Electrocatalytic Activity and CO Tolerance Properties of Mesostructured Pt/WO3 Composite as an Anode Catalyst for PEMFCs

被引：80

作者：

Cui, Xiangzhi ^{[1
]}

Guo, Limin ^{[1
]}

Cui, Fangming ^{[1
]}

He, Qianjun ^{[1
]}

Shi, Jianlin ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 10期

基金：

中国国家自然科学基金;

关键词：

FUEL-CELLS; METHANOL OXIDATION; HYDROGEN; PT-WO3; PTRU; RU; ELECTROOXIDATION; PERFORMANCE; ELECTRODES; WO3;

D O I：

10.1021/jp8079205

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：

A mesostructured Pt/WO3 electrochemical catalyst has been prepared by a loading small amount of Pt (7.5 wt %) on mesoporous tungsten oxide, which was synthesized by a simple one-step casting method using mesoporous silica (KIT-6) as a hard template. The resultant mesostructured Pt/WO3 catalyst showed high electrocatalytic activity for hydrogen electrooxidation, and the mass activity (mA center dot mg-Pt-1, per mass of Pt) of it for hydrogen electrooxidation was more than three times of that of the commercial 20 wt % Ph/C catalyst (E-TEK). In addition, it exhibited much improved resistance to CO poisoning relative to the 20 wt % Pt/C catalyst. Since the catalyst is also stable in an electrochemical environment, it could serve as an alternative electrocatalyst for proton exchange membrane fuel cells with high electrocatalytic activity and CO tolerance.

引用

页码：4134 / 4138

页数：5

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