Journal of Electroanalytical Chemistry 461 (1999) 1–9

Tribute to Professor Wolf Vielstich on the occasion ofhis 75th birthday

The increasing problems of pollution in highly popu-lated cities attributed to internal combustion engines,have strongly encouraged car manufacturers in thedevelopment of electrically driven cars. As a result ofthis, the interest in a fuel cell for vehicle transportationhas experienced a revival. It was Prof. Dr. Wolf Viel-stich, who celebrated his 75th birthday on June 18th,1998, who was an early exponent of the scientific andpractical significance of this technology. He continuestoday to give important impulses for the understanding,development and application of fuel cells.

In 1950, as the first graduate student of H. Gerischerin Gottingen, Wolf Vielstich was asked to examine, as apart of his PhD thesis, silver deposition via the applica-tion of potential steps. These experiments required theuse of a potentiostat having a time response B10−5 s.This problem, quite a task at that time, motivated theyoung scientist to design and construct the first fastresponse potentiostat, an instrument without which, anelectrochemistry laboratory would be unthinkable to-day. This fast potentiostat was the basis for the com-mercial instruments produced later on by Bank andWenking. Already at that time, and stimulated by K.F.Bonhoeffer, Vielstich produced his first independentscientific work: the correlation between the Nernst dif-fusion layer and the Prandtl layer, which was presentedat the Bunsentagung in1953.

Vielstich gained industrial experience during his stayat the Ruhrchemie AG, where he was entrusted withwork in the field of fuel cells and in Fischer–Tropsch-synthesis. During this period he wrote his contributionto the ‘Ullmanns Encyclopadie der technischen Chemie’on the hydrogenation of carbon monoxide and carbondioxide. At Lousiana State University he investigatedelectrode processes under constant current and constantpotential conditions, as a post-doc in Prof. Delahay’sgroup. Obviously, Vielstich had already decided in fa-vour of an academic career.

In 1958, he moved to the University of Bonn as ascientific co-worker of Prof. von Stackelberg. For thefollowing 30 years or more at the Institute of PhysicalChemistry in the Wegelerstraße there was a special

place for table tennis playing electrochemists from allover the world.

During the time that he was preparing his Habilita-tion, Vielstich received numerous offers from differentinstitutions. In 1960 Wernher von Braun offered himthe leadership for the development of the 2 kW-fuelcells for the Apollo-project. The invitation of Frumkinto become a professor at his Institute in Moscow andthe invitation for the leadership at the Institute forElectrochemistry in Karaikudi (India) were declined byVielstich because of his decision to finish his Habilita-tion. Entitled ‘Brennstoffelemente’ (Fuel Cells), his Ha-bilitation was published as a book in 1965. In thefollowing years this remarkable book was translatedinto the Russian, English and Spanish languages.

Vielstich continued his academic career by acceptinga professorship at the Institute of Physical Chemistry ofBonn University, where some years later (1972), he wasappointed Director.

Wolf Vielstich extended his interest to electrode ki-netics, convection and diffusion processes. On the basisof his clear physical understanding he succeeded infinding simple and elegant solutions to complicatedelectrochemical questions. Important results were pre-sented in the work with D. Jahn on the kinetics ofcharge transfer at the rotating disk electrode. Evenmore significant were his works on mass transport atring electrodes under turbulent pipe flow. With thesolution circulating at velocities up to 20 m s−1, hedeveloped an extremely efficient method of mass trans-port, which made it possible to measure standard ex-change current densities up to 100 A cm−2.

Cyclic voltammetry has become a standard methodin electrochemical laboratories. It is probably for thisreason, that even in Bonn, students do not know thatthe first cyclic voltammograms at solid electrodes insolutions of methanol and formic acid were recorded byVielstich at the Institute in Bonn. The significance ofthis work can be clearly seen by the huge number ofrequests (about three hundred!) for a special offprint ofVielstich’s publication ‘Zur qualitativen Analyse vonElektrodenreaktionen mit der potentiostatischen

0022-0728/99/$ - see front matter © 1999 Elsevier Science S.A. All rights reserved.PII S0022-0728(98)00240-X

M. Krausa / Journal of Electroanalytical Chemistry 461 (1999) 1–92

Dreiecksspannungsmethode’. For the first time it wasshown that current–voltage diagrams at solid elec-trodes could be recorded reproducibly over the wholepotential range between hydrogen and oxygen evolu-tion. The original plots of these first measurementsdecorated the wall behind his desk, awakening theinterest of some visitors who then went to have a closerlook.

Over the years, Vielstich provided considerable im-pulse to the electrocatalysis of organic oxidations. Al-ready in 1968, he had discovered the catalytic effect ofPb upon the oxidation of formic acid at platinum. Thecurrent densities, measured by cyclic voltammetry, wereenhanced by a factor of 102 by means of a sub-mono-layer Pb.

Very important for the achievement of a clear under-standing of electrocatalysis was the combination ofelectrochemical methods with other analytical methods.Continuing the development of the on-line mass spec-trometric analysis of volatile products at porous elec-trodes (DEMS) achieved by Bruckenstein andHeitbaum, Vielstich extended the method to the exami-nation of smooth electrodes. Moreover, the necessity ofanalysing involatile adsorbed species moved him toconstruct a system for transferring the electrode fromthe electrochemical cell into a UHV chamber and toexamine via thermodesorption, the electrochemicallyformed adsorbates. As a logical consequence of thefact, that during the transfer to the UHV chamber thepotential control is lost, the use of in-situ FTIR spec-troscopy for the examination of adsorbates followed.During the next years intensive FTIR-studies were con-ducted in his group. At present, the combination of theresults of these methods constitutes a solid basis forresearch and development in electrocatalysis.

No less important was his engagement as a teacher,either giving lectures or discussing in the seminars of hisgroup. Because of his demands on the quality of thepapers and on presenting ideas clearly, it was a veryhelpful educational experience to publish an article as aVielstich co-worker. Intensive discussions and correc-tions occurred, until he was satisfied with the interpre-tation and presentation of the experimental results.

Conditioned by his early experience at theRuhrchemie, Vielstich never lost his interest in thepractical applications of his results. Visitors to theBonn Institute will remember the mechanical cyclist ina showcase, which unwavering slaved on its bicycle,driven by a minute methanol fuel cell. In connectionwith the research on Pd–Pt mixed catalysts for theoxidation of formic acid and methanol in alkalinesolutions, Vielstich developed a mixed methanol–for-mate fuel cell in cooperation with Brown Bovari. Thisbattery provided energy for the operation of a televi-sion tower at 3000 m in the Swiss canton of Wallis formore than a year.

At the time of the oil crisis, in the 1970s, intensivework was devoted to the synthesis of hydrocarbons.With grants from the Ministry of Research and Tech-nology (BMFT), Vielstich was in charge of a researchproject on Fischer–Tropsch-synthesis. The main resultof this project was a new catalyst for the hydrogenationof carbon monoxide and carbon dioxide.

