “Solid-State Reactive Sintering Mechanism for Large-Grained Yttrium-Doped Barium Zirconate with High Total Proton Conductivity”, Journal of Materials Chemistry, 20, 6333-6341 (2010).

30. *S. Pylypenko, A. Queen, K. Neyerlin, T. Olson, A. Dameron, K. O'Neill, D. Ginley, B. Gorman, S. Kocha, H. Dinh, T. Gennett, and R. O'Hayre, “The role of Nitrogen Doping on Durability in the Pt-Ru/HOPG System”, ECS Transactions, 33(1), 351-357, (2010)

29. *R. M. Pasquarelli1, M. F.A.M. van Hest, A. Miedaner, C. J. Curtis, R. O’Hayre, D. S. Ginley, “Solution Synthesis and Characterization of Indium, Zinc, and Indium-Zinc Formate Precursors for Transparent Conducting Oxides, Inorganic Chemistry, 49, 5424 (2010).

28. *J. Tong, D. Clark, M. Hoban, and R. O’Hayre, “Cost-Effective Solid-State Reactive Sintering Method for High Conductivity Proton Conducting Yttrium-Doped Barium Zirconium Ceramics”, Solid State Ionics, 181, 496-503 (2010)

27. *T. Fabian, R. O’Hayre, S. Litster, F. B. Prinz, J. G. Santiago, “Active Water Management at the Cathode of a Planar Air-breathing PEM Fuel Cell Using and Electroosmotic Pump”, Journal of Power Sources, 195(11), 3640-3644 (2010)

26. *T. Fabian, R. O’Hayre, S. Litster, F. B. Prinz, J. G. Santiago, “Passive Water Management at the Cathode of a Planar Air-breathing PEM Fuel Cell”, Journal of Power Sources, 195(10), 3201-3206 (2010)

25. *B. Babcock, A.J. Tupper, D. Clark, T. Fabian, R. O’Hayre, “Optimization of Air Breathing Fuel Cell Cathodes” Journal of Fuel Cell Technology, 7, 021017-1—021017-11 (2010)

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24. *Y. Zhou, R. Pasquarelli, T. Holme, J. Berry, T. Ohno, D. Ginley, R. O’Hayre, “Dopant-induced electronic structure modification of HOPG surfaces: implications for high activity fuel cell catalysts Journal of Physical Chemistry C, 114, 506-515 (2010)

23. *Y. Zhou, R. Pasquarelli, T. Holme, J. Berry, D. Ginley, R. O’Hayre, “Improving PEM Fuel Cell Catalyst Activity and Durability Using Nitrogen-Doped Carbon Supports”, Cover Feature—Journal of Materials Chemistry,16(42), 7830-7838, (2009)

22. *J. D. Fehribach and R. O’Hayre, “Triple Phase Boundaries in Solid Oxide Cathodes”, SIAM Journal on Applied Mathematics, 70(2), 510-530 (2009)

21. *J.M. Nekuda Malik, M.F.A.M. van Hest, A. Miedaner, C. Curtis, J. Leisch, P.A. Parilla, M. Kaufman, M.P. Taylor, B.J. Stanbery, R. O'Hayre, D. Ginley, “Atmospheric Pressure Synthesis of In2Se3, Cu2Se and CuInSe2 without External Selenization from Solution Precursors”, Journal of Materials Research, 24(4), 1375 (2009)

20. *A. J. Leenheer, J. D. Perkins, M.F.A.M. van Hest, J. J. Berry, R. P. O’Hayre, and D. S. Ginley “General mobility and carrier concentration relationship in transparent amorphous indium zinc oxide films”, Phys. Rev. B., 77, 115215 (2008)

19. *T. Fabian, R. O’Hayre, F. B. Prinz, J. G. Santiago, “Measurement of Temperature and Reaction Species in the Cathode Diffusion Layer of a Free-Convection Fuel Cell”, J. Electrochem. Soc. 154, B910 (2007)

-Selected for publication in the July 23, 2007 issue of Virtual Journal of Nanoscale Science & Technology

18. *R. O’Hayre, T. Fabian, S. Litster, F. B. Prinz, J. G. Santiago, “Engineering Model of a Passive Planar Air Breathing Fuel Cell Cathode”, Journal of Power Sources, 167(1), 118-129, (2007)

17. *R. O’Hayre, Marian Nanu, Joop Schoonman, Albert Goosens, “Mott-Schottky and Charge Transport Analysis of Nanoporous Titanium Dioxide Films in Air”, Journal of Physical Chemistry C., 111(12), 4809-4814 (2007)

16. R. O’Hayre, Marian Nanu, Joop Schoonman, and Albert Goosens, “A Parametric Study of TiO2/CuInS2 Nanocomposite Solar Cells: How Cell Thickness, Buffer Layer Thickness, and TiO2 Particle Size Affect Performance”, Nanotechnology, 18 (5), (2007)

15. S. W. Cha, R. O’Hayre, Y.I Park, F. B. Prinz, “Electrochemical Impedance Investigation of Flooding in Micro Flow Channels for Proton Exchange Membrane Fuel Cells”, Journal of Power Sources, 161, 138-142, (2006)

14. T. Fabian, J. D. Posner, R. O’Hayre, S. W. Cha, J. K. Eaton, F. B. Prinz, J. G. Santiago, “The Role of Ambient Conditions on the Performance of a Planar, Air Breathing Hydrogen PEM Fuel Cell”, Journal of Power Sources, 161, 168-182, (2006)

13. R. O’Hayre, Marian Nanu, Joop Schoonman, Albert Goosens, Qing Wang, Michael Grätzel, “The Influence of TiO2 Particle Size in TiO2/CuInS2 Nanocomposite Solar Cells”, Advanced Functional Materials, 16, 1566-1576, (2006)-Selected as one of the top 20 “hottest” papers in Adv. Funct. Mater. 2006-2007

12. R. O’Hayre, D.M. Barnett, F.B. Prinz, “The Triple Phase Boundary: A Mathematical Model and Experimental Investigations for Fuel Cells”, Journal of the Electrochemical Society, 152 (2), A439-A444, (2005)

11. R. O’Hayre, G, Feng, W.D. Nix, F.B. Prinz, “Quantitative Impedance Measurement Using Atomic Force Microscopy”, Journal of Applied Physics, 96 (6), 3540, (2004)

-Selected for publication in a 20047 issue of Virtual Journal of Nanoscale Science & Technology. Profiled by the MIT Technology Review in January, 2005.

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10. R. O’Hayre, M. Lee, F.B. Prinz, “Ionic and Electronic Impedance Imaging Using Atomic Force Microscopy”, Journal of Applied Physics, 95 (12), 8382, (2004)-Profiled by Molecular Instruments Inc. in a research and applications note in 2005

9. R. O’Hayre, F.B. Prinz, “The Air/Platinum/Nafion Triple Phase Boundary: Characteristics, Scaling, and Implications for Fuel Cells”, Journal of the Electrochemical Society, 151 (5), A756, (2004)

8. M. Lee, R. O’Hayre, T.M. Gur, F.B. Prinz, “Electrochemical Nanopatterning of Ag on Solid-State Ionic Conductor RbAg4I5 Using Atomic Force Microscopy”, Applied Physics Letters, 85 (16), 3552, (2004)

7. S.W. Cha, R. O’Hayre, S. J. Lee, Y. Saito, F. B. Prinz, “The scaling behavior of flow patterns: a model investigation”, Journal of Power Sources, 134 (1), 57, (2004)

6. S.W. Cha, S.J. Lee, R. O’Hayre, Y. Saito, F.B. Prinz, “Geometric Scale Effect of Flow Channels on Performance of Fuel Cells”, Journal of the Electrochemical Society, 151 (11), A1856, (2004)

5. S.W. Cha, R. O’Hayre, F.B. Prinz, “The Influence of Size Scale on the Performance of Fuel Cells” , Solid State Ionics, 175, 789, (2004)

4. R. O’Hayre, D. Braithwaite, W. Herman, S.J. Lee, T. Fabian, S.W. Cha, Y. Saito, F.B. Prinz “Development of Portable Fuel Cell Arrays with Printed-circuit Technology”, Journal of Power Sources, 124, 459, (2003)

3. R. O’Hayre, T. Fabian, S.J. Lee, F.B. Prinz, “Lateral Ionic Conduction in Planar Array Fuel Cells”, Journal of the Electrochemical Society, 150, A430, (2003).

2. R. O’Hayre, S.J. Lee, S.W. Cha, F.B. Prinz, “A Sharp Peak in the Performance of Sputtered Platinum Fuel Cells at Ultra-Low Platinum Loading”, Journal of Power Sources, 109, 483 (2002).

1. S.J. Lee, A. Chang-Chien, S.W. Cha, R. O’Hayre, Y.I. Park, Y. Saito, F.B. Prinz “Design and Fabrication of a Micro Fuel Cell Array with ‘Flip-Flop’ Interconnection”, Journal of Power Sources, 111, 410 (2002).

Invited Talks: 82. *A.M. McDaniel, D. Barcellos-Romeros, M.D. Sanders, J.D. Sugar, R. O’Hayre, “Hydrogen production by solar thermochemical water splitting: searching for optimal nonstoichiometric perovskite oxides”, Invited presentation, 255th American Chemical Society National Meeting, New Orleans, LA, March 18-22nd, 2018.

81. *R. O’Hayre, “Materials for Electrochemical Energy Conversion”, Invited Seminar, Institute for Condensed Matter Chemistry-- Bordeaux (ICMCB), Bordeaux, France, October 19 th, 2017.

80. *Ryan O’Hayre, Chuancheng Duan, Robert Braun, Sandrine Ricote, Long Le, Hanping Ding, Neal Sullivan, Robert Kee, Huayang Zhu, “Scale-up Fabrication and Long-Term Performance Testing of Fuel-Flexible Protonic Ceramic Fuel Cells”, Invited Plenary, Prospects on Protonic Ceramic Cells—4 th International Workshop (PPCC-2017), Bordeaux, France. October 14-20th, 2017.

79. *Ryan O’Hayre, Meagan Papac, Chuancheng Duan, Ann Deml, Andriy Zakatuyev, and Vladan Stevanovic, “Triple Conducting Oxides for Electrochemical Applications”, Invited Talk, MS&T Annual Meeting, Pittsburgh, PA, October 8-12th 2017.

78. *Ryan O’Hayre, Meagan Papac, Debora Barcellos-Romeros, Chuancheng Duan, Michael Sanders, Ann Deml, Andriy Zakatuyev, Vladan Stevanovic, Bob Kee, and Anthony McDaniel, “Protonic-Ceramic Electrochemical Devices and Solar Thermochemical Hydrogen Production: Opportunities for Beamline Science, Invited Talk, ALS Annual Users Meeting—Hydrogen Workshop, Lawrence Berkeley National Laboratory, Berkeley, CA. October 3-4th 2017.

