Comparison of methanol electrooxidation on carbon supported Pt and PtRu catalysts

被引：3

作者：

Peng, C

Cheng, X ^{[1
]}

Zhang, Y

Chen, L

Fan, QB

机构：

[1] Xiamen Univ, Dept Mat Sci & Engn, Xiamen 361005, Peoples R China

[2] Xiamen Univ, Dept Chem, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China

[3] Inst Gas Technol, Des Plaines, IL 60018 USA

来源：

ACTA PHYSICO-CHIMICA SINICA | 2004年 / 20卷 / 04期

关键词：

direct methanol fuel cell; methanol electrooxidation; electrocatalytic activity; hydrogen adsorption; catalyst;

D O I：

10.3866/PKU.WHXB20040423

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The methanol electrooxidation behaviors on commercial carbon supported Pt and PtRu catalysts in acid solution were compared by carrying out electrochemical studies. The potentiodynamic and potentiostatic experimental results showed that the PtRu/C has a higher electrocatalytic activity for the electrocatalytic oxidation of methanol than the Pt/C. Alloy formation of Ru with Pt not only modified the characteristics of H-2 adsorption on the surface of catalyst but also shifted cathodically the reduction peaks of metal oxide on the cathodic sweep with respect to Pt/C. The interaction of CH3OH with Ru is a temperature-activated process requiring elevated temperature.

引用

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页码：436 / 439

页数：4

共 8 条

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