As a result of a proposal from Vielstich, the Eu-ropean Community supported a project for the devel-opment of a direct methanol fuel cell, of which he wasthe co-ordinator. The use of Pt–Ru-catalysts formethanol oxidation was extended later on to the searchfor CO tolerant catalysts for hydrogen oxidation in aco-operation project with the ForschungszentrumJulich.

In 1988, after 30 years of scientific work at theUniversity of Bonn, Vielstich became a professor emer-itus. But his great interest in electrochemical questionshas not yet let him retire. Playing table tennis, gliding,playing the organ or making video films were far fromsufficient as the only activities in his life. Therefore helooked for a new way to continue his active scientificwork.

After his first retirement, laboratories in the formerPadagogische Fakultat were put at Vielstich’s disposal.This place was the platform for the further work of hisgroup. During the next 5 years, an international groupof electrochemists (from Russia, Egypt, Bulgaria,Czech. Republic, Japan, Argentina, Brazil, China,Spain and the Netherlands) worked in these rooms nextto the river Rhine. Working in this international atmo-sphere was a great pleasure for all members and a veryvaluable life experience, which could be found only in asmall number of places.

In 1990 Vielstich organised the International Discus-sion Meeting of the Deutsche Bunsengesellschaft inBonn. In 1993 he handed over the newly created de-partment to a succeeding professor and since 1994 hehas worked as a visiting professor at the University ofthe Bundeswehr in the town were he was born, Munich.

His successful scientific life found expression in ahuge number of publications. Besides the book ‘FuelCells’, he wrote in collaboration with W. Schmicklerthe book ‘Elektrochemische Kinetik’ and with C.Hamann, two textbooks ‘Elektrochemie’ which are wellknown by German students. The latter was thoroughlyrevised and appeared in a new version this year, to-gether with an English translation by A. Hamnett whowas also a co-author. Vielstich has published more than240 articles in international journals. Of these, about 70were produced after his first retirement in 1988!

This special issue of the Journal of ElectroanalyticalChemistry is dedicated to Prof. Dr. Wolf Vielstich. Theauthors are friends, colleagues and former studentsfrom all over the world. With their contributions theywant to congratulate him on the occasion of his 75th

M. Krausa / Journal of Electroanalytical Chemistry 461 (1999) 1–9 3

birthday. All the authors involved and many electro-chemists and non-electrochemists as well, wish himmany years in good health and hope to have the chancefor further fruitful scientific discussions or private con-versations with Wolf Vielstich.Happy birthday Wolf Vielstich!

Michael KrausaFraunhofer Institut fur Chemische Technologie,

Pfinztal.

Bibliography of Publications by Wolf Vielstich

H. Gerischer, W. Vielstich, Untersuchungen mit ra-dioaktiven Indikatoren uber Austausch- und Diffu-sionsvorgange an Silberelektroden, Z. Elektrochem. 56,(1952) 380.W. Vielstich, Der Zusammenhang zwischen Nern-stscher Diffusionsschicht und Prandtlscher Stromungs-grenzschicht, Z. Elektrochem. 57, (1953) 464.H. Gerischer, W. Vielstich, Zur Elektrolyse bei kon-stantem Elekrodenpotential. I, der Strom–Zeit-Verlaufbei gehemmter Entladung mit Nach-lieferung durchDiffusion und Ruckschlusse auf die Kinetik, Z. Phys.Chem. NF 3 (1955) 16.W. Vielstich, H. Gerischer, Zur Elektrolyse bei kon-stantem Potential II, Untersuchungen uber die Kinetikder Abscheidung einfacher Zink- und komplexer Silber-Ionen, Z. Phys. Chem. NF 4, (1955) 10.P. Ruetschi, W. Vielstich, Polarographische Methodezur Bestimmung der Dissoziationsgeschwindigkeit vonSauren, Z. Phys. Chem. NF 4 (1955) 124.W. Vielstich, Zur Kinetik des Stoffaustausches zwis-chen Gasen und Flussigkeiten, Chem. Ing. Tech. 28(1956) 543.P. Delahay, W. Vielstich, Kinetic of the dissociation ofweak and bases-application of polarography andvoltammetry at constant current, J. Am. Chem. Soc. 77(1955) 9455.W. Vielstich, P. Delahay, Voltage-step method of thekinetic study of east electrode reactions, J. Am. Chem.Soc. 79 (1957) 1874.F. Schnur, W. Vielstich, Kohlenoxyd-Hydrierung: The-orie und Verfahrensgrundlagen, Ullmanns Encyklo-padie der technischen Chemie, 3 (9) (1957) 690.W. Vielstich, Zum Mechanismus der Sauerstoffelek-trode in alkalischem Elektrolyten, Z. Phys. Chem. NF15 (1958) 409.W. Vielstich, pH-Messungen in stark alkalischen Lo-sungen auch bei Temperaturen uber 100°C, Z. Instru-mentenkd. 67, (1959) 154.J. Giner, W. Vielstich, Zur galvanostatischen Bestim-mung der Dissoziationsgeschwindigkeit schwacherSauren, Z. Elektrochem. 64, (1960) 128.W. Vielstich, D. Jahn, Zur Messung schnellar Reak-tionen in Losung mit Hilfe der rotierendenScheibenelektrode, Z. Elektrochem. 64, (1960) 43.