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77. *Ryan O’Hayre, “Fuel Cell Technology”, Invited Lecture, International Summer School on Materials for Energy and Sustainability (ISMESVI), California Institute of Technology, Pasadena, CA. July 16-23 rd 2017.

76. *Ryan O’Hayre, “Fuel-Flexible Protonic Ceramic Fuel Cells”, Invited Talk, MEMORIES 50 Workshop, University of California Los Angeles, Los Angeles, CA. July 14-16 th 2017.

75. *Ryan O’Hayre, Jianhua Tong, Chuancheng Duan, Stefan Nikodemski, Joe Berry, Phil Parilla, David Ginley, Robert Braun, Sandrine Ricote, Long Le, Hanping Ding, Neal Sullivan, “Fuel-Flexible Protonic-Ceramic Fuel Cells and Protonic Nanoionic Effects in BCZY/STO Heterostructures”, Invited Talk, 3 rd Functional Oxide Thin Films for Advanced Energy and Information Technology Conference, Rome, Italy, July 4-9 th 2017.

74. *Ryan O’Hayre, Daniel Clark, Chuancheng Duan, Sandrine Ricote, David Dierks, Brian Gorman, Huayang Zhu, Robert Kee, “Grain Boundaries and Interfaces in Ni-doped Proton Conducting Oxide Electrolytes and in Ni-based Cermet Anodes”, Invited Talk, 21st International Conference on Solid State Ionics (SSI-21), Padova, Italy, June 18th-23rd, 2017.

73. *N. Sullivan, L. Le, H. Ding, C. Duan, R. O’Hayre, “Proton Conducting Ceramics for Electricity Generation, Electrolysis, and Fuels”, FiMPART 2017, Bordeaux, France, July 9-12 th, 2017.

72. *R. O’Hayre, S. Nikodemski, J. Tong, P. Parila, J. Berry, D. Ginley, “Ionic conduction modification in nanoscale proton-conducting oxide heterostructures prepared by pulsed laser deposition”, Invited Talk, International Symposium on Defects and Transport, MS&T 2016, Salt Lake City, UT., October 2016.

71. *Ryan O’Hayre, Jianhua Tong, Chuancheng Duan, Stefan Nikodemski, Joe Berry, Phil Parilla, David Ginley, Robert Braun, Sandrine Ricote, Long Le, Hanping Ding, Neal Sullivan, “Fuel-Flexible Protonic-Ceramic Fuel Cells and Protonic Nanoionic Effects in BCZY/STO Heterostructures”, Keynote Presentation, 18 th International Conference on Solid State Proton Conductors, Oslo, Norway Sept 18 th-23rd, 2016.

70. *A. McDaniel, D. Barcellos, M. Sanders, J. Tong, R. O’Hayre, N. Ahlborg, C.B. Gopal, W. Chueh, A. Emery, C. Wolverton, J. Miller, “Solar Thermochemical Water Splitting: Advances in Materials and Methods”, Invited Talk, 6th ECI Conference on Nonstochiometric Compounds, Santa Fe, New Mexico, USA, Sept 5 th-9th, 2016.

69. *R. O’Hayre, “Fuel Cells for energy conversion”, Invited Lecture, 2016 Erice Summer Conference on Materials for Renewable Energy and Sustainability, Erice, Italy, July 12-19 th, 2016.

68. *R. O’Hayre, “Materials for Solar Thermochemical Hydrogen Production: Can We Beat Ceria?”, Presentation to the Board of The Edward Orton Junior Foundation, Columbus, Ohio. June 17 th, 2016.

67. *R. O’Hayre, “Materials for Electrochemical Energy Conversion”, Materials Science and Engineering Departmental Seminar, The Ohio State University, Columbus, Ohio. June 16 th, 2016.

66. *A. Deml, A. Holder, V. Stevanovic, and R. O’Hayre, “Incorporating Finite Temperature Effects into Materials by Design: Complex Functional Oxides”, Invited Talk, 2nd International Conference on Functional Oxide Thin Films for Advanced Energy and Information Technology, Cancun, Mexico, March 5 th-8th, 2016.

65. *R. O’Hayre, D. Clark, M. Shang, D. Diercks, B. Gorman, S. Ricote, and J. Tong, “Atom-probe measurement and modeling of BaZrO3 grain boundaries”, Invited Presentation, Solid State Electrochemistry Workshop 2015, Ulm, Germany, September 8th, 2015.

64. *R. O’Hayre, “Fuel Cells for Energy Conversion”, Invited Lecture, Pusan National University, Pusan, South Korea, August 14th, 2015.

63. *R. O’Hayre, C. Duan, M. Shang, S. Ricote, and J. Tong, “Easy-to-make, high-performance proton-conducting ceramic fuel cells”, Invited Presentation, IUPAC 2015, Pusan, South Korea, August 13th, 2015.

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62. *R. O’Hayre, C. Duan, M. Sanders, D. Clark, M. Shang, D. Diercks, B. Gorman, S. Ricote, and J. Tong, “Materials for Electrochemical Energy Conversion”, Invited Seminar, Korea Institute of Materials Science, South Korea, August 10th, 2015.

61. *R. O’Hayre, C. Duan, M. Sanders, D. Clark, M. Shang, D. Diercks, B. Gorman, S. Ricote, and J. Tong, “Materials for Electrochemical Energy Conversion”, Invited Seminar, Korea Tech, South Korea, August 6th, 2015.

59. *R. O’Hayre, “Fuel Cells for Energy Conversion”, Invited Lecture, Korea Tech, South Korea, August 6th, 2015.

58. *R. O’Hayre, “Fuel Cells for energy conversion”, Invited Lecture, 2015 International School on Materials For Energy and Sustainability, Golden, CO. July 12-19th, 2015.

57. *R. O’Hayre, “Triple-conducting cathodes for proton-conducting ceramic fuel cells”, Invited Presentation, International Workshop on Proton Conducting Ceramics, Oslo, Norway, March 24-27 th, 2015.

56. *R. O’Hayre, “Materials for Electrochemical Energy Conversion”, Invited Presentation, University-Industry Electrochemistry Workshop, DeNora Inc., Concord, Ohio, November 11-12 th, 2014.

55. *R. O’Hayre, D. Clark, M. Shang, D. Diercks, B. Gorman, S. Ricote, and J. Tong, “High Performance Proton Conducting Ceramic Fuel Cells and the Application of Atom Probe Tomography to Direct Grain Boundary Characterization”, Invited Presentation, Solid-State Proton Conductors 17, Seoul, South Korea, September 15-19th, 2014.

54. *R. O’Hayre, “Batteries for Energy Storage”, Invited Lecture, 2014 Erice Summer Conference on Renewable Energy Materials, Erice, Italy, July 12-19th, 2014.

53. *R. O’Hayre, “Fuel Cells for energy conversion”, Invited Lecture, 2014 Erice Summer Conference on Renewable Energy Materials, Erice, Italy, July 12-19th, 2014.

52. A. M. Deml, V. Stevanovic, R. O’Hayre and C. B. Musgrave, “First principles insights into redox processes in oxides: An investigation of oxygen vacancy formation energetics”, Invited Presentation, 2014 Electrochemistry Workshop, Monterey Bay, CA, 8 July 2014. 

51. *R. O’Hayre, “A Fuel Cell Future?”, Invited Presentation, American Physical Society (APS) Annual Meeting, Denver, CO, March 2nd, 2014.

50. *R. O’Hayre, “Current Research in the Advanced Energy Materials Laboratory”, Invited Seminar, University Polytechnica of Valencia, Valencia, Spain, October 28th, 2013.

49. *R. O’Hayre, “Materials for Electrochemical Energy Conversion”, Invited Seminar, University of Wyoming, Sept 20th, 2013.

48. *R. O’Hayre, “Materials for Electrochemical Energy Conversion”, Invited Keynote, Multiscale Energy Global Frontier Workshop 2013, Seoul National University, Seoul, South Korea, August 18-20 th, 2013.

47. *R. O’Hayre, J.S. Fish, C.P. Li, J. D. Fehribach, C.A. Wolden, A.L. Bunge, and C.E. Goodyer, “Poisson-Boltzmann Model of Space Charge Layer Effects on Conductivity in Randomly Distributed Nanoionic Composites”, Invited Presentation, International Workshop on Solid State Electrochemistry for Energy Conversion and Storage, Heidelberg, Germany, July 22-24th, 2013.

46. *R. O’Hayre, “Current Research in the Advanced Energy Materials Laboratory”, Invited Seminar, University of Tokyo, Tokyo, Japan, June 14th, 2013.

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45. *R. O’Hayre, “Materials for Electrochemical Energy Conversion”, Invited Seminar, Advanced Institute for Scientific Research (AIST), Tsukuba, Japan, June 13th, 2013.

44. *R. O’Hayre, “Current Research in the Advanced Energy Materials Laboratory”, Invited Seminar, National Institute for Materials (NIMS), Tsukuba, Japan, June 12th, 2013.

43. *R. O’Hayre, “Current Research in the Advanced Energy Materials Laboratory”, Invited Seminar, Kyushu University, Kyushu, Japan, June 10th, 2013.

42. *R. O’Hayre, “AFM Impedance Imaging and Triple-Phase Boundary Kinetic Scaling for Pt/Nafion Fuel Cells”, Young Scientist Award Finalist Seminar, 19th International Conference on Solid-State Ionics, Kyoto, Japan, June 5th, 2013.

41. *R. O’Hayre, “Materials for Electrochemical Energy Conversion”, Invited Seminar, Shanghai Jiaotong, Shanghai, China, May 6th, 2013.

40. *R. O’Hayre, “Materials for Electrochemical Energy Conversion”, Invited Seminar, Zhejiang University, Hangzhou, China, April 29th, 2013.

39. *R. O’Hayre, “Nitrogen-doped Carbon Supports for Enhanced Methanol Electrocatalysis”, Invited Seminar, Wuhan University of Science and Technology, Wuhan, China, April 25 th, 2013.

38. *R. O’Hayre, “Materials for electrochemical energy conversion”, Invited Seminar, Chulalongkorn University, Bangkok Thailand, March 18th, 2013.

37. *R. O’Hayre, “Fuel Cells for energy conversion”, Invited Lecture, 2012 Joint US-Africa Materials Institute for Sustainable Energy, Addis Ababa, Ethiopia, December 10-21st, 2012.

