The stability of a PtRu/C electrocatalyst at anode potentials in a direct methanol fuel cell

被引：72

作者：

Chen, Weimin

Sun, Gongquan

Liang, Zhenxing

Mao, Qing

Li, Huanqiao

Wang, Guoxiong

Xin, Qin ^{[1
]}

Chang, Hyuk

Pak, Chanho

Seung, Doyoung

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Direct Alcohol Fuel Cell Lab, Dalian 116023, Peoples R China

[2] Samsung Adv Inst Technol, Fuel Cell Program Team, Yongin 449712, Kyungki Do, South Korea

来源：

JOURNAL OF POWER SOURCES | 2006年 / 160卷 / 02期

基金：

中国国家自然科学基金;

关键词：

direct methanol fuel cell (DMFC); potential scan; stability; PtRu/C; electrocatalyst;

D O I：

10.1016/j.jpowsour.2006.02.069

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：

Potential-scan tests were conducted to evaluate the stability of a PtRu/C electrocatalyst at anode potentials in a direct methanol fuel cell (DMFC). The results show that, under normal operating conditions, the anode potential in a DMFC is benign for the PtRu/C electrocatalyst. But in the case of deep discharge or short circuit, the anode potential value may exceed 0.6V versus DHE, which is harmful to the PtRu/C electrocatalyst. The dissolution of catalyst components results in an enhanced ohmic resistance and a lowered catalytic activity for methanol electro-oxidation. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：933 / 939

页数：7

共 37 条

[1]

Aricò AS, 2001, FUEL CELLS, V1, P133

[2] Dependence of CH3OH oxidation activity for a wide range of PtRu alloys -: Detailed analysis and new views [J].