W. Vielstich, Theorie und Anwendung der rotierendenScheibenelektrode, Z. Anal. Chem. 173, (1960) 84.W. Vielstich, U8 ber H2O2-Brennstoffelemente beiniederen Temperaturen, Electrochim. Acta 2 (1960)341.E. Joachim, W. Vielstich, Versuche zur Entwicklungvon ‘Membranelementen’, Electrochim. Acta 3 (1960)244.M.V. Stackelberg, W. Vielstich, D. Jahn, Die rotierendeScheibenelektrode, An. Real. Soc. Esp. Fis. Quim. Ser.B, Tomo LVI (B), 5 (1960) 475.W. Vielstich, D. Jahn, Die Anwendung der rotierendenScheibenelektrode zum Studium schneller Reaktionenin Losungen, Advances in Polarography, Pergamon,1960, Band 1, S. 282.W. Vielstich, Die Abscheidungsspannung von Wasserst-off bei Elektrolyse waßriger Losungen mit Raney-Metallelektroden, Chem. Ing. Tech. 2 (1961) 75.D. Jahn, W. Vielstich, Rates of electrode processes bythe rotating disk method, J. Electrochem. Soc. 109(1962) 849.W. Vielstich, Zur Energieersparnis bei der Chlor–Al-kali-Elektrolyse mit Hilfe einer reversiblen Wasserstoff-Abscheidungs- oder Sauerstoff-Losungselektrode alsHauptkathode, Chem. Ing. Tech. 34 (1962) 346.W. Vielstich, Zur qualitativen Analyse von Elektro-denreaktionen mit der potentiostatischen Dreieckspan-nungsmethode, Z. Instrumentenkd. 72 (1963) 29.W. Vielstich, Zum Mechanismus der elektrochemischenOxycation von Methlalkohol, Chem. Ing. Tech. 35(1963) 362.W. Vielstich, H. Schuehardt, M.V. Stackelberg, U8 berdie Abhangigkeit des Deuterium-Trennfaktors von derPolarisation der kathode, Ber. Bunsenges. Phys. Chem.67 (1963) 645.H.V. Buttlar, W. Vielstich, H. Barth, Deuterium- undTritium-Trennfaktoren bei der elektrolytischen Wasser-stoffabscheidung, Ber. Bunsenges. Phys. Chem. 67(1963) 650.A. Kutschker, W. Vielstich, Zum Mechanismus derelektrochemischen Ameisensaure-Oxydation in sauremLeitelektrolyten, Electrochim. Acta 8 (1963) 985.W. Vielstich, Monographie ‘Brennstoffelemente: Mod-erne Verfahren zur elektrochemischen Energiegewin-nung’, Verlag, Weinheim, 1965, S. 388.W. Vielstich, U. Vogel, U8 ber die Art des Zwischen-produktes bei der anodischen Oxydation von Ameisen-saure in saurem Leitelektrolyten, Ber. Bunsenges. Phys.Chem. 68 (1964) 688.W. Vielstich, in: Methanol Air Fuel Cell, Proceedingsof the fourth International Symposium on Batteries,D.H. Collins (Ed.), Batteries 2, Pergamon, London,(1965) S. 359.H. Lauer, W. Vielstich, Bestimmung anodischerWasserstoff/Deuterium-Trennfaktoren an Edelmetal-lelektroden, Ber. Bunsenges. Phys. Chem. 69 (1965)538.

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W. Vielstich, in: B.S. Baker (Ed.), Alcohol–Air FuelCells: Development and Applications, Hydrocarbon FuelCell Technology, Academic, New York, (1965) S. 79.W. Vielstich, Brennstoffelemente Moderne Verfahrenzur elektrochemischen Energiegewinnung, Verlag,Weinheim 1965.J. Mrha, W. Vielstich, Einfluß des Sauerstoff-Partial-druckes auf die Potentialeinstellung von Diffusionselek-troden aus Aktivkohle und mogliche analytischeAnwendungen, Z. Instrumentenkd. 74 (1966) 235.J. Mrha, W. Vielstich, U. Vogel, Untersuchung derkatalytischen Aktivitat von Kohle/Sauerstoff-Elektro-den mit Hilfe der potentiostatischen Dreieckspan-nungsmethode, Z. Phys. Chem. 52 (1967) 215.H. Schmidt, W. Vielstich, Einfluß von Edelmetall-Mis-chkatalysatoren auf die anodische Oxydation vonMethanol und Formiat, Z. f. Anal. Chem. 224 (1967)84.J. Mrha, W. Vielstich, Influence of the oxygen partialpressure on the potential establishment of charcoaldiffusion-electrodes and conclusions on the mechanism,in: D.H. Collins (Ed.), Batteries 3, Pergamon, London,(1966) S. 445.C.H. Hamann, W. Vielstich, U. Vogel, Direkterzeu-gung elektrischer aus chemischer Energie, Chem. Un-serer Zeit 2 (1967) 62.H. Schmidt, W. Vielstich, Eigenschaften, Aufbau undtechnische Anwendungen von Sauerstoff-Diffusion-selektroden, Chem. Ing. Tech. 39 (1967) 761.J. Mrha, W. Vielstich, Zur Sauerstoffelektrode in hy-drazinhaltigem alkalischem Elektrolyten, Abh. Saechs.Akad. Wissen. 49 (1968) 71.H. Schmidt, W. Vielstich, Brennstoffelemente–Standder Technik 1966/67, Chem. Ing. Tech. 40 (1968) 145.W. Vielstich, U. Vogel, Small size liquid fuel/air andzinc/air primary cells, Proc. Am. Chem. Soc.: Advancesin Chemistry Series 90 (1969) 145.M. Gutjahr, W. Vielstich, Zur anodischen Oxydationvon hydrazin in alkalischem Elektrolyten, Chem. Ing.Tech. 40 (1968) 180.H. Schmidt, W. Vielstich, Brennstoffelemente fur flus-sige Brennstoffe, Teil II, 1, Chem. Ing. Tech. 41 (1969)701.H. Schmidt, W. Vielstich, Brennstoffelemente fur flus-sige Brennstoffe, Teil II, 2, Chem. Ing. Tech. 41 (1969)765.W. Vielstich, U. Vogel, M. Kamat, J. Mrha, ZumMechanismus der anodischen Oxydation von Ammo-niak in alkalischen Elektrolyten, Entropie, 32 (1970) 31.G. Clinckspoor, H. Schmidt, W. Vielstich, Elektro-denreaktionen in protonenfreien organischen Elek-trolytlosungen, Chem. Ing. Tech. 4 (1970) 206.W. Vielstich, E. Schwarzer, Der Einfluß von Blei aufdie anodische Oxydation der Ameisensaure an Platin,Drittes Int. Symposium, Brussel 1969, PressesAcademiques Europeennes, Bruxelles 1969, S. 220.