36. *R. O’Hayre, “Fuel Cells for energy conversion”, Invited Lecture, Hanyang University, Seoul, South Korea, December 7th, 2012.

35. R. O’Hayre, S. Pylypenko, K. Wood, Y. Zhou, A. Corpuz, R. Richards, T. Holme, T. Olson, A. Dameron, K. O’Neil, K. Hurst, D. Ginley, T. Gennett, H. N. Dinh, “Nitrogen-doped Carbon Supports for Enhanced Catalysis in Direct Methanol Fuel Cells”, Plenary Lecture, Workshop on Fuel Cells and Hydrogen Technologies, Korea Advanced Institute of Science and Technology, South Korea, December 6 th, 2012.

34. *R. O’Hayre, H. Zhu, R. Kee, M. Sanders, “Parameterized Exploration of Mutli-Species Transport Permeation in BZY20 Using Numerical Modeling”, Invited Keynote, International Symposium on Defects, Transport and Related Phenomena, 2012 Materials Science and Technology Conference, Pittsburg, PA. October 8-12 th, 2012.

33. *R. O’Hayre, “Batteries for Energy Storage”, Invited Lecture, 2012 Erice Summer Conference on Renewable Energy Materials, Erice, Italy, July 17-28th, 2012.

32. *R. O’Hayre, “Fuel Cells for energy conversion”, Invited Lecture, 2012 Erice Summer Conference on Renewable Energy Materials, Erice, Italy, July 17-28th, 2012.

31. *R. O’Hayre, H. Zhu, R. Kee, M. Sanders, “Exploration of Mutli-Species Transport Permeation in BZY20 Using Numerical Modeling”, Invited Talk, International Workshop on Solid State Electrochemistry for Energy Conversion and Storage, Heidelberg, Germany, July 16-18th, 2012.

30. *R. O’Hayre, “Materials for Electrochemical Energy Conversion”, Invited Keynote, International Conference for Young Researchers in Advanced Materials, Singapore, July 1-6, 2012.

29. *R. O’Hayre, D. Clark, S. Nikodemski, J. Tong, “Cost effective manufacturing of proton conducting perovskite ceramics for energy applications via solid state reaction sintering”, Invited Talk, Proton Conducting Ceramics Workshop, University of Oslo, Oslo, Norway, December 19 th, 2011.

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28. *R. O’Hayre, “Materials for Electrochemical Energy Conversion”, Invited Seminar, Petroleum Institute, Abu Dhabi, United Arab Emirates, December 12th, 2011.

27. *J. Tong, M. Sanders, D. Clark, A. Subramanian, S. Nikodemski, R. O’Hayre, “Proton Conducting Ceramics for Energy Conversion”, Invited Keynote Lecture, 2011 European Fuel Cell Conference, Rome, Italy, December 2011.

26. *R. O’Hayre, “Electrochemistry for energy conversion: Nanoionics, gas permeation membranes, and support-dopant enhancement of electrocatalysis”, Invited Seminar, Georgia Institute of Technology Department of Materials Science and Engineering, Atlanta, Georgia, December 5 th, 2011.

25. *R. O’Hayre, “Multi-species Transport and Permeation in Perovskite Ceramics”, Invited Keynote, Protonic-Ceramic Fuel Cell Workshop, Korea Institute of Science and Technology (KIST), Seoul, South Korea, Oct 27th, 2011.

24. *R. O’Hayre, “Materials for Electrochemical Energy Conversion”, Invited Seminar, Dalian Institute of Chemical Physics, Dalian, China, Oct. 25th, 2011.

23. *R. O’Hayre, “Materials for Electrochemical Energy Conversion”, Invited Seminar, Shanghai Institute of Fine Ceramics, Shanghai, China, Oct. 14th, 2011.

22. *R. O’Hayre, “Materials for Electrochemical Energy Conversion”, Invited Seminar, Nanjing University of Science and Technology, Nanjing, China, Oct. 12th, 2011.

21. *R. O’Hayre, S. Pylypenko, K. Wood, Y. Zhou, A. Corpuz, R. Richards, T. Holme, K. Neyerlin, T. Olson, A. Dameron, K. O’Neill, K. Hurst, D. Ginley, T. Gennett, and H. Dinh, “Nitrogen-doped Carbon Supports for Enhanced Catalysis in Direct Methanol Fuel Cells”, Low Carbon Energy Summit, Dalian, China, Oct 21 st, 2011.

20. *R. O’Hayre, S. Pylypenko, K. Wood, Y. Zhou, A. Corpuz, R. Richards, T. Holme, K. Neyerlin, T. Olson, A. Dameron, K. O’Neill, K. Hurst, D. Ginley, T. Gennett, and H. Dinh, “Nano-scale Modification of High Surface Area Carbon Supports via Chemical Doping to Enhance Catalysis in Direct Methanol Fuel Cells” Nano Science and Technology Conference, Dalian, China, Oct 24 th, 2011.

19. *R. O’Hayre, D. Clark, S. Nikodemski, J. Tong, “Cost effective and green manufacturing of proton conducting perovskite ceramics for energy applications via solid state reaction sintering”, Invited Talk, International Symposium on Green Manufacturing and Applications, Seoul, South Korea, October 6-7 th, 2011.

18. *R. O’Hayre, M. Sanders, J. Tong, H. Zhu, and R. Kee, “Permeative Gas Transport in Proton Conducting Ceramics”, Workshop on Proton Conducting Ceramics, University of Oslo, Oslo, Norway, May 16th, 2011.

17. *R. O’Hayre, M. Sanders, J. Tong, H. Zhu, and R. Kee, “Permeative Gas Transport in Proton Conducting Ceramics”, Invited Talk, Materials Research Society 2011 Spring Meeting, San Francisco, CA, April 25-29, 2011.

16. *R. O’Hayre, S. Pylypenko, Y. Zhou, A. Corpuz, R. Richards, T. Holme, K. Neyerlin, T. Olson, A. Dameron, K. O’Neill, K. Hurst, D. Ginley, T. Gennett, and H. N. Dinh, “Catalyst/Support Interactions: How Surface Modification of Carbon Supports can be Exploited to Enhance Fuel Cell Catalyst Activity”, Invited Talk, Materials Research Society 2011 Spring Meeting, San Francisco, CA, April 25-29, 2011.

15. *R. O’Hayre, “Electrochemistry for Energy Conversion”, Invited Seminar, Brigham Young University Department of Physics, Provo, Utah, February 9th, 2011.

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14. *R. O'Hayre, A. Deml, J. Tong, S. Pylypenko, A. Subramaniyan, M. Sanders, J. Fish, and A. Bunge, "Electrochemistry for Energy Conversion", Invited Keynote Lecture, Four Corners Regional Meeting of the American Physical Society, Ogden, Utah, Oct 15th-16th, 2010.

13. * R. O’Hayre, M. Sanders, J. Tong, H. Zhu and R.J. Kee, “Uphill gas permeation due to coupled transport in a mixed proton, oxygen vacancy, and hole conducting perovskite membrane”, Invited Lecture, 15th International Solid State Proton Conductors Conference, Santa Barbara, CA, August 15-19 th, 2010.

12. *R. O’Hayre, “Fuel Cells for energy conversion”, Invited Lecture, 2010 Erice Summer Conference on Renewable Energy Materials, Erice, Italy, May 28-June 5 th, 2010.

11. *R. O’Hayre, “Electrochemistry for energy conversion: Nanoionics, co-ionic diffusion, and support-dopant enhancement of electrocatalysis”, Keynote Session Invited Lecture (with Nate Lewis, Cal-Tech), 2010 Gordon Research Conference on Electrochemistry, Ventura, CA. January 10-15 th, 2010.

10. *R. O’Hayre, M. Sanders, S. Elangovan, G. Coors, "High-temperature steam permeation via ambipolar diffusion in perovskite proton conductors", Invited Keynote, International Symposium on Defects, Transport and Related Phenomena, 2009 Materials Science and Technology Conference, Pittsburg, PA. October 28 th, 2009.

9. *R. O’Hayre, “Fuel Cells for Energy Conversion”, Invited Keynote, XVIII International Materials Research Congress, Cancun, Mexico. August 18th, 2009.

8. *R. O’Hayre, Y. Zhou, R. Pasquarelli, M. Sanders, G. Coors, T. Holme, J. Berry, and D. Ginley, “Novel Materials for Fuel Cell and Fuel Reforming Applications”, Invited Keynote, Spring Meeting of the Materials Research Society, San Francisco, CA. April 15th, 2009.

7. *R. O'Hayre, Yingke Zhou, Robert Pasquarelli, Joe Berry, and David Ginley, “Doped-Carbon Supports for Enhanced Catalysis", Invited Keynote, MRS International Materials Research Conference, Chongqing, China, June 9th, 2008.

6. *R. O'Hayre, "Advanced Materials for Energy Conversion" Invited Research Seminar, Stanford University, Dept. of Mechanical Engineering, April 7th, 2008.

5. *R. O'Hayre, T. Fabian, S. Litster, F. Prinz, J. Santiago, "Passive Air Breathing Fuel Cells For Portable Applications: What are the Limits to Cathode Performance?" ASM International Regional Chapter Meeting, Golden, CO. Jan 9th, 2007.

4. R. O’Hayre and F.B. Prinz, “Miniature Fuel Cells and Micro-Electrochemistry”, Prof. S. Bent Research Group, Stanford, CA, Sept. 3rd, 2003.

3. R. O’Hayre, M. Lee, F. B. Prinz, “Nano-Scale Electrochemistry”, Max Plank Institute for Solid State Research, Stuttgart, Germany, May 5th, 2003.

2. S. W. Cha, R. O’Hayre, F. B. Prinz, “Scaling Effect in Micro Fuel Cell”, Invited keynote paper in “Materials for Energy Conversion and the Environment”, 14th International Conference on Solid State Ionics, Monterey, CA, June, 2003.

1. R. O’Hayre and F.B. Prinz, “Miniature Fuel Cell Systems”, Colorado School of Mines Colloquium. Colorado School of Mines, Golden, CO, Sept. 19th, 2002.

Presented at Conference:

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144. J. Beach, J. Kintner, A. Welch, J. Ganley and R. O'Hayre, “Fast-Ramping Reactor for CO2-Free NH3 Synthesis”, 2017 AIChE Annual Meeting, Minneapolis, MN. Oct 29 th-Nov 3rd, 2017.

143. C. Duan, N. P. Sullivan, R. J. Braun, R. J. Kee, H. Zhu, and R. O'Hayre, “High performance, fuel-flexible protonic ceramic fuel cells via in-situ exsolution of Ni nanoparticles”, MS&T 2017 Annual Meeting, Pittsburgh, PA. October 8-12th, 2017.

