A novel Pt/Au/C cathode catalyst for direct methanol fuel cells with simultaneous methanol tolerance and oxygen promotion

被引：55

作者：

Wang, Jiajun ^{[1
]}

Yin, Geping ^{[1
]}

Wang, Guangjin ^{[1
]}

Wang, Zhenbo ^{[1
]}

Gao, Yunzhi ^{[1
]}

机构：

[1] Harbin Inst Technol, Dept Appl Chem, Lab Electrochem, Harbin 150001, Peoples R China

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2008年 / 10卷 / 06期

基金：

中国国家自然科学基金;

关键词：

DMFCs; platinum catalysts; methanol tolerance; oxygen-reduction reaction;

D O I：

10.1016/j.elecom.2008.03.009

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A novel Pt/Au/C catalyst was prepared by depositing the Pt and Au nanoparticles on the carbon support. The synthesized catalysts were characterized by energy-dispersive X-ray (EDX) and transmission electron microscopy (TEM), and electrochemically analyzed for activity towards oxygen-reduction reaction and methanol oxidation reaction. EDX and TEM results reveal that Pt nanoparticles supported on carbon supports were separated by Au nanoparticles. The electrochemical analysis indicate that the novel catalyst showed the enhanced methanol tolerance while maintaining a high catalytic activity for the oxygen-reduction reaction, which could be attributed to the less methanol adsorption on Pt/Au/C catalyst. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：831 / 834

页数：4

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