W. Vielstich, Fuel Cells, Wiley, New York, 1970.W. Vielstich, H. Schmidt, Brennstoffelemente, Teil III,Entwicklungstendenzen und Moglichkeiten der technis-chen Anwendung, Chem. Ing. Tech. 42 (1970) 1266.C.H. Hamann, W. Vielstich, U8 ber den Nachweiskleiner Mengen Formiat in alkalischer Losung in Ge-genwart von kohlenmonoxid, J. Electroanal. Chem. 32,(1971) 459.W. Vielstich, U. Vogel, Zur anodischen Oxydation vonAmmoniak in alkalischem Elektrolyten bei Umgebung-stemperatur, Chem. Ing. Tech. 43 (1971) 195.E.D. Struck, W. Vielstich, Zur anodischen Oxydationvon Wasserstoff aus Knallgasgemischen, Electrochim.Acta 17 (1972) S. 1829.W. Vielstich, Moderne Methoden zum Studium vonElektrodenvorgangen, Metalloberflache, 25 (9) (1971)297.W. Vielstich, Untersuchungen uber Reaktionsablaufund Elektrokatalyse in Zellen mit flussigen Brennstof-fen, Battelle-Institut, Frankfurt, Information 11, (1971)S. 56.C.H. Hamann, W. Vielstich, Die Oxidation vonKohlenmonoxid an Platin in alkalischen Elektrolyten,Ber. Bunsenges. Phys. Chem. 75 (9) (1971) 918.B. Gostisa-Mihelcic, W. Vielstich, A. Heindrichs, Prazi-sionsmessungen des Diffusionskoeffizienten des Protonsmit Hilfe einer rotierenden Scheibenelektrode, Ber.Bunsenges. 76 (1972) 19.J. Heitbaum, W. Vielstich, Untersuchungen zur Ammo-niakbildung bei der Hydrazinzersetsung, Electrochim.Acta 17 (1972) 1529.H.F. Henssen, W. Vielstich, U8 ber den Einfluß derElektrolyse wassriger Losungen auf die Einstellung desRuhepotentials einer Platin–Sauerstoffelektrode,Metalloberflache 3 (1972) 113.H. Schmidt, W. Vielstich, Anwendungsmoglichkeitender potentiodynamischen Methode, Messtechnik Jahrg.80 (1972) 31.H. Schmidt, W. Vielstich, Elektrochemische Stromquel-len heute, Chem. Unserer Zeit 4 (6) (1972) 101.J. Heitbaum, W. Vielstich, Untersuchungen zur an-odischen Oxidation des Hydrazins im alkalischen-Elek-trolyten, Teil I, Electrochim. Acta 18 (1973) 501.F. Heitbaum, W. Vielstich, Untersuchungen zur an-odischen Oxidation des Hydrazins im alkalischen Elek-trolyten, Teil II, Electrochim. Acta 18 (1973) 967.E. Schwarzer, C.H. Hamann, W. Vielstich,Dreieckspannungsuntersuchungen der Ameisensaureox-idation an blankem Platin in schwefelsaurer Losung,Electrochim. Acta 18 (1973) 561.E. Schwarzer, W. Vielstich, Zum Einfluß von auf Platinadsorbiertem Blei auf den Mechanismus der Ameisen-saure-Oxidation, Chem. Ing. Tech. 4 (1973) 201.W. Schmickler, W. Vielstich, Electron transfer rates inthe Levich and Dogonadze theory of redox reactions,Electrochim. Acta 18 (1973) 883.

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C.H. Hamann, H. Schoner, W. Vielstich, Zum Stoff-transport in turbulenter Stromung-Messung elektro-chemischer Grenzstrome an einer rotierendenRingelektrode, Ber. Bunsenges. 77 (7) (1973) 484.B. Gostics-Mihelcic, W. Vielstich, Bestimmung derGeschwindigkeitskonstanten einiger schwacher Saurenmit Hilfe rotierender Elektroden Einfluß des elek-trischen Feldes in der Doppelschicht, Ber. Bunsenges.77 (7) (1973) 476.W. Vielstich, Entwicklungsstand moderner elektro-chemischer Stromquellen, Wehrtechnik 10 (1973) 372.W. Vielstich, Elektrochemische Energiekonvertierungmit Hilfe von Brennstoffelementen und Metall/Luft-Zellen, Proc. XXIVth Intern. Congr. JUPAC Hambg.1974.J. Heitbaum, W. Vielstich, Moderne Methoden zumStudium von Elektrodenvorgangen, Angew. Chem. 21(1974) 756.J. Heitbaum, W. Vielstich, Modern methods for thestudy of electrode processes, Angew. Chem. 13 (11)(1974) 683.E.W. Dreesen, A. Heindrichs, W. Vielstich, Elektro-chemische Untersuchungen zum Stofftransport in tur-bulenter Rohrstromung zu Ringelektroden, Ber.Bunsenges. 79 (1) (1975) 12.E.W. Dreesen, W. Vielstich, Theoretische. Unter-suchungen zum Stofftransport in turbulenter Rohrstro-mung zu Ringelektroden, Ber. Bunsenges. 79 (1) (1975)6.J. Gonzales-Velasco, J. Heitbaum, W. Vielstich, U8 berdie Reproduzierbarkeit des Deckschichtdiagramms anGoldelektroden im reinen alkalischen Elektrolyten,Metalloberflache, 29 (4) (1975) 168.P. Taberner, J. Heitbaum, W. Vielstich, Short commu-nication: The influence of the electrolyte compositionon the formate oxidation in alkaline formate-air fuelcells, Electrochim. Acta 21 (1976) 439.W. Schmickler, W. Vielstich, Elektrochemie II–HKinetik elektrochemischer Systeme, Steinkopff-Verlag,Darmstadt 1976.C.H. Hamann, W. Vielstich, Elektrochemie I, Taschen-text 41, Verlag, Weinheim, 1997.W. Schmickler, W. Vielstich, Answer to some criticalremarks by R.R. Dogonadze and A.M. Kuznetsov onour earlier paper, Electrochim. Acta 19 (1974) 963.K. Arnolds, J. Heitbaum, W. Vielstich, Investigationson the rupture of the N–N-bond within the anodicoxidation and catalytic decomposition of hydrazine, Z.Naturforschg. 29a (1974) 359.L. Grambow, W. Vielstich, Diffusion coefficients andkinetic parameters in copper sulfate electrolytes and incopper fluoroborate electrolytes containing organic ad-ditions agents, J. Electrochem. Soc., 121 (6) (1974) 779.J. Heitbaum, W. Schmickler, W. Vielstich, Theorie derAbscheidung von Wasserstoff und Sauerstoff, Chem.Ing. Techn. 48 (1976) 155.

F. Barz, U. Vogel, W. Vielstich, Messung der Oberfl-achentemperatur rotierender Elektrodenkorper, J. Elec-troanal. Chem. 69 (1976) 415.J. Gonzales-Velasco, J. Heitbaum, W. Vielstich, Mes-sung des Ruhepotentials einer sauerstoffbespulten Pt-Elektrode bei gleichzeitiger Bestrahlung desElektrolyten in einer Co-60-Quelle, Electrochim. Acta21 (1976) 447.W. Vielstich, C.H. Hamann, The Role of the Solid inElectrochemical Phenomena: Treatise on Solid StateChemistry, Vol. 6B, Plenum Press, New York, 1976.W. Vielstich, Zur Entwicklung elektrochemischerStromquellen fur die Elektrotraktion, ETZ 98 (1)(1977).D. Kitzelmann, W. Vielstich, Th. Dittrich, Zur selek-tiven Hydrierung von Kohlenmonoxid zu C2-bis C4-Olefinen, Chem. Ing. Tech. 49 (6) (1977) 459.W. Vielstich, F. Barz, Zum Studium von Reaktionenund Stofftransport an rotierenden Elektroden, Chem.Ing. Tech. 49 (4) (1977) 299.W. Vielstich, Alternativwege zur Energieversor-gung:physikalisch–chemische Beitrage, Chemie UnsererZeit 11 (5) (1977) 131.M. Beltowska-Brzezinska, W. Vielstich, Der kinetischeIsotopieeffekt bei der elektrochemischen Oxidation vonAlkoholen, Electrochim. Acta 22 (1977) 1313.H. Forst, J. Heitbaum, W. Vielstich, Herstellung undEigenschaften beschichteter WiederaufladbarerZinkelektroden, J. Power Sources 2 (1977/78) 177.W. Hauffe, J. Heitbaum, W. Vielstich, The anodicoxidation of ethylene glycol at platinum gold and Pt/Au alloys in alkaline solution, Proc. Symp. ‘ElectrodeMaterials and Processes for Energy Conversion andStorage’ ECS-Meeting, Philadelphia 1977.W. Vielstich, Recent advances in electrocatalysis andtheir implications for fuel cells, Proc. Symp ‘ElectrodeMaterials and Processes for Energy Conversion andStorage’ ECS-Meeting, Philadelphia 1977.Ch. Bernstein, A. Heindrichs, W. Vielstich, Investiga-tions of fast electrode processes by means of a micro-ring electrode in turbulent pipe flow, J. Electroanal.Chem. 87 (1978) 81.W. Vielstich, L. Grambow, Neuartige Batterie-Systeme,HETZ 10/18, 99 (10) 609.W. Vielstich, Alkaline Fuel Cell Electrocatalysis, Proc.Workshop ‘The Electrocatalysis of Fuel Cell Reactions’Brookhaven 1978, The Electrochem. Soc. Inc., Prince-ton 1979, S.67.M. Ritschel, W. Vielstich, Sea water activated alu-minium–air cell, Electrochim. Acta 24, p. 885.G. Hoffmann, M. Ritschel, W. Vielstich, Neutral elec-trolyte aluminium/air cell, Progress in Batteries andSolar Cells 2 (1979) 207.Ch. Bernstein, W. Vielstich, On the investigation ofvery fast reactions in electrochemistry, Proc. 3rd Symp.on Electrode Processes, Boston 1979 The Electrochem.Soc. Inc., Princeton 1980, S. 350.