142. C. Duan, N. P. Sullivan, R. J. Braun, R. J. Kee, H. Ding, L. Q. Le, A. Dubois, and R. O'Hayre, “Reversible Protonic Ceramic Electrochemical Cells for Power Generation and Green Fuel Production”, SOFC-XV: 15th International Symposium on Solid Oxide Fuel Cells, Hollywood, FL, July 23-28 th, 2017.

141. C. Bernuy-Lopez, L. Rioja-Monllor, S.L. Jørgensen, T. Nakamura, S. Ricote, R. O’Hayre, K. Amezawa, M.A. Einarsrud, T. Grande, “Effect of cation ordering on the chemical stability and triple conductivity (O2-, e- and H+) in layered double perovskite LnBaCo2O5+δ (Ln = La and Y) cathodes”, 21st International Conference on Solid State Ionics (SSI-21), Padova, Italy, June 18th-23rd, 2017.

140. L. Rioja-Monllora, S. Ricote, C. Bernuy-Lopez, M.L. Fontaine, T. Grande, R. O’Hayre and M.A. Einarsrud,“Novel Processing of Composite Cathodes for Protonic Ceramic Fuel Cells”, 21st International Conference on Solid State Ionics (SSI-21), Padova, Italy, June 18th-23rd, 2017.

139. L. Garten, S. Dwaraknath, R. Whitehead, P. Selvarasu, D. R. Barcellos de Oliveira, Z. Chan, C. Duan, K. Stone, K. A. Persson, R. O'Hayre, D. Nocera, and D. Ginley (NREL), “Design and Realization of New Thermochemically Active Materials” 231st ECS Meeting, New Orleans, LA. May 28th-June 2nd, 2017.

138. M.J. Dzara, C. Ngo, J. Christ, P. Joghee, C. Cadigan, T. Batson, R. Richards, S. Pylypenko, R. O'Hayre, “Optimizing the Surface of Perovskite Oxides/Carbon Composites as Catalysts for the Oxygen Reduction Reaction in Alkaline Media”, AVS 63rd International Symposium, Nashville, TN. Nov 6-11th, 2016.

137. N. P. Sullivan, S. Ricote, H. Ding, W. Rosensteel, L. Le, C. Duan, and R. O'Hayre, “Proton-Conducting Ceramics for Fuels Synthesis”, PRIME, Honolulu, Hawaii, October 2016.

136. A. B. Dubois, K. J. Albrecht, C. Duan, N. Sullivan, R. P. O'Hayre and R. J. Braun, “Performance and Cost Expectations of kW-scale Power Systems based on Intermediate-Temperature Protonic Ceramic Fuel Cell Technology”, 18th International Conference on Solid State Proton Conductors, Oslo, Norway, Sept 18-23 2016.

135. L. Rioja-Monllor, C. Bernuy-Lopez, M.L. Fontaine, T. Grande, R. O'Hayre and M.A. Einarsrud, “Novel Processing of Composite Cathodes for Proton Ceramic Fuel Cells by Exsolution”, 18 th International Conference on Solid State Proton Conductors, Oslo, Norway, Sept 18-23 2016.

134. H. Ding, L. Le, C. Duan, S. Ricote, R. O'Hayre and N. Sullivan, “Protonic Ceramic Fuel Cell Stacks”, 18 th International Conference on Solid State Proton Conductors, Oslo, Norway, Sept 18-23 2016.

133. A. B. Dubois, K. J. Albrecht, C. Duan, J. Tong, R. P. O'Hayre and R. J. Braun, “Cost and System Modeling of an Intermediate-Temperature Protonic Ceramic Fuel Cell”, 18 th International Conference on Solid State Proton Conductors, Oslo, Norway, Sept 18-23 2016.

132. R. Osgood, R. O’Hayre et. al, MIM Nanorectennas, SPIE 2106.

131. D.R. Barcellos, M. Sanders, J. Tong, R. O’Hayre, A. McDaniel, “Promising Cerum-doped Barium Manganate Perovskite for Solar Thermochemical Hydrogen Production”, 6 th ECI Conference on Nonstochiometric Compounds, Santa Fe, New Mexico, USA, Sept 5 th-9th, 2016.

130. A. Deml, A. Holder, V. Stevanovic, and R. O’Hayre, “Incorporating Finite Temperature Effects into Materials by Design: Complex Functional Oxides”, 6th ECI Conference on Nonstochiometric Compounds, Santa Fe, New Mexico, USA, Sept 5th-9th, 2016.

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129.  H. Ding, C. Duan, J. Tong, L. Le, S. Ricote, R. O'Hayre, and N. P. Sullivan, “Protonic Ceramic Fuel Cell Stacks”, Electrochemical Society 2016 Spring Meeting, San Diego, CA., May 29-June 3 rd, 2016.

128. A. Deml, A. Holder, C. Musgrave, V. Stevanovic, and R. O’Hayre, “Rapid Prediction of Oxygen Vacancy Formation Energetics in Metal Oxides”, Materials Research Society 2015 Fall Meeting, Boston, Mass., November 30- December 4th, 2015. 

127. S. Pylypenko, J. Christ, T. Batson, C. Cadigan, J. Tong, R. O'Hayre, “High surface area perovskite oxides oxide-based oxygen reduction reaction electrocatalysts”, 228 th Meeting of the Electrochemical Society, Phoenix, Az., Oct. 11-16th, 2015.

126. C. Duan, J. Tong, M. Shang and Ryan O’Hayre, “A Cost-Effective Approach for Next Generation High-Performance Fuel-Flexible Protonic Ceramic Fuel Cell”, 20 th International Conference for Solid State Ionics, Keystone, CO. June 14-19th, 2015.

125. D. Barcellos, J. Tong, M. Sanders, A. McDaniel, R. O'Hayre, “Investigation on Nonstoichiometric Perovskite Oxides of Sr1-xLaxMn1-yAlyO3-δ for Solar Thermochemical Hydrogen Production”, 20 th International Conference for Solid State Ionics, Keystone, CO. June 14-19 th, 2015.

124. L. Imponenti, R. Kharait, M. Sanders, J. Tong, R. O’Hayre, and G. Jackson J. S., “Perovskites from Earth-Abundant Elements for Thermochemical Energy Storage”, 20 th International Conference for Solid State Ionics, Keystone, CO. June 14-19th, 2015.

123. D. Diercks, J. Tong, H. Zhu, R. Kee, J. Nino, R. O’Hayre, and B. Gorman, “Three-Dimensional Quantification of Composition and Space Charge Potential at Doped Ceria Grain Boundaries using Atom Probe Tomography”, 20th International Conference for Solid State Ionics, Keystone, CO. June 14-19 th, 2015.

122. T. Park, C. Duan, J. Tong, S.W. Cha, R. O’Hayre, “Fabrication of Co/Fe-Added Doped NiO-/BaZr0.8Y0.2O3-δ Anode for Methane-fueled PCFCs”, 20th International Conference for Solid State Ionics, Keystone, CO. June 14-19th, 2015.

121. C. Duan, J. Tong, M. Shang, R. O’Hayre “A Cost-Effective Approach for Next Generation High-Performance Fuel Fuel-Flexible Protonic Ceramic Fuel Cells”, 20 th International Conference for Solid State Ionics, Keystone, CO. June 14-19th, 2015.

120. S. Nikodemski, D. Clark, J. Tong, J. Berry, D. Ginley, P. Parilla, R. O’Hayre, “Ionic conductivity modification in nanoscale proton-conducting oxide heterostructures prepared by pulsed laser deposition”, 20 th International Conference for Solid State Ionics, Keystone, CO. June 14-19 th, 2015.

119. D. Clark, D. Diercks, H. Zhu, R. Kee, S. Ricote, B. Gorman, and R. O’Hayre, “Understanding blocking grain boundaries within proton conducting ceramics using atom probe tomography”, 20 th International Conference for Solid State Ionics, Keystone, CO. June 14-19th, 2015.

118. J. S. Fish, S. Ricote, R. O’Hayre, N. Bonanos, “Investigation of Ceramic Composite Membranes for Hydrogen Gas Separation”, 20th International Conference for Solid State Ionics, Keystone, CO. June 14-19 th, 2015.

117. R. Osgood, S. A. Giardini, J. B. Carlson, D. M. Steeves, K. Diest, M. Rothschild, L. Parameswaran, Prabhuram Joghee, Ryan O’Hayre, Matthew Chin, Barbara Nichols, Madan Dubey, Gustavo E. Fernandes, Jin Ho Kim, Jimmy Xu, Philip Parilla, Joseph Berry, David Ginley, Antonio Sanchez-Rubio, S. Kooi, Institute for Soldier Nanotechnologies, “Stripe-teeth metamaterial Al- and Nb-based rectennas”, SPIE NanoScience + Engineering Conference, 2015

116. Jason Christ, Tim Batson, Chris Cadigan, Jianhua Tong , Ryan O'Hayre , Svitlana Pylypenko, “Oxygen reduction reaction electrocatalysts based on perovskite oxides”, 249th American Chemical Society National meeting, Denver, Colorado, March, 2015

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115. S. Pylypenko, P. Joghee, K. Wood, A. Corpuz, J. Christ, G. Bender, R. O’Hayre, “Effect of nitrogen functionalization on stability and performance of carbon-supported PtRu electrocatalysts in acid and alkaline media.”, 249th ACS National Meeting, Denver, Colorado, March 22-26th, 2015. 

114. A. Deml, C. Musgrave, V. Stevanovic, and R. O’Hayre, “A material descriptor of oxygen vacancy formation energies in wide band gap oxides”, 249th ACS National Meeting, Denver, Colorado, March 22-26th, 2015. 

113. Clark, D., Diercks, D., Zhu, H., Kee, R., Ricote, S., Gorman, B., O’Hayre, R., “Measuring space-charge regions in proton conductors using atom probe tomography,” presented at the Rocky Mountain AVS Symposium, Westminster, CO, USA, September 17, 2014. Best oral presentation award.

112. Diercks, D., Kirchhofer, R., Clark, D., O’Hayre, R., Gorman, B., “Atom probe tomography for quantification of oxygen in oxides at the near-atomic scale,” presented at Atom Probe Tomography & Microscopy 2014, Stuttgart, Germany, August 31- September 5, 2014.

111. P. Joghee, S. Pylypenko, K. Wood, G. Bender, R. O’Hayre, “Performance and durability of an alkaline direct methanol fuel cell employing a nitrogen post-doped PtRu/C anode for alkaline direct methanol fuel cell”, 225 th

Meeting of the Electrochemical Society, Orlando, Florida, May 11-15 th, 2014.

