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Title
Oxygen reduction and carbon monoxide oxidation on Pt - from model to real systems for fuel cell electrocatalysis / Karl J.J. Mayrhofer
AuthorMayrhofer, Karl Johann Jakob
CensorFabjan, Christoph ; Vinek, Hannelore
Published2005
DescriptionXII, 138 S. : Ill., graph. Darst.
Institutional NoteWien, Techn. Univ., Diss., 2006
LanguageEnglish
Bibl. ReferenceOeBB
Document typeDissertation (PhD)
Keywords (DE)Brennstoffzelle / Sauerstoffreduktion / CO Oxidation / Platin / Platinlegierung / Elektrokatalyse / Partikelgrößeneffekt
Keywords (EN)fuel cell / oxygen reduction / CO oxidation / Platinum / Platinum alloy / electrocatalysis / particle size effect
Keywords (GND)Brennstoffzelle / Platin / Sauerstoff / Reduktion <Chemie> / Kohlenmonoxid / Oxidation / Elektrokatalyse
URNurn:nbn:at:at-ubtuw:1-19600 Persistent Identifier (URN)
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 The work is publicly available
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Oxygen reduction and carbon monoxide oxidation on Pt - from model to real systems for fuel cell electrocatalysis [6.36 mb]
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Abstract (German)

The objective of this work is to investigate the somewhat edged out fundamental knowledge gained from single crystal model systems and link certain aspects to the features of high-surface area catalysts, in order to demonstrate the importance of fundamental research and create a connection to practical applications. This is achieved by treating the ideal systems not as "one-to-one" models, but rather rationalize the effects that can be correlated to real catalysts, while always keeping the structural and electronic differences in mind. In this regard important fuel cell reactions such as the CO oxidation and oxygen reduction are investigated, and novel insights into the origin of the particle size effects are demonstrated. Based on this information from Pt systems more complicated catalysts like the promising Pt-alloys can be analyzed unambiguously. With the variety of systems discussed in this work, it can be considered as a benchmark for the further development of novel catalysts. Moreover the presented perception resulting from the applied "surface science approach" reflects the state of the art for the complex electrocatalysis of fuel cell reactions, and can consequently be supportive for everybody in the field, to researchers in industry as well as at university.

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