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D. Kitzelmann, W. Vielstich, ‘in-situ’ -Untersuchungender Primarreaktionen bei der Hydrierung von Kohlen-monoxid an Eisenkatalysatoren, Z. Phys. Chem. NF112 (1978) 215.Kohle als Basis I Elektrizitat, Nachr. Chem. Tech. Lab.27 (8) (1979) 491.Kohle als Basis II Die Hydrierung von Kohle undKohlenoxid, Nachr. Chem. Tech. Lab. 27 9 (1979) 553.T. Iwasita, W. Vielstich, On the electrochemical oxida-tion of 1-3 dioxolan, Electrochim. Acta 25 (1979) 703.W. Vielstich, C.H. Hamann, Elektrochemie II, Elektro-denprozesse, Angew. Elektrochemie,Taschentext 42,Verlag, Weinheim 1981.W. Vielstich, Basic electrochemical aspects of batteriesand fuel cells, Proc. 1. Seminario Nacional Sobre-Sis-temas Eletroquimicos, Fortaleza 1980, UniversidadeFederal do Ceara, S. 106.P. Fischer, J. Heitbaum, W. Vielstich, Zum Mechanis-mus der Sauerstoffreduktion, Chem. Ing. Tech. 52(1980) 423.M. Ritschel, W. Vielstich, Neue Hinweise uber einenCarbid-Mechanismus bei der Kohlenmonoxid-Hy-drierung, Chem. Ing. Tech. 52 (4) (1980) 327.W. Vielstich, Moderne Aspekte der elektrochemischenEnergiespeicherung, Ber. Bunsenges. Phys. Chem. 84(1980) 951.W. Vielstich, Moderne Aspekte der elektrochemischenEnergiespeicherung, Proc. Symp. Electrochemistry inIndustry-New Directions, Cleveland 1980.Th. Dittrich, H.W. Buschmann, W. Vielstich, Interac-tion of carbon monoxide and hydrogen with metal filmsof Fe, Co, Ni and FeCo-alloy, Ber. Bunsenges. Phys,Chem. 85 (1981) 289.W. Vielstich, T. Iwasita, Brennstoffzellen Direk-tumwandlung chemischer in elektrische Energie, Natur-wissenschaften 69 (1982) 372.W. Guther, W. Vielstich, Investigation on the Electro-catalytic Dehydrogenation of CHO-Compounds inAcidic Media via a Palladium Membrane, Electrochim.Acta 27 (1982) 811.W. Vielstich, Sekundarsysteme H2/Ni, Redox-Zellen,Zn/O2 und Zn/Br2, Symp, Elektrochem. EnergiequellenIII, Mannheim 1981.R. Holze, W. Vielstich, Impedanzmessungen anporosen Sauerstoffelektroden, DECHEMA Monogra-phie, Verlag Chemie 90 (1981) 31.O. Wolter, Ch. Giordano, J. Heitbaum, W. Vielstich,Mass spectroscopic cyclic voltammetry for mechanisticstudies in organic electrocatalysis, Proc. Symp. Electro-catalysis, The Electrochem. Soc. Inc., Pennington USA(1982) 235.W. Vielstich, E. Knauf, Investigation of nickel whiskernetworks as electrodes for hydrogen and oxygen evolu-tion, J. Electrochem. Soc. 129 (1982) 1273.F. Barz, W. Vielstich, Hydrogen evolution during open-circuit corrosion and anodic polarization of Al, Mg and

Li, Bulletin de la Societe Chimique Beograd (Supple-ment) 48 (1983) 37.H. Baltruschat, W. Vielstich, Hydrogen evolution dur-ing open-circuit corrosion and anodic polarization ofAl, Mg and Li, J. Electroanal. Chem. 154 (1983) 141.F. Barz, Ch. Bernstein, W. Vielstich, On the investiga-tion of electrochemical reactions by the application ofturbulent hydrodynamics, in: H. Gerischer, Ch. W.Tobias (Eds.), Advances in Electrochem. and Elec-trochem. Eng. 13 (1985) 261.W. Vielstich, U8 ber primare und sekundare Metall/Luft-Zellen, in: K. Eberts, Fa. Sonnenschein (Eds.), Proc.Int. Tech. Symp., ‘Notstromversorgung mit Batterien,Munchen 1983.W. Vielstich, M. Ritschel, Entwicklung und Prufungvon Fischer–Tropsch-Katalysatoren auf Whisker-Basis,Statusseminar C1-Chemie, Projektleitung Rohstof-forschung KFA Julich (1982) 277.W. Vielstich, On the limitations of stationary methodsfor the study of fast electrode reactions, ExtendedAbstr. No. 815, ECS-Meeting, San Francisco 1983.R. Holze, W. Vielstich, Optimization of porous fuel cellelectrodes using the AC-impedance method, ExtendedAbstract No. 716, ISE-Meeting, Erlangen 1983, Ad-vances in Battery Materials and Processes, Proc. Symp.Washington 1983, The Electrochem. SGC. (1984) 230.G. Hoffmann, W. Vielstich, The influence of organicexpanders on the kinetics of the lead electrode, J.Electroanal. Chem. 180 (1984) 565.W. Schmickler, W. Vielstich, Grundlagen der Elek-trokatalyse, DECHEMA Monographie, Verlag 97(1984) 123.J. Herrmann, H. Schmidt, W. Vielstich, Electrochemi-cal investigation of a fast chemical step between twocharge transfer reactions, Z. Phys. Chem. NF 139(1984) 83.W. Vielstich, Fuel cells—an option for the future?,Progress in Batteries and Solar Cells 5 (1984) 27.W. Vielstich, F. Barz, Ch. Bernstein, Mass transfer andhydrodynamics–new results in electrochemical kineticsvia steady state methods, Extended Abstract No. IV, I,ISE-Meeting Erlangen 1983.R. Holze, W. Vielstich, The kinetics of oxygen reduc-tion at porous teflon-bonded fuel cell electrodes, J.Electrochem. Soc. 131 (1984) 2298.R. Holze, W. Vielstich, The kinetics of oxygen reduc-tion at porous teflon-bonded fuel cell electrodes, Elec-trochim. Acta 29 (5) (1984) 607.R. Holze, W. Vielstich, Characterization of lithiumprimary cells by ac-impedance measurements, Progressin Batteries and Solar Cells 5 (1984) 77.R.M. Cervino, A.J. Arvia, W Vielstich, Scanning elec-tron microscopy and voltammetry of preferentially ori-ented polycrystalline platinum surfaces, Surf. Sci. 154(1985) 623.

