amy calgaro, nirala singh, professor eric mcfarland: department...
TRANSCRIPT
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Amy Calgaro, Nirala Singh,
Professor Eric McFarland: Department of Chemical Engineering
UC LEADS, UCSB, UCR
August 25th, 2011
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Energy Storage
Regenerable Fuel cell
Electrolysis
Electricity production
HBr
Br2H2
Electricity
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Energy Storage
Regenerable Fuel cell
Electrolysis
Electricity production
Br2H2
HBr
Electricity
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Ti
TiO2
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Synthesize doped TiO2
High-throughput testing
Compare to TiO2, Pt and electrographite
Optimum dopant
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Metal Oxide Synthesis Carbon powder support
Cyclic Voltammagrams
Br2 evolution
*Investigation and development of new materials for electrochemical energy conversion , Anna Ivanovskaya
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Vary Dopant
3M HBr bath
Analyze with Inductively Coupled Plasma spectrometer (ICP)
High concentrations = unstable
iCAP ICP User's Guide, Joe Doyle
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Ru doped TiO2
Pt
Glassy Carbon
Support
Fe doped TiO2
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Ru doped TiO2
Pt
Glassy Carbon
Support
Fe doped TiO2
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50
40
30
10
20
0
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-0.15
-0.1
-0.05
0
0.05
0.1
0.15
0.2
0 100 200 300 400 500
Co
ncen
trati
on
(P
PM
)
Time (hours)
Fe
Ru
Cr
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--- 5% Fe doped TiO2
--- 5% Cr doped TiO2
--- 10% Ru doped TiO2
--- TiO2 ink
--- 5% Ni doped TiO2
--- Pt Ink
--- 30% Ru doped TiO2
--- Graphite
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Fe doped TiO2
Conductive but Unstable
Ru doped TiO2
Happy Medium
Cr doped TiO2
Really stable
Great potential electrode
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Determine optimum dopant concentrations
Characterize doped TiO2
Synthesize doped electrodes
Ti
TiO2 + Dopant
*Investigation and development of new materials for electrochemical energy conversion , Anna Ivanovskaya
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Thank you to Nirala Singh, Prof. Eric McFarland
Anna Ivanovskaya and the Stucky Lab
Arica Lubin, Maria Franco-Aguilar, and UC LEADS for the wonderful opportunity to research this summer
Funding: Thank you to NSF EFRI-RESTOR grant # 1038234
for partial funding.
ICP use was made possible by the MRL Central Facilities, which are supported by the NSF
UC Office of the President for funding the UC LEADS internship program
ICP atomic emissions spectroscopy