Methanol resistant cathodic catalyst for direct methanol fuel cells

被引：37

作者：

Wang, X ^{[1
]}

Waje, M

Yan, YS

机构：

[1] Univ Calif Riverside, Dept Environm Chem & Engn, Riverside, CA 92521 USA

[2] Univ Calif Riverside, Coll Engn, Ctr Environm Res & Technol, Riverside, CA 92521 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2004年 / 151卷 / 12期

关键词：

D O I：

10.1149/1.1814453

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Methanol-tolerant cathodic catalysts were successfully prepared by depositing platinum nanoparticles on heat-treated FeTPP/C [FeTPP stands for 5,10,15,20-tetraphenyl-21H, 23H porphine iron(III) chloride] and subsequently sintering the formed catalysts. Different sintering temperatures were investigated to determine its effect on methanol tolerance. Oxygen reduction with/without the presence of methanol on these new catalysts, Pt/C and FeTPP/C, was evaluated by means of potentiodynamic measurement in a rotating disk electrode system. Complete suppression of methanol oxidation while still maintaining high activity towards oxygen reduction was realized on the catalyst sintered at 700 degreesC. Kinetics analysis shows that oxygen reduction on this new catalyst still follows a first-order reaction and has a similar mechanism as that on the pure Pt electrocatalyst. (C) 2004 The Electrochemical Society.

引用

页码：A2183 / A2188

页数：6

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