Effect of agglomeration of Pt/C catalyst on hydrogen peroxide formation

被引：199

作者：

Inaba, M ^{[1
]}

Yamada, H ^{[1
]}

Tokunaga, J ^{[1
]}

Tasaka, A ^{[1
]}

机构：

[1] Doshisha Univ, Fac Engn, Dept Mol Sci & Technol, Kyoto 6100321, Japan

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2004年 / 7卷 / 12期

关键词：

D O I：

10.1149/1.1814595

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Various amounts of 20 wt % Pt/C catalysts (56.7-5.7 mu g(carbon) cm(-2)) were loaded on glassy carbon (GC) disk electrode, and the effect of agglomeration on hydrogen peroxide formation in oxygen reduction was investigated by the rotating ring-disk electrode technique. The formation of H2O2 was enhanced with a decrease in agglomeration of Pt/C. Even in the operating potential range of polymer electrolyte fuel cell cathodes (0.6-0.8 V), 10% hydrogen peroxide was formed at 5.7 mu g(carbon) cm(-2) Pt/C loaded on GC. These results revealed that series two-electron reduction pathway, which is negligible on clean bulk Pt surface, does exist on Pt particles supported on carbon. (C) 2004 The Electrochemical Society.

引用

页码：A474 / A476

页数：3

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