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R. Holze, C. Sondag, W. Vielstich, Carbon-felt: a newcathode material for Li- and Ca-primary cells, Ex-tended Abstract, Las Vegas, Electrochem. Soc. 109(1985).M. Beltowska, H. Heitbaum, W. Vielstich, The influ-ence of UPD-lead on the adsorption of formaldehyde,formic acid and methanol on Pt in acid solution, Elec-trochim. Acta 30 (1985) 1465.A. Castro-Luna, T. Iwasita, W. Vielstich, UPD metalelectrocatalysis of formic acid oxidation at teflonbonded carbon substrate electrodes, J. Electroanal.Chem. 196 (1985) 301.E. Santos, T. Iwasita, W. Vielstich, On the use of thecoulostatic method for the investigation of fast redoxsystems, Electrochim. Acta 31 (1986) 431.W. Vielstich, Zur Katalyse von upd-Schichten an tech-nischen Elektroden, DECHEMA-Monographie 102(1986) 329.H.W. Buschmann, St. Wilhelm, W. Vielstich, On thestudy of methanol oxidation by electrochemical SIMS,Electrochim. Acta 31 (1986) 939.H.G. Bochmann, W. Vielstich, On the reaction rate ofthe Fe2+/Fe3+ redox couple in sulfate solution, Elec-trochim. Acta 33 (1988) 805.H.W. Buschmann, M Ritschel, W. Vielstich, The for-mation of hydrocarbons via the reaction of HCN withH2 on iron catalysts, J. Catalysis 106 (1987) 337.I.A.A. Ketelaar, K. Kordesch, G. Richter, G. Sandst-ede, W. Vielstich, A. Winsel, Brennstoffzellen,DECHEMA-Studie Wasserstofftechnologie (1986) 243.B. Bittins-Cattaneo, E. Santos, W. Vielstich, Voltam-metry of UPD copper and formic acid as characteriza-tion of preferentially oriented polycrystalline platinumsurfaces, Electrochim. Acta 31 (12) (1986) 1495.R. Holze, I. Vogel, W. Vielstich, New oxygen cathodesfor fuel cells with organic fuels, J. Electroanal. Chem.210 (1986) 277.T. Iwasita, W. Vielstich, On-line mass spectroscopy ofvolatile products during methanol oxidation at plat-inum in acid solution, J. Electroanal. Chem. 201 (1986)403.W. Vielstich, On the influence of electrode structureand upd-metal on formic acid oxidation, ExtendedAbstract No.342, Electrochem. Soc. Boston 1986.W. Vielstich, New approach to direct methanol oxida-tion in acid electrolytes, electrode materials and pro-cessses for energy conversion, Electrochem. Soc.Pennington (1987) 349.W. Vielstich, Brennstoffzellen als Energiewandler ineiner Wasserstoffwirtschaft, Chem. Ing. WesenDECHEMA-Monographie, Verlag Chemie, 106 (1986)299.A.E. Bolzan, T. Iwasita, W. Vielstich, On the electro-chemical oxidation of glucose identification of volatileproducts by on-line mass spectroscopy, J. Electrochem.Soc. 134 (1987) 3052.

E. Santos, E. Leiva, W. Vielstich, U. Linke, Compara-tive study of CO-adsorbates for different structures ofplatinum surfaces, J. Electroanal. Chem. 227 (1987)199.W. Vielstich, Berechtigung der Blei-Saure-Technologiein der zukunftigen technischen Anwendung, Die-Blei-Saure-Traktionsbatterie 1. Anwendersymposium am19.9.86, Druck DETA (1987) 5.St. Wilhelm, W. Vielstich, H.W. Buschmann, T. Iwa-sita, Direct proof of the hydrogen in the methanol-ad-sorbate at platinum—an ECTDMS study, J.Electroanal. Chem. 229 (1987) 377.T. Iwasita, W. Vielstich, E. Santos, Identification of theadsorbate during methanol oxidation, J. Electroanal.Chem. 229 (1987) 367.U. Vogel, I. Vogel, H. Schmidt, W. Vielstich, ZurWirksamkeit organischer Expander im Bleiakkumula-tor, Dechema-Monographie 109 (1987) 257.R. Holze, W. Vielstich, A simplified spectrometric setupfor in-situ IR spectroscopy of electrode surfaces usingSNIFTIRS, Electrochim. Acta 33 (1988) 1629.W. Vielstich, I. Vogel, U. Vogel, Saure Methanol–Sauerstoff-Brennstoffzelle, Dechema-Monographie 112(1988) 125.J. Ahn, R. Holze, W. Vielstich, Untersuchungen anS-auerstoffelektroden fur Brennstoff-zellen mit sauremElektrolyten, Dechema-Monographie 112 (1988) 33.S. Wilhelm, H.W. Buschmann, W. Vielstich, Elektro-chemische Thermodesorptions-Massenspektroskopie(ECTDMS), Dechema-Monographie 112 (1988) 113.T. Iwasita, W. Vielstich, The electrochemical oxidationof ethanol on platinum, a SNIFTIRS study, J. Elec-troanal. Chem. 257 (1988) 319.St. Wilhelm, T. Iwasita, W. Vielstich, COH and CO asadsorbed intermediates during methanol oxidation onplatinum, J. Electroanal. Chem. 238 (1987) 383.J. Mrha, U. Vogel, S. Kreuels, W. Vielstich, Zur Unter-suchung des Sauerstoffkreislaufs im gasdichten PbO2/Pb-Zellen mit Separator als Elektrolyttrager, J. PowerSources 27 (1989) 201.P. Novak, P.A. Christensen, T. Iwasita, W. Vielstich,Anodic oxidation of propylene carbonate on platinum,glassy carbon and polypyrrole—an in-situ FTIR-study,J. Electroanal. Chem 263 (1989) 37.W. Vielstich, P.A. Christensen, S.A. Weeks, A. Ham-nett, Anodic oxidation of propylene carbonate on plat-inum, glassy carbon and polypyrrole—an in-situFTIR-study, J. Electroanal Chem. 242 (1988) 327.B. Bittins-Cattaneo, S. Wilhelm, E Cattaneo, H.WBuschmann, W. Vielstich, Intermediates and productsof ethanol oxidation on platinum in acid solution, Ber.Bunsenges. 92 (1988) 1210.V. Solis A. Pavese, T. Iwasita, W. Vielstich, Investiga-tion of formic acid oxidation on palladium in acidicsolutions by on-line mass spectroscopy, J. Electroanal.Chem. 255 (1988) 155.

