Evaluation of anode catalysts for polymer electrolyte fuel cell using porous micro-electrode

被引：0

作者：

Yamada, Akihiro

Yamada, Akifumi

Umeda, Minoru

机构：

[1] Ind Res Inst Niigata Prefecture, Niigata 9500915, Japan

[2] Nagaoka Univ Technol, Dept Chem, Nagaoka, Niigata 9402188, Japan

来源：

BUNSEKI KAGAKU | 2007年 / 56卷 / 01期

关键词：

porous microelectrode; CO stripping voltammogram; anode catalyst; catalyst poisoning; fuel cell;

D O I：

10.2116/bunsekikagaku.56.55

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Anode catalysts for a fuel-cell system were evaluated by employing a porous microelectrode technique in a 0.5 mol dm(-3) H2SO4 aqueous solution. An anodic current for carbon monoxide (CO) oxidation was observed under a 1000 ppm-CO-containing hydrogen atmosphere, in which the onset potential based on CO oxidation at Pt-Ru/C shifted toward cathodic direction front that at Pt/C. In a measurement of CO-stripping voltammetry, the onset potential of CO oxidation well agreed with that of CO-containing hydrogen at Pt-Ru/C. However, in the case of Pt/C, the onset potentials were not the same. This suggests that the CO adsorptions at Pt/C and Pt-Ru/C were different in terms of energetics.

引用

页码：55 / 60

页数：6

共 17 条

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