Analysis of electrocatalyst degradation in PEMFC caused by cell reversal during fuel starvation

被引：448

作者：

Taniguchi, A

Akita, T

Yasuda, K

Miyazaki, Y

机构：

[1] Natl Inst Adv Ind Sci & Technol, Spec Div Green Life Technol, Ikeda, Osaka 5638577, Japan

[2] NAIST, Nara Inst Sci & Technol, Grad Sch Mat Sci, Ikoma, Nara 6300192, Japan

来源：

JOURNAL OF POWER SOURCES | 2004年 / 130卷 / 1-2期

关键词：

PEMFC; fuel cell; fuel starvation; cell reversal; electrocatalyst;

D O I：

10.1016/j.jpowsour.2003.12.035

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：

The damage caused by cell reversal during proton exchange membrane fuel cell (PEMFC) operation with fuel starvation was investigated by a single cell experiment. The samples from degraded membrane-electrode assemblies (MEAs) were characterized. Chemical analysis of the anode catalyst layer of MEA samples by energy dispersive X-ray analysis (EDX) clearly showed ruthenium dissolution from the anode catalyst particles. Severe ruthenium loss was observed especially in the fuel outlet region. A reduced carbon monoxide (CO) tolerance was found by CO stripping voltammetry and measurement of deteriorated the fuel cell performance. Surface area loss of the cathode platinum by sintering was also detected by transmission electron microscopy (TEM) analysis and cyclic voltammetry. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：42 / 49

页数：8

共 26 条

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