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M. Kirschenmann, D. Wohrle, W. Vielstich, Synthesisof 5,10,15,20-tetrakisphenylporphyrins on carbon sup-port for the cathodic reduction of oxygen in fuel cells,Ber. Bunsenges. 92 (1988) 1403.T. Iwasita, W. Vielstich, New in-situ IR-results onadsorption and oxidation of methanol on platinum inacidic solution, J. Electroanal. Chem. 250 (1988) 451.Einsatzmoglichkeiten und Stand der Technik vonBrennstoff-zellen, VGB Kraftwerkstechnik 69, 6 (1989)559.T. Iwasita, B. Rasch, E Cattaneo, W Vielstich, ASNIFTIRS study of ethanol oxidation on platinum,Electrochim. Acta 34 (1989) 1073.P. Novak, W. Vielstich, The influence of water on thecycling behaviour of the polypyrrole electrode inlithium cells, J. Electrochem. Soc 137 (1990) 1036.W. Vielstich, P. Novak, Neue Methoden zur Unter-suchung von Electroden fur Stromquellen, in: K.Eberts, Fa. Sonnenschein (Eds.), Sixth Intern. Techn.Symposium ‘Notstromversorgung mit Batterien’,Munchen (1990) 109.P. Novak, W. Vielstich, Performance of the low-cur-rent-density-synthesized polypyrrole in lithium cellscontaining propylene carbonate, J. Electrochem. Soc.137 (1910) 1681.S. Wasmus, E Cattaneo, W. Vielstich, Reduction ofcarbon dioxide to methane and ethene, an on-line MSstudy with rotating electrodes, Electrochim. Acta 35(1990) 771.W. Vielstich, Entwicklungsarbeiten fur eine Methanolverzehrende Brennstoffzelle, Symposiumsband Indus-trieseminar Brennstoffzellen, Zentrum fur Sonnenenen-ergie und Wasserstoff-forschung, Stuttgart (1989).B. Bittins-Cattaneo, E. Cattaneo, P. Konigshofen, W.Vielstich, New developments in electrochemical massspectroscopy, in A. Bard (Ed.), Electroanalytical Chem-istry, Marcel Dekker, NewYork 17 (1991) 181.E. Santos, E.M.P. Leiva, W. Vielstich, CO adsorbateon Pt (111) single crystal surfaces, Electrochim. Acta 36(1991) 555.E. Cattaneo, W. Vielstich, Computergestutzte-Voltametrie und on-line Massenspektroskopie,Dechema Monographie, Verlag Chemie 117 (1989) 345.W. Vielstich, Kalte Fusion in Palladium Informationzur aktuellen Diskussion, MNU 42 (1989) 206.P. Novak, W. Vielstich, In-situ FTIR-Spektroskopie alseine Methode zur Charakterisierung leitfahiger Poly-mere, Dechema Monographie, Verlag Chemie 121(1990) 311.P. Novak, W. Vielstich, An electrochemical study ofpyrrole/N methyl pyrrole copolymer, J. Electroanal.Chem. 300 (1991) 99.B. Rasch, P. Novak, W. Vielstich, Electrochemical andin situ FTIR investigations on polythiophene in propy-lene carbonate, Synth. Met. 41–43 (1991) 2963.

P. Novak, B. Rasch, W. Vielstich, Over-oxidation ofpolypyrrole in propylene carbonate, an in situ FTIRstudy, J. Electrochem.Soc. 138 (1991) 3300.T. Iwasita, F.C. Nart, W. Vielstich, Over-oxidation ofpolypyrrole in propylene carbonate, an in situ FTIRstudy, Ber. Bunsenges. 94 (1990) 1030.W. Vielstich, T. Iwasita, H.V. Buttlar, F. Farzin, K.U8 belgunn, Search for neutrons from controlled deu-terium concentrations in palladium, J. Electroanal.Chem. 303 (1991) 211.E. Cattaneo, B. Rasch, W. Vielstich, Anodic stability ofpropylene carbonate electrolytes at potentials above 4volts versus lithium, an on-line MS and in-situ FTIRstudy, J. Appl. Electrochem. 21 (1991) 885.B. Rasch, E. Cattaneo, P. Novak, W. Vielstich, Theinfluence of water on the oxidation of propylene car-bonate in lithium cells—an electrochemical in-situFTIR and on-line study, Electrochim. Acta 36 (1991)1397.B. Rasch, E. Cattaneo, P. Novak, W. Vielstich, Zuranodischen Oxidation von Propylencarbonat an Platin,eine in-situ FTIR und on-line Studie, Dechema Mono-graphie, Verlag Chemie, Weinheim 124 (1990) 739.P. Novak, W. Vielstich, Electrochemical and in-situFTIR characterisation of polypyrroles, Mater. Sci. Fo-rum 62–64 (1990) 471.T. Iwasita, F.C. Nart, B. Lonez, W. Vielstich, On thestudy of adsorbed species at platinum from methanol,formic acid and reduced carbon dioxide via in-situFTIR spectroscopy, Electrochim. Acta 37 (1992) 2361.T. Iwasita, F.C. Nart, B. Lopez, W. Vielstich, In-situFTIR characterization of electrocatalysts for the oxida-tion of methanol, Extended Abstract 29, Elec. Soc. ST.Louis (1992).M. Krausa, D. Kolbe, W. Vielstich, Untersuchungenzur Elektroanalyse der anodischen Methanoloxidationan Platin–Rhenium, Dechema Monographie, VerlagChemie, Weinheim 125 (1992) 577.V. Schmidt, W. Vielstich, Study of homogeneous reac-tions with the on-line mass spectrometry and poten-tiometry: the Belousov–Zhabotinsky-reaction, Ber.Bunsenges. 96 (1992) 534.B. Bittins-Cattaneo, B. Lopez, St. Wasmus, W. Viel-stich, Reduction of oxygen in an acid methanol/oxyge-n(air) fuel cell: an online MS study, J. Appl.Electrochem. 23 (1993) 625.B. Rasch, W. Vielstich, Polythiophenes via thiophene,bithiophene and terthiophene in popylene carbonate–an electrochemical and ‘in situ’ FTIR study, J. Elec-troanal. Chem. 370 (1994) 109.M. Krausa, T. Iwasita, W. Vielstich, Zur Elek-trokatalyse der Methanoloxidation in Brennstoffzellen,Dechema Monographie 128 (1993) 161.S. Wasmus, W. Vielstich, Methanol oxidation at carbonsupported Pt- and PtRu-electrodes–an on-line MSstudy using technical electrodes, J. Appl. Electrochem.23 (1993) 120.