110. Clark, D., Diercks, D., Tong, J., Ricote, S., Gorman, B., O’Hayre, R., “Examining proton conducting ceramics using atom probe tomography,” presented at the Conference on Earth and Energy Research, Golden, CO, USA, February 27-28, 2014.

109. A. Subrimaniyan, V. Stevanovic, J. D. Perkins, R. P. O’Hayre, D. S. Ginley, S. Lany and A. Zakutayev, “Non-equilibrium thin-film growth of Cu2O via combinatorial PLD”, 2013 Fall MRS Meeting, Boston, Mass. Dec 1-6th, 2013. Best student presentation award, Symposium T.

108. S. Pylypenko, K. Wood, A. Serov, P. Atanassov, R. O'Hayre, “N-Doped Graphene-Supported PtRu Direct Methanol Fuel Cell Electrocatalysts”, 224th Meeting of the Electrochemical Society, San Francisco, California, Oct. 27-Nov. 1, 2013.

107. K. Wood, S. Pylypenko, A. Corpuz, P. Joghee, A. Dameron, H. Dinh, T. Gennett, R. O'Hayre, “Performance of Nitrogen-Modified Commercial Catalysts in Acid and Alkaline Media”, 224 th Meeting of the Electrochemical Society, San Francisco, California, Oct. 27-Nov. 1, 2013.

106. A. McDaniel, A. Ambrosini, E. Coker, J. Miller, W. Chueh, R. O’Hayre, and J. Tong, “Nonstoichiometric Perovskite Oxides for Solar Thermochemical H2 and CO Production”, SolarPACES 2013, Las Vegas, NV. Sept. 17-20th, 2013.

105. N. Bonanos, J.S. Fish, S. Ricote, T. Holgate, R. O’Hayre, “Impedance response of BaCe0.2Zr0.7Y0.1O3-δ/Sr0.95Ti0.9Nb0.1O3-δ (BCZY27/STN95) composite at near-ambient temperatures”, International Workshop on Protonic Ceramic Fuel Cells Status & Prospects, Montpellier France, July 10-12 th, 2013.

104. J. Tong, S. Nikodemski, D. Clark, and R. O’Hayre, “Solid State Reactive Sintering Mechanism for Proton Conducting Ceramics”, 19th International Conference on Solid State Ionics, Kyoto, Japan, June 2-7 th, 2013.

103. A. Deml, V. Stevanovic, J. Tong, C. Musgrave, and R. P. O’Hayre, “Ab initio thermodynamics of nonstoichiometric oxides for solar thermochemical fuel production”, 19 th International Conference on Solid State Ionics, Kyoto, Japan, 3 June 2013.

102. S. Nikodemski, J. Tong, P. Parilla, D. Ginley, R. O’Hayre, and J. Berry, “Engineering Nanoionic Interfaces by Pulsed Laser Deposition for Energy Conversion and Storage”, 19 th International Conference on Solid State Ionics, Kyoto, Japan, June 2-7th, 2013.

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101. J.S. Fish, S. Ricote, F. Lenrick, L.R. Wallenberg, T. Holgate, R. O’Hayre, and N. Bonanos, “A Novel Composite Material for H2 Separation Membranes”, 19 th International Conference on Solid State Ionics, Kyoto, Japan, June 2-7th, 2013.

100. M. Sanders, H. Zhu, R.J. Kee, and R. O’Hayre, “Numerical Modeling and Gas Permeation Studies of Multi-Species Transport in Tube and Shell BZY10 Membranes”, 19 th International Conference on Solid State Ionics, Kyoto, Japan, June 2-7th, 2013.

99. J. Tong, M. Sheng, A. McDaniel, W. Chueh, R. O’Hayre, “Nonstoichiometric Oxides for Solar Fuels Production: Can we Beat Ceria?”, 19th International Conference on Solid State Ionics, Kyoto, Japan, June 2-7 th, 2013.

98. D. Clark, J. Tong, A. Allmansori, A. Morissey, I. Reimanis, R. O’Hayre, “Low-Temperature proton conductivity enhancement in nanocomposite perovskites”, 19 th International Conference on Solid State Ionics, Kyoto, Japan, June 2-7th, 2013.

97. J. Tong, D. Clark, S. Nikodemski, M. Shang, A. Herring, C. Wolden, A. Bunge, and R. O'Hayre, "Nanoionics Applied to Proton Conducting Ceramics", Pacific Rim International Conference on Electrochemistry (PRiME), Honolulu, Hawaii. October 11th, 2012.

96. S. Pylypenko, A. Corpuz, T. Olson, A. Dameron, K. Wood, P. Joghee, K. Hurst, S. Christensen, D. Ginley, B. Pivovar, R. Richards, H. Dinh, T. Gennett, and R. O'Hayre, “Effect of N-doping on Performance and Durability of Supported PtRu Direct Methanol Fuel Cell Catalyst”, Pacific Rim International Conference on Electrochemistry (PRiME), Honolulu, Hawaii. October 11 th, 2012.

95. M. Shang, J. Tong, and R. O'Hayre, “A Novel BaCo0.4Fe0.4Zr0.2O3-δ Cathode for Intermediate Temperature Proton-Conducting SOFC" , Pacific Rim International Conference on Electrochemistry (PRiME), Honolulu, Hawaii. October 11th, 2012.

94. P. Periasamy, J. Gassman, K. Rachut, J. Berry, D. Ginley, R. O’Hayre, P. Parilla and A. Klein, “Band Offset Measurements at Metal/Insulator Interface via Photoemission Spectroscopy”, AVS Rocky Mountain Regional Meeting, September 17-21st, 2012.

93. J.D. Fehribach, A.L. Bunge, J.S. Fish, C.E. Goodyer, C.P. Li, R. O’Hayre, and C.A. Wolden, “Bounds for Effective Conductivity in Nanoionic Composites”, NanoWorcester 2012, Worcester, MA.

92. *P. Periasamy, R. O’Hayre, J. Berry, P. Parilla, D. Ginley, “Metal-Insulator-Metal Point Contact Diodes for Solar Harvesting Applications”, AVS Regional Meeting, Westminster, CO, Sept 20 th, 2011. First prize poster award winner.

91. *R. O’Hayre, S. Pylypenko, K. Wood, A. Dameron, T. Olson, K. O’Neill, S. Christensen, D. Ginley, T. Gennett, K. More, A. Borisevich, and H. N. Dinh, “: Characterization of High-Surface-Area PtRu/Carbon Direct Methanol Fuel Cell Catalysts Functionalized via Nitrogen Implantation”, Materials Research Society 2011 Fall Meeting, Boston, Mass, Nov. 27-Dec. 2, 2011.

90. *J. Tong, D. Clark, M. Sanders, A. Subramaniyan, J. Fish, S. Nikodemski, R. O’Hayre “Proton Conducting Ceramics for Energy Conversion”, Low Carbon Energy Summit, Dalian, China, Oct 21st, 2011.

89. * K. Wood,1 S. Pylypenko,T. S. Olson, A. Dameron, K. O’Neill, C. C. Hays, M. A. Johnson, B. Pivovar, H. N. Dinh, T. Gennett, R. O’Hayre, “Modifying Fuel Cell Catalyst Supports Though Fluorine, Iodine, and Nitrogen Functionalization”, 220th Meeting of the Electrochemical Society, Boston, Massachusetts, October 9-14th, 2011

88. *S. Pylypenko, T.S. Olson, A. Dameron, A. Borisevich, K. More, T. Holme, K. Wood, K. O’Neill, K. Hurst,

S. Christensen, D. Ginley, B. Pivovar, H. N. Dinh, T. Gennett, R. O’Hayre, “Tuning of surface composition

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and structure of N-functionalized carbon supports and Pt-Ru phase for direct methanol fuel cell applications”, 220th Meeting of the Electrochemical Society, Boston, Massachusetts, October 9-14 th, 2011

87. *T. Olson, P. Joghee, A. Dameron, A. Corpuz, S. Pylypenko, K. Hurst, D. Ginley, T. Gennett, H. N. Dinh, R. O’Hayre, “N-Modified Carbon Supported Pt-Ru Direct Methanol Fuel Cell Catalyst Performance and Durability”, 220th Meeting of the Electrochemical Society, Boston, Massachusetts, October 9-14 th, 2011

86. *A. R. Corpuz, T. Olson, A.A. Dameron, S. Pylypenko, K. Hurst, H. N. Dinh, T. Gennet, R. O’Hayre, and R. M. Richards, “Nitrogen-doping effects on PtRu/C anodes: Fundamental Study”, American Chemical Society Fall Meeting, Denver, CO. Aug 28th-Sept 1st, 2011.

85. *K. Artyushkova, W. Patterson, S. Pylypenko, R. O’Hayre, A.A. Dameron, T. Gennett, P. Attanassov, “Multi-Analytical Study of Nitrogen-Implanted Cabron Black-Based Electrcatalysts for Oxygen Reduction”, American Chemical Society Fall Meeting, Denver, CO. Aug 28th-Sept 1st, 2011.

84. *K. Wood, S. Pylypenko, T.S. Olson, A.A. Dameron, K. O’Neill, B. Pivovar, H. N. Dinh, T. Gennett, R. O’Hayre, “Modifying Fuel Cell Catalyst Supports Though Fluorine, Iodine, and Nitrogen Functionalization”, American Chemical Society Fall Meeting, Denver, CO. Aug 28th-Sept 1st, 2011.

83. *S. Pylypenko, K. Wood, A. Queen, R. O’Hayre, A.A. Dameron, T. S. Olson, K. Hurst, S. Christensen, J. Bult, K. O’Neill, D. S. Ginley, T. Gennett, H. N. Dinh, T. Holme, A. Borisevich, K. L. More, “Improving Catalyst-Support InteractionsL From Model Systems to High-Performing Direct-Methanol Fuel Cell Catalysts”, American Chemical Society Fall Meeting, Denver, CO. Aug 28th-Sept 1st, 2011.

82. *A. A. Dameron, T. S. Olson, S. T. Christensen, J. E. Leisch, K. Hurst, S. Pylypenko, J. B. Bult, A. R. Corpuz, D. S. Ginley, R. O'Hayre, T. Gennett, and H. N. Dinh, “Sputtered PtRu Catalysts for Direct Methanol Fuel Cells”, American Chemical Society Fall Meeting, Denver, CO. Aug 28th-Sept 1st, 2011.

