Development of anode catalysts for a direct ethanol fuel cell

被引：338

作者：

Vigier, F

Coutanceau, C

Perrard, A

Belgsir, EM

Lamy, C

机构：

[1] Univ Poitiers, Equipe Electrocatalyse, CNRS, UMR 6503, F-86022 Poitiers, France

[2] Univ Lyon 1, Inst Rech Catalyse, UPR 5401, F-69626 Villeurbanne, France

来源：

JOURNAL OF APPLIED ELECTROCHEMISTRY | 2004年 / 34卷 / 04期

关键词：

direct ethanol fuel cell; electrooxidation; ethanol; platinum; rhenium; tin;

D O I：

10.1023/B:JACH.0000016629.98535.ad

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Ethanol electrooxidation was investigated at platinum based electrodes: Pt, Pt-Sn, Pt-Re dispersed on a high surface area carbon powder. The atomic composition of the bimetallic catalyst was varied and the best results were obtained with an atomic ratio Pt:X close to 100:20. The electrocatalytic activity of Pt, PtSn and PtRe was compared using cyclic voltammetry and long-term electrolyses at constant potential. Under voltammetric conditions and in a single direct ethanol fuel cell, PtSn was the most active catalyst. During electrolysis ethanol was oxidized to acetaldehyde (AAL), acetic acid (AA) and carbon dioxide. On PtSn/C and PtRe/C, the ratio AA/AAL was found to be always lower than unity. Otherwise, PtSn electrocatalysts were the most selective towards the production of CO2 compared to Pt and PtRe electrodes.

引用

页码：439 / 446

页数：8

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