CO tolerance electrocatalyst of PtRu-HxMeO3/C (Me = W, Mo) made by composite support method

被引：77

作者：

Hou, Z ^{[1
]}

Yi, B ^{[1
]}

Yu, H ^{[1
]}

Lin, Z ^{[1
]}

Zhang, H ^{[1
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell R&D Ctr, Dalian 116023, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2003年 / 123卷 / 02期

关键词：

proton exchange membrane fuel cell; CO tolerance; electrocatalyst; composite support; TEM; XRD;

D O I：

10.1016/S0378-7753(03)00515-9

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：

CO tolerance electrocatalyst of PtRu-HxMeO3/C is prepared by a composite support method, which overcomes evident shortcomings of other preparing methods. According to the result of XRD and TEM, the catalyst shows high dispersion and the HxMeO3 exists in amorphous form. The electrooxidations of CO on the catalysts have been investigated in cyclic voltammetry, in which PtRu-HxMeO3/C shows lower CO ignition potential according to hydrogen and CO spill over effects, and the bifunctional mechanism is proved to be strengthened for the involvement of HxMeO3. The CO tolerances of catalysts are compared according to the PEMFC single cell performance and anode polarization curves operated with H-2/50 ppm CO and H-2/100 ppm CO. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：116 / 125

页数：10

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