81. *T. S. Olson, A. A. Dameron, S. Pylypenko, K. Hurst, S. T. Christensen, J. Bult, D. S. Ginley,R. O'Hayre, H. N. Dinh, and T. Gennett, “Enhanced DMFC Pt-Ru/C based Catalyst Performance via N-Doped Support Materials”, American Chemical Society Fall Meeting, Denver, CO. Aug 28th-Sept 1st, 2011.

80. *A.A. Dameron, S.T. Christensen, K. Hurst, T. Olson, S. Pylypenko, K. O'Neill, J. Bult, D.S. Ginley, R.

O’Hayre, H.N. Dinh,, and T. Gennett, “Pt-Ru alloy catalyst development by atomic layer deposition for direct methanol fuel cells”, American Chemical Society Fall Meeting, Denver, Colorado, Aug. 28th th-Sept 1st, 2011.

79. *R. Osgood, S. Giardini, J. Carlson, G.E. Fernandes, J.H. Kim, J. Xu, M. Chin, B. Nichols, M. Dubey, P. Parila, J. Berry, D. Ginley, P. Periasamy, H. Guthrey, R. O’Hayre, “Diode-coupled Ag nanoantennas for nanorectenna energy conversion”, SPIE Conference on Plasmonics - Metallic Nanostructures and Their Optical Properties, San Diego, CA, August 21-25, 2011 

78. *A. Dameron, S. Christensen, K. Hurst, T. Olson, S. Pylpenko, K. O'Neill, J. Bult, D. Ginley, R. O'Hayre, T. Gennett, H. Dinh, “Pt-Ru alloy catalyst development by atomic layer deposition for direct methanol fuel cells”, 11th International Conference on Atomic Layer Deposition (ALD), Chico, CA, June 2011.

77. *P. Periasamy, R. O’Hayre, J. Berry, P. Parilla, D. Ginley, C. Packard, “A Novel Way to Fabricate and Characterize Metal-Insulator-Metal Devices via Nanoindentation Technique”, 37 th IEEE Photovoltaic Specialists Conference, Seattle, Washington, June 21st, 2011.

76. *T. Tauer, W. Medlin, R. O’Hayre, “An In-Silico Study of the Hydration Properties of Yttrium-doped Barium Cerate”, 18th International Conference on Solid-State Ionics, Warsaw, Poland, July 3-8, 2011

75. *M. Sanders, H. Zhu, R. Kee, R. O’Hayre, “Parameterized Exploration of Multi-Species Transport Permeation in BZY20 Using Numerical Modeling”, 18th International Conference on Solid-State Ionics, Warsaw, Poland, July 3-8, 2011

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74. *K.E. Hurst, T. Gennett, S.T. Christensen, K. J. O'Neill, J.B. Bult, S. Pylypenko, T.S. Olson, A.A. Dameron, D.S. Ginley, R.P. O'Hayre, H.N. Dinh, “A study of the nucleation and growth of platinum-ruthenium catalyst on ion-implanted highly oriented pyrolitic graphite by atomic layer deposition”, 2011 Spring ACS Meeting in Anaheim, CA, Mar. 27-31, 2011.

73. *H.N. Dinh, S. Pylypenko, A. Dameron, K.C. Neyerlin, T. Olson, S. Christensen, K. O'Neil, K.E. Hurst, J. Bult, A. Corpuz, S.R. Narayan, A. Karthik, B. Yang, C.C. Hays, M. A. Johnson, R. O'Hayre, B. Pivovar, T. Gennett, “Enhancing the Methanol Oxidation Catalyst Activity and Durability via Affecting the Catalyst-Support Interaction”, Invited talk, 2011 Spring ACS Meeting in Anaheim, CA, Mar. 27-31, 2011.

72. *B. Kiefer, K. Artyushkova, P. Atanassov, S. Pylypenko, R. O’Hayre, “Microstructure Stabilization in Non-Platinum Electrocatalyst through Co-Nitrogen Motifs”, 219 th Meeting of the Electrochemical Society, Montreal, Canada, May 1-6th, 2011.

71. *P. Periasamy, S. Christensen, P. Parilla, D. Ginley, R. O’Hayre, “Guideline for Material Selection in Metal-

Insulator-Metal Diodes for Energy Harvesting Applications”, Materials Research Society 2011 Spring Meeting, San Francisco, CA. April 25-29, 2011

70. *B. Simonds, A. Subramaniyan, R. O’Hayre, P.C. Taylor, “A Novel approach to Determine Metallic Nanoparticle Size Using Conduction Electron Paramagnetic Resonance”, Materials Research Society 2011 Spring Meeting, San Francisco, CA. April 25-29, 2011

69. *J. Tong, D. Clark, R. O’Hayre, “Experimental Investigation on Partial Conductivities of Y and Yb Co-doped Perovskite-type Barium Cerate-Zirconate Compounds”, Materials Research Society 2011 Spring Meeting, San Francisco, CA. April 25-29, 2011

68. *J. Fish, C. Goodyer, J. Fehribach, A. Bunge, R. O’Hayre, “Computational Modeling of Space Charge Layers in Nanoionic Composites”, Materials Research Society 2011 Spring Meeting, San Francisco, CA. April 25-29, 2011

67. *A. Subramaniyan, J. Tong, R. O’Hayre, N. Sammes, “Effect of BaO on the Electrical Conductivity of the Prototypical Proton-Conducting Ceramic BaCe0.8Y0.2O3-δ”, Materials Research Society 2011 Spring Meeting, San Francisco, CA. April 25-29, 2011

66. *A. Deml, A. Bunge, M. Reznikov, A. Kolessov, R. O'Hayre, “Progress toward an Ionic Field Effect Transistor: Theoretical Foundations and Experimental Challenges”, Materials Research Society 2011 Spring Meeting, San Francisco, CA. April 25-29, 2011

65. *B. Simonds, A. Subramaniyan, R. O’Hayre, P.C. Taylor, “A Novel approach to Determine Metallic Nanoparticle Size Using Conduction Electron Paramagnetic Resonance”, E-MRS 2011 Spring Meeting, Nice, France, May 9-13th, 2011.

64. * B. Kiefer, K. Artyushkova, P. Atanassov, S. Pylypenko, and R. O'Hayre, “Microstructure Stabilization in

Non-Platinum Electrocatalyst through Co-Nitrogen Motifs”, 219 th Meeting of the Electrochemical Society, Montreal, Canada, May 1 – 6th, 2011.

63. *K.E. Hurst, J. Bult, A. Dameron, S. Pylypenko, K. O'Neill, J. Leisch, K.C Neyerlin, T. Olson, R. O'Hayre, H.N. Dinh, T. Gennett, “Microwave deposition of Pt and Ru nanoparticles on modified carbon based powders”, Pacifichem Meeting, Honolulu, HI, Dec. 2010.

62. *H.N. Dinh, S. Pylypenko, T. Olson, K.C. Neyerlin, K. O'Neill, A. Dameron, J. Leisch, A. Queen, R. O'Hayre, T. Gennett, “Improving the DMFC performance and durability via optimizing the catalyst/support interactions", Pacifichem Meeting”, Honolulu, HI, Dec. 2010.

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61. *R. Pasquarelli; M. van Hest; A. Miedaner; C. Curtis; J. Perkins; R. O'Hayre; D. Ginley, “A Low-temperature Solution Precursor for In2O3-based Transparent Conductors”, Materials Research Society 2010 Fall Meeting, Boston, MA., Nov 29th-Dec 3rd, 2010.

60. *K. E. Hurst; J. Bult; A. Dameron; K. O'Neill; T. Olson; K. Neyerlin; S. Pylpenko; S. Christensen; R. O'Hayre; H. Dinh; T. Gennett, “The Effect of a Modified Carbon Matrix on the Performance and Durability of Direct Methanol Fuel Cell Catalysts”, Materials Research Society 2010 Fall Meeting, Boston, MA., Nov 29th-Dec 3rd, 2010.

59. *Y. Ke; A. Zakutayev; P. F. Ndione; P. A. Parilla; J. J. Berry; R. P. O'Hayre; D. S. Ginley, “Structure and Chemical Considerations for Doping in ZnMgO: A Path Towards Conductivity-bandgap-tunable TCO System”, Materials Research Society 2010 Fall Meeting, Boston, MA., Nov 29 th-Dec 3rd, 2010.

58. *P. Periasamy; P. A. Parilla; A. A. Dameron; J. J. Berry; D. S. Ginley; R. P. O'Hayre, “Optimization of Metal-insulator-metal Diodes for High Frequency Rectification Using Different Insulator Candidate Materials”, Materials Research Society 2010 Fall Meeting, Boston, MA., Nov 29 th-Dec 3rd, 2010.

57. *T. Tauer, R. O’Hayre, W. Medlin, “Computational Study of Proton Behavior in Yttrium-doped Barium Cerate”, American Institute of Chemical Engineers 2010 Annual Meeting, Salt Lake City, Utah, November 8 th, 2010.

56. *P. A. Parilla, P. Periasamy, J. D. Bergeson, R. O'Hayre, D. S. Ginley, “Optimizing Metal-Insulator-Metal Diodes Toward Rectenna Applications”, Symposium on Nanotechnology & Energy, University of Colorado, October 25-26, 2010.

55. *P. Periasamy, J. D. Bergeson, P. A. Parilla, D. S. Ginley, R. O'Hayre, “Metal-Insulator-Metal Point-Contact Diodes as a Rectifier for Rectenna”, Symposium on Nanotechnology & Energy, University of Colorado, October 25-26, 2010.

54. *S. Pylypenko, A. Queen, K. Neyerlin, T. Olson, A. Dameron, K. O'Neill, D. Ginley, B. Gorman, S. Kocha, H. Dinh, T. Gennett, and R. O'Hayre, “Functionalization of Carbon Materials for the Controlled Deposition of Pt Electrocatalysts for Fuel Cell Applications”, 57th International Meeting of the American Vacuum Society, Albuquerque, New Mexico, Oct 17th-22nd, 2010.

53. *K. Neyerlin, S. Pylypenko, T. Olson, J. Leisch, K. O'Neil, D. Ginley, R. O'Hayre, B. Pivovar, T. Gennett, and H. Dinh, “Enhanced Methanol and CO Oxidation of PtRu Electrocatalyst via N-Doping of Carbon Support”, 218th Meeting of the Electrochemical Society, Las Vegas, Nevada, Oct 10 th-15th, 2010.

52. *S. Pylypenko, A. Queen, K. Neyerlin, T. Olson, A. Dameron, K. O'Neill, D. Ginley, B. Gorman, S. Kocha, H. Dinh, T. Gennett, and R. O'Hayre, “The role of Nitrogen Doping on Durability in the Pt-Ru/HOPG System”, 218th Meeting of the Electrochemical Society, Las Vegas, Nevada, Oct 10 th-15th, 2010.

