Pt/SnO 2 Electrocatalysts on Conductive Fillers

For polymer electrolyte fuel cells (PEFCs), corrosion of the carbon support of lectrocatalysts under cathode conditions is one of the important technical issues to solve, for which SnO 2 is a promising alternative support material. In this study, Pt/SnO 2 electrocatalysts with integrated conductive...

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Bibliographic Details
Published in:ECS transactions 2014-08, Vol.64 (3), p.215-220
Main Authors: Horiguchi, Dai, Tsukatsune, Takuya, Noda, Zhiyun, Hayashi, Akari, Sasaki, Kazunari
Format: Article
Language:English
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Summary:For polymer electrolyte fuel cells (PEFCs), corrosion of the carbon support of lectrocatalysts under cathode conditions is one of the important technical issues to solve, for which SnO 2 is a promising alternative support material. In this study, Pt/SnO 2 electrocatalysts with integrated conductive fillers have been developed, where the fillers act as the backbone and the built-in electron-conductive pathway. Electrochemical activity and durability of such electrocatalysts against voltage cycling between 1.0 and 1.5 V RHE are investigated. This durable electrocatalyst exhibits higher the oxygen reduction reaction (ORR) activity than Pt/SnO 2 , and comparable ORR activity to that of the standard Pt/C electrocatalysts.
ISSN:1938-5862
1938-6737
DOI:10.1149/06403.0215ecst