Electro-oxidation of hydrogen with carbon monoxide on Pt/Ru-based ternary catalysts

被引：52

作者：

He, CZ ^{[1
]}

Kunz, HR ^{[1
]}

Fenton, JM ^{[1
]}

机构：

[1] Univ Connecticut, Dept Chem Engn, Storrs, CT 06269 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2003年 / 150卷 / 08期

关键词：

D O I：

10.1149/1.1583714

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Five carbon-supported Pt/Ru-based catalysts (Pt/Ru, Pt/Ru/Os, Pt/Ru/Au, Pt/Ru/SnOx, and Pt/Ru/WOx) were studied for electro-oxidation of H-2 and H-2 with 1% CO at the anode of a proton exchange membrane fuel cell. For H-2 oxidation, the performance of the Pt/Ru anode was not affected by addition of W, Os, and Au. However, the Pt/Ru/SnOx catalyst was found to result in a very poor performance for H-2 oxidation. For electro-oxidation of H-2 with 1% CO, the Pt/Ru/WOx catalyst was the most active catalyst and the Pt/Ru/Au catalyst was the poorest. Pt/Ru/WOx was almost twice as active as the Pt/Ru catalyst at practical potentials. A new intermediate mechanism was proposed to explain the CO tolerance of Pt/Ru-based catalysts. (C) 2003 The Electrochemical Society.

引用

页码：A1017 / A1024

页数：8

共 48 条

[1] METHANOL OXIDATION ON CARBON-SUPPORTED PLATINUM-TIN ELECTRODES IN SULFURIC-ACID [J].