51. *H. Dinh, S. Pylypenko, T. Olson, K. Neyerlin, A. Dameron, J. Leisch, K. Hurst, J. Bult, K. O'Neill, A. Queen, B. Pivovar, R. O'Hayre, and T. Gennett, “Enhancing Direct Methanol Fuel Cell Performance and Durability through Ion Implanted Carbon Supports”, 218th Meeting of the Electrochemical Society, Las Vegas, Nevada, Oct 10th-15th, 2010.

50. *A. Dameron, J. Martin, S. Pylypenko, T. Olson, J. Bult, J. Leisch, K. O'Neill, R. O'Hayre, H. Dinh, D. Ginley, and T. Gennett "Characterization of Pt/Ru-carbon Powder Matrix Produced via an IBAD-Fluidized Bed Type Reactor", 218th Meeting of the Electrochemical Society, Las Vegas, Nevada, Oct 10 th-15th, 2010.

49. *J. Tong, D. Clark, R. O’Hayre, “Cost-Effective Solid-State Reactive Sintering Method for Proton Conducting Ceramics”, 15th International Solid State Proton Conductors Conference, Santa Barbara, CA, August 15-19 th, 2010.

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48. *P. Periasamy, J. Bergeson, P. Parilla, D. Ginley, R. O'Hayre, "Metal-Insulator-Metal Point-Contact Diodes as a Rectifier for Rectenna", 35th IEEE Photovoltaic Specialist Conference, Honolulu, Hawaii, June 20-25, 2010.

47. *A. Dameron, J. Leisch, K. O’Neill, S. Studer, R. O’Hayre, H. Dinh, T. Gennett, “Pt 1-xRux Sputtered Thin Films for DMFC Catalyst Applications”, 2010 Spring meeting of the American Chemical Society, San Fransisco, CA, March 21-25th, 2010.

46. *W. G. Coors and R. O’Hayre, “Co-Ionic Conductivity in Reaction Sintered BaCe0.2Zr0.6Y0.2O3- Protonic Ceramic”, 217th Electrochemical Society Conference, Vancouver, Canada, April 25-30th, 2010

45. *J. Tong, D. Clark, R. O’Hayre, “Solid-State Reactive Sintering Mechanisms for Improving Total Conductivity of Proton Conducting Ceramic, Yttrium-Doped Barium Zirconate", Electronic Materials and Applications 2010 Conference, Orlando, Florida, January 20-22, 2010. 

44. *P. Periasamy, A. Dameron, J. Bergeson, J. Berry, P. Parilla, D. Ginley and R. O'Hayre, "Fabrication and Characterization of Point-Contact Metal-Insulator-Metal Diodes for Potential Applications in Energy Harvesting", AVS 56th International Symposium and Exhibition, San Jose, California, USA November 8-13, 2009

43. *J. Tong, D. Clark, M.Hoban, R. O’Hayre, "Cost-Effective Solid Reaction Method for Proton Conducting Yttrium-Doped Barium Zirconate Ceramics ", 17th International Solid State Ionics Conference, Toronto, Canada, June 28, 2009

42. *M. Sanders, S. Elangovan, G. Coors, R. O’Hayre, "Results of Steam Flux Measurements in BZY20", 17 th International Solid State Ionics Conference, Toronto, Canada, June 28, 2009

41. *R. Pasquarelli, M. van Hest, A. Miedaner, C. Curtis, J. Perkins, J. Berry, J. Leisch, R. O'Hayre, and D. Ginley, “Solution Deposition of Amorphous IZO Films by Ultrasonic Spray Pyrolysis”, 34th IEEE Photovoltaic Specialists Conference (PVSC), Philidelphia, PA., June 7-12, 2009

40. *M. Sanders, S. Elangovan, G. Coors, R. O’Hayre, “Using Dilatometry to Measure the Hydration Thermodynamics of Perovskite-Based Steam Permeable Ceramics”, 8 th International Pacific Rim Conference on Ceramics and Glass, Vancouver, B.C., June 1-5th, 2009

39. *A. Dhanda, R. O'Hayre, and H. Pitsch, “ORR Mechanism on Single Crystal Pt/Nafion Interfaces in PEM Fuel Cell”, 215th Meeting of the Electrochemical Society, San Francisco, May 26 th, 2009.

38. *A. Dhanda, R. O'Hayre, H. Pitsch, “EIS Analysis of the Triple Phase Boundary Model”, 215 th Meeting of the Electrochemical Society, San Francisco, May 26th, 2009.

37. *R. Pasquarelli, M. van Hest, A. Miedaner, C. Curtis, J. Perkins, J. Berry, J. Leisch, Ryan O'Hayre, and D. Ginley, “Solution Deposition of In-Zn-Oxide Films By Ultrasonic Spray Pyrolysis”, Fall Meeting of the Materials Research Society, Boston, MA, Dec 2nd, 2008

36. *A. Dhanda, R. O'Hayre and H. Pitsch, “ORR Adsorbate Dynamics on Pt Single Crystal PEM Fuel Cells", 214th Meeting of the Electrochemical Society, Honolulu, Hawaii, Oct 15 th, 2008.

35. *M.F.A.M. van Hest, A. Miedaner, C.J. Curtis, J. Leisch, P. Hersh, K. Steirer, R. Pasquarelli, J.A. Nekuda, R. O'Hayre, and D.S. Ginley, “Use of Direct Write Methods for Reduced Cost Photovoltaics”, NIP24 Digital Fabrication 2008 Conference, Pittsburg, PA., Sept. 11th, 2008.

34. *R. O’Hayre, Y. Zhou, R. Pasquarelli, J. J. Berry, D. Ginley, “Enhancement of Pt-Based Catalysts Via N-Doped Carbon Supports”, 3rd Annual ASME Energy Nanotechnology Conference, Jacksonville. Florida, Aug 11th, 2008.

33. *D. S. Ginley, J. Berry, M. van Hest, J. Alleman, M. Dabney, L. Gedvilas, J. Perkins, A. Cavendor, A. Leenheer and R. O’Hayre, “Defects in Transition Metal Oxide Based Materials for Electronics”, TCO 2008, Crete, 2008.

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32. *J. Nekuda Malik, M.F.A.M. van Hest, C. Curtis, A. Miedaner, M.P. Taylor, B.J. Stanbery. R. O’Hayre, and D. Ginley, “Atmospheric Pressure Synthesis of CuInSe2 Thin Films from Liquid Precursors”, Materials World Network/Global School for Advanced Studies, Sydney, Australia, Aug 1st, 2008. (Best poster award)

31. *B. Babcock, A.J. Tupper, D. Clark, T. Fabian, R. O’Hayre, “Optimization of Air Breathing Fuel Cell Cathodes” , 6th Annual ASME Fuel Cell Science and Technology Conference, Denver, Colorado, June 17 th, 2008.

30. *M. Sanders, G. Coors, R. O’Hayre, “Modeling of Material Parameters for Increased Steam-Permeation In Gadolinium-Doped Barium Cerate Ceramic Membranes”, 6th Annual ASME Fuel Cell Science and Technology Conference, Denver, Colorado, June 17th, 2008.

29. *Y. Zhou, R. Pasquarelli, J. J. Berry, D. Ginley, R. O’Hayre, “Improving PEM Fuel Cell Catalysts Using Nitrogen-Doped Carbon Supports”, 6th Annual ASME Fuel Cell Science and Technology Conference, Denver, Colorado, June 17th, 2008.

28. *J. D. Perkins, J. J. Berry, M. F.A.M. van Hest, J. L. Alleman, M. S. Dabney, L. M. Gedvilas, D. S. Ginley, A. J. Leenheer and R. O'Hayre, “Optimization of Conductivity and Transparency in Amorphous In-Zn-O Transparent Conductors” MRS International Materials Research Conference, Chongqing, China, June 9 th, 2008.

27. *M.F.A.M. van Hest, J. A. Nekuda, J. Leisch, P. Hersh, A. Miedaner, C. J. Curtis, K. Steirer, R. O'Hayre, R. T. Collins and D. S. Ginley “Direct Write Methods for Low Cost Photovoltaics”, MRS International Materials Research Conference, Chongqing, China, June 9th, 2008. (1st place poster award)

26. *T. Fabian, R. O'Hayre, F. Prinz and J. Santiago, “Spatial and Temporal Measurements of Temperature and Reaction Species in the Cathode Diffusion Layer of a Planar Air-Breathing PEM Fuel Cell”, Symposium on Proton Exchange Membrane Fuel Cells (PEMFC 7), 212th Meeting of the Electrochemical Society, Washington DC, 2007. 

25. *J. A. Nekuda, M.F.A.M. van Hest, C. J. Curtis, A. Miedaner, R. O'Hayre and D. S. Ginley, “A Liquid Precursor Approach to CuInSe2 Based Photovoltaics.”, Spring Meeting of the Materials Research Society, San Francisco, CA. 2007

24. *A. J. Leenheer, J. D. Perkins, A. Cavendor, M. P. Taylor, M. F.A.M. van Hest, R. O'Hayre and D. S. Ginley, “Compositional Variance of Conductivity in Sputter-Deposited Amorphous Indium Zinc Oxide Transparent Films”, Spring Meeting of the Materials Research Society, San Francisco, CA. 2007

23. *J.D. Perkins, M.F.A.M. van Hest, M.I. Bertoni, C.W. Teplin, J.J. Berry, J.L. Alleman, M.S. Dabney, L.M. Gedvilas, B.M. Keyes, B. To, A. Leenheer, M.P. Taylor, Dennis Readey, R. O'Hayre, D.S. Ginley, “Combinatorial Development of Amorphous Mixed Metal Oxide Transparent Conductors”, March Meeting of the American Physical Society, Denver, CO, 2007.

22. *A. Leenheer, J. Perkins, A. Cavendor, M. Taylor, M. van Hest, R O’Hayre, D. Ginley, “Optimization of amorphous In-Zn-O (IZO) transparent conductor sputtered at ambient temperature”, March Meeting of the American Physical Society, Denver, CO, 2007.

21. *A. Dhanda, R. O'Hayre, and H. Pitsch, “Temperature Dependence of Oxygen Reduction Reaction on Single Crystal Pt/Nafion Interfaces”, Thermal and Fluid Sciences Affiliates & Sponsors Conference, Stanford, 2007.

20. *R. O'Hayre, T. Fabian, S. Litster, F. Prinz, J. Santiago, "Passive Air Breathing Fuel Cells For Portable Applications: What are the Limits to Cathode Performance?" Fall Meeting of the Materials Research Society, Portable Power Symposium, Boston, MA, 2006.