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S. Wasmus, W. Vielstich, The electro-oxidation offormic acid, formamide and dimethylformamide inaqueous acid solution–a comparative study using on-line MS, Electrochim. Acta 38 (1993) 18.S. Wasmus, W. Vielstich, Electro-oxidation and reduc-tion of acetonitrile in aqueous acid solution–a DEMSstudy, J. Electroanal. Chem, 345 (1993) 323.S. Wasmus, W. Vielstich, Electro-oxidation and reduc-tion of dimethysulfoxide and sulfolane in aqueous acidsolution–an on-line MS study, Electrochim. Acta 38(1993) 175.S. Wasmus, W. Vielstich, Electro-oxidation and reduc-tion of propylenecarbonate, ethylenecarbonate and 1,2-propanediolinaqueous acid solution–a comparativestudy using on-line MS and isotope labelled elec-trolytes, Electrochim. Acta 38 (1993) 541.A. Kuver, D. Kitzelmann, W. Vielstich, On the quani-tative determination of carbon dioxide in air, J. Elec-troanal.Chem. 353 (1993) 255.S. Wasmus, W. Vielstich, Influence of acetonitrile,dimethylsulfoxide and lead on the electro-oxidation ofsmall organic molecules–an on-line MS study, J. Elec-troanal. Chem. 359 (1993) 175.S. Wasmus, W. Vielstich, Electrochemical stability ofsome organic solvents at Pt-electrodes in aqueous acidelectrolytes–a study using on-line mass spectrometry, J.Serb. Chem. Soc. 57 (1992) 897.J. Gieshoff, H.W. Buschmann, W. Vielstich, Adsorp-tion and hydrogenation of CO2 on precipitated ironcatalysts: a combined TPD and Mossbauer study, Ber.Bunsenges. Phys. Chem. 98 (1994) 647.W. Vielstich, A. Kuver, M. Krausa, C. Ferreira, K.Petrov, S. Srinivasan, Adsorption and hydrogenation ofCO2 on precipitated iron catalysts: a combined TPDand Mossbauer study, Electrochem. Soc. Meeting May1993, Ext. Abstract 29.X.H. Xia, W. Vielstich, Enhanced oxidation of carbonmonoxide on platinum in HClO4 via interaction withacetonitrile, Electrochim. Acta 39 (1994) 13.S. Wasmus, W. Vielstich, Comment on the paper ‘On-line mass spectroscopic investigation of the reductionand oxidation of NO2 on graphite-supported copperoxide electrodes in aqueous media’ by S. Sunohora etal., J. Electroanal. Chem. 374 (1994) 243.M. Krausa, W. Vielstich, Study of the electrocatalyticinfluence of Pt/Ru and Ru on the oxidation of residuesof small organic molecules, J. Electroanal. Chem. 379(1994) 307.W. Vielstich, F.C. Nart, M. Krausa, Von derForschung zur Anwendung, Beispiele zum Trend in derAngewandten Elektrochemie, Proc. 1 Ulmer Elektro-chemische Tage, Uni-Verlag Ulm (1994) 18.S.Wasmus, D.A. Tryk, W. Vielstich, Electrochemicalbehavior of nitromethane and its influence on the elec-tro-oxidation of formic acid: an on-line MS study, J.Electroanal. Chem. 377 (1994) 205.

R. Dalbeck, H.W. Buschmann, W. Vielstich, TDSstudy of the anodic layer on emersed polycrystallineplatinum, J. Electroanal. Chem. 309 (1994) 233.R. Dalbeck, H.W. Buschmann, W. Vielstich, Ex-situTDS investigations of carbon monoxide electrosorbedon polycrystalline platinum, J. Electroanal. Chem. 372(1994) 251.A. Kuver, I. Vogel, W. Vielstich, Distinct performanceevalution of a direct methanol SPE fuel cell. A newmethod using a dynamic hydrogen reference electrode,J. Power Sources 52 (1994) 77.E. El Behadi, H. W. Buschmann, T. Iwasita, W. Viel-stich, M.M. Ghoneirn, Characterisation of CO adsorp-tion on platinum via electrochemical thermodesorptionmass spectroscopy, Elektrokhimiya 31 (1995) 1205.M. Krausa, W. Vielstich, Potential oscillations duringmethanol oxidation at Pt electrodes Part 1, J. Elec-troanal. Chem. 399 (1995) 7.R. Dalbeck, W. Vielstich, Ex-situ analysis of sulfateadsorption on platinum via ECTDMS, Electrochim.Acta 40 (1995) 2687.X.H. Xia, T. Iwasita, F. Ge, W. Vielstich, Structuraleffects and reactivity in methanol oxidation on poly-crystalline and single crystal platinum, Electrochim.Acta, 41 (1996) 711.D. Kolbe, W. Vielstich, Adsorbate formation duringthe electrochemical reduction of carbon dioxide at pal-ladium, a DEMS study, Electrochim. Acta 41(1996)2457.W. Vielstich, T. Iwasita, Fuel cells, in: G. Ertl, H.Knotzinger, J. Weitkamp (Eds.), Handbook of Hetero-geneous Catalysis, Verlag Wiley-VCH, Weinheim(1997) 2090.T. Iwasita, X. Xia, H.D. Ließ, W. Vielstich, Spek-troskopischer Beitrag zur Elektrokatalyse organischerReaktionen Einfluß der Wasseradsorption auf dieReaktionsgeschwindigkeit, 4. Ulmer ElektrochemischeTage, Universitat Ulm GmbH, (1997) 83.H. Gerischer, W. Vielstich, Electrocatalysis, in: G. Ertl,H. Knotzinger, J. Weitkamp (Eds.), Handbook of Het-erogeneous Catalysis, Verlag Wiley-VCH, Weinheim(1997) 1325.X.H. Xia, T. Iwasita, W. Vielstich, Study of the natureof formic acid adsorbates formed at rough Pt and itsinteraction with CO, Electrochemistry China 3 (1997)26.T. Iwasita, X.H. Xia, H.D. Ließ, W. Vielstich, On theelectrocatalysis of organic oxidations, influence of wa-ter adsorption on the rate of reaction, J. Phys. Chem. B101 (1997) 7542.C.H. Hamann, A. Hamnett, W. Vielstich, Electrochem-istry, Wiley-VCH, Weinheim, 1998.C.H. Hamann, W. Vielstich, Elektrochemie, Wiley-VCH, Weinheim, 1998..