19. *R. O'Hayre, T. Fabian, S. Litster, F. Prinz and J. Santiago, "Combined Heat and Mass Transfer Model of a Passive Air Breathing Fuel Cell Cathode", Symposium on Proton Exchange Membrane Fuel Cells, 210th Meeting of The Electrochemical Society, 2006 Joint International Meeting, Cancun, Mexico, 2006.

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18. *T. Fabian, R. O'Hayre, S. Litster, F. Prinz and J. Santiago, "Water Management at the Cathode of a Planar Air-Breathing Fuel Cell with an Electroosmotic Pump", Symposium on Proton Exchange Membrane Fuel Cells, 210th Meeting of The Electrochemical Society, 2006 Joint International Meeting, Cancun, Mexico, 2006.

17. *J. Shim, S.W. Cha, R. O'Hayre, T. Gur, F. Prinz, "Proton Exchange Membranes: Polymeric Versus Solid-State", Symposium on Proton Exchange Membrane Fuel Cells, 210th Meeting of The Electrochemical Society, 2006 Joint International Meeting, Cancun, Mexico, 2006.

16. *A. Dhanda, R. O'Hayre, H. Pitsch, " Investigation of Oxygen Reduction Reaction at Pt Single Crystal/Nafion Interfaces in PEMFCs", Symposium on Electrochemical Surface Science: Recent Advances in the Study of The Electrode-Electrolyte Interface, 210th Meeting of The Electrochemical Society, 2006 Joint International Meeting, Cancun, Mexico, 2006.

15. T. Fabian, J. D. Posner, R. O'Hayre, S.W. Cha, J. K. Eaton, F. B. Prinz, J. G. Santiago, "The role of ambient conditions on the performance of a planar, air-breathing fuel cell", published in proceedings of Small Fuel Cells 2006 -Small fuel cells for portable applications, April 2 - 4, 2006 - L'Enfant Plaza Hotel Washington, DC USA

14. R O’Hayre, M. Lee, G. Feng, W.D. Nix, F.B. Prinz, “Quantitative Nano-scale AFM Impedance Imaging: Application to ORR Kinetics”, 206th Meeting of the Electrochemical Society, Honolulu, Hawaii, Oct, 2004.

13. R O’Hayre, D.M. Barnett, F.B. Prinz, “The Pt/Nafion/Air Triple Phase Boundary: Model, Experiment, and Implications for PEM fuel cells”, 206th Meeting of the Electrochemical Society, Honolulu, Hawaii, Oct, 2004.

12. R. O’Hayre, M. Lee, F. B. Prinz, “Development of a Nano-Scale Scanning Impedance Microscopy System”, 203rd Meeting of The Electrochemical Society, Paris, France, Apr. 2003.

11. R. O’Hayre, T. Fabian, S.J. Lee, F.B. Prinz, “Lateral Ionic Conduction in Planar Array Fuel Cells”, Presented at the Fall 2002 Meeting of the Electrochemical Society.

10. R. O’Hayre, S.W. Cha, T. Fabian, S.J. Lee, Y. Saito, F.B. Prinz, “Development of a Miniature Fuel Cell Array with Printed Circuit Technology”, 2002 International

Manufacturing and Packaging Society MEMS 2002 Workshop.

9. S. Kang, H. Tsuru, S. W. Cha, R. O’Hayre, M. Nakamura, Y Saito, and F. B. Prinz, “Design and Fabrication of Miniature Engines and Fuel Cells”, Invited Talk, 2004 Power MEMS, Kyoto Japan.

8. M. Lee, R. O’Hayre, T.M. Gur, and F.B. Prinz, “Solid State Electrochemical Nanopatterning on Ionically Conducting RbAg4I5 Electrolyte Using AFM Probe”, 206th Meeting of the Electrochemical Society, Honolulu, Hawaii, Oct, 2004.

7. S. W. Cha, R. O’Hayre, F. B. Prinz, “AC Impedance Investigation of Transport Phenomena in Micro Flow Channels in Fuel Cells”, 2nd International Conference on Fuel Cell Science Engineering and Technology, American Society of Mechanical Engineers, Rochester, NY, Jun, 2004.

6. S. W. Cha, S. J. Lee, R. O’Hayre, Y. I. Park, Y. Saito, F. B. Prinz, “Geometric Scale Effect of Micro Flow Channels on Performance of Micro Fuel Cell” 203rd Meeting of The Electrochemical Society, Paris, France, Apr. 2003.

5. S. W. Cha, R. O’Hayre, Y. Saito, F. B. Prinz, “Transport Phenomena in Miniature Fuel Cells”, LG Electronics, DAC Laboratory, Chang-Won, Seoul, Korea, December 2003.

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4. S. W. Cha, S. J. Lee, R. O’Hayre, Y. I. Park, Y. Saito, and F.B. Prinz, “Micro Fuel Cell Based on Thick Photoresist.” 201st Meeting of The Electrochemical Society, Philadelphia, PA, May 2002.

3. S.J. Lee, S.W. Cha, A. Chang-Chien, R. O’Hayre, Y.I. Park, Y. Saito, T Kubota, N. Kurtyama, J. Sasahara, T. Suzuki, F.B. Prinz “Factorial Design Study of Miniature Fuel Cella with Micromachined Silicon Flow Structures”, 200th Meeting of the Electrochemical Society, San Francisco, CA, September 2001.

2. A. Chang-Chien, S. W. Cha, S.J. Lee, R. O’Hayre, Y.I. Park, Y. Saito, F.B. Prinz “Planar Interconnection of Multiple Polymer Electrolyte Fuel Cells By Microfabrication”, 200 th Meeting of the Electrochemical Society, San Francisco, CA, September 2001.

1. S.J. Lee, S. W. Cha, R. O’Hayre, A. Chang-Chien, F. B. Prinz, “Miniature Fuel Cells with Non-Planar Interface by Microfabrication", 198th Meeting of tThe Electrochemical Society, Pheonix, AZ, 2000.

Refereed Proceedings Papers (List Not Complete)

*P. Periasamy, J. D. Bergeson, P. A. Parilla, D. S. Ginley and R. P. O’Hayre, “Meta-Insulator-Metal Point-Contact Diodes as a Rectifier for Rectenna”, accepted, Proceedings of 35th IEEE Photovoltaic Specialists Conference, Honolulu, Hawaii, June 20-25, 2010.

S. W. Cha, R. O’Hayre, F. B. Prinz, “AC Impedance Investigation of Transport Phenomena in Micro Flow Channels in Fuel Cells”, Proceedings of 2nd International Conference on Fuel Cell Science Engineering and Technology, American Society of Mechanical Engineers, Rochester, NY, Jun, 2004.

S. J. Lee, S. W. Cha, Y. C. Liu, R. O'Hayre, F. B. Prinz , “High Power-Density Polymer-Electrolyte Fuel Cells by Microfabrication.” In: Micro Power Sources, K. Zaghib and S. Surampudi (eds.), Proceedings Volume 2000-3, The Electrochemical Society Proceeding Series, Pennington, NJ, 2000.

S. J. Lee, S. W. Cha, R. O'Hayre, A. Chang-Chien, F. B. Prinz , “Miniature Fuel Cells with Non-Planar Interface by Microfabrication.” In: Power Sources for the New Millenium, M. Jain, M. A. Ryan, S. Surampudi, R. A. Marsh, and G. Nagarajan (eds.), Proceedings Volume 2000-22, The Electrochemical Society Proceeding Series, Pennington, NJ

Articles

“Gotta Look Sharp: Atomic force microscopy makes electrical measurements”, review by Monya Baker, MIT Technology Review, January, 2005

“Compact fuel cells may oust feeble batteries”, New Scientist Magazine, March 6 2004, p.23.

“AFM Impedance Imaging”, Applications Note, Molecular Imaging, Inc. 2004

PATENTS US Patent 6,835,488 B2 “Fuel cell with patterned electrolyte/electrode interface”US Patent 7,195,833 B2 “Solid Oxide Electrolyte with Ion Conductivity Enhancement by Dislocation”US Patent 7,341,800 B2 “Fuel cell”US Patent 7,754,368 B2 “Fuel cell”PTC/US 01/11763(WO 01/95406) “Fuel cell assembly” (Pending) WO 3/096455-A2 “Improved fuel cells” (Pending) WO 3/101629-A1, US20040013924 “Sub-micron Electrolyte Thin Film on Nano-Porous Substrate by Oxidation of Metal Film.” (Pending) U.S. Provisional Patent Application No. 61/745,355 “Treatment of Hydrogen Sulfide”; MFB Reference No.: 50756-00018

PROFESSIONAL INTERESTS Society Memberships

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The Electrochemical SocietyMaterials Research SocietyASM/TMS

Teaching InterestsAlternative energy conversion technologiesElectrochemistry and electrochemical devicesThermodynamics and kineticsStatics, Mechanics of materialsMaterials selection and designBasic materials fundamentals

Research InterestsAlternative energy conversion technologies: fuel cells, solar cells, thermoelectrics, wind powerMicro and nano-scale electrochemical characterizationScanning probe microscopy, Impedance spectroscopy, Solid ion conductors

REFERENCES

1) Professor Fritz B. Prinz (Thesis Advisor)Chair, Department of Mechanical Engineering, Stanford University

Building 530, Room 226Stanford, CA, 94305Phone: (650)723-6488 Fax: (650)723-5034E-mail: fprinz@stanford.edu

2) Professor David M. BarnettDepartment of Materials Science and Engineering, Stanford University

Building 550, Room 550KStanford, CA, 94305Phone: (650) 723-4143Fax: (650) 725-4034E-mail: Barnett@stanford.edu

3) Professor Joop SchoonmanDirector, Institute for Sustainable Energy, Delft University of Technology, The Netherlands

Delft University of TechnologyFaculty of Applied SciencesDelftChemTech Department of Chemical Technology Julianalaan 1362628 BL DelftThe NetherlandsPhone: +31 (0) 15 278 2667Fax: +31 (0) 15 278 8047E-mail: j.schoonman@tnw.tudelft.nl

4) Professor William D. NixDepartment of Materials Science and Engineering, Stanford University

Building 550, Room 550HStanford, CA, 94305Phone: (650) 725-2605Fax: (650) 725-4034E-mail: nix@stanford.edu

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5) Professor John S.J. LeeDepartment of Mechanical and Aerospace Engineering, San Jose State University

One Washington SquareSan José, CA  95192-0087Phone:  (408) 924-7167Fax:  (408) 924-3995Email:  sjlee@sjsu.edu

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