A polymer electrolyte fuel cell life test: 3 years of continuous operation

被引：190

作者：

Cleghorn, S. J. C. ^{[1
]}

Mayfield, D. K. ^{[1
]}

Moore, D. A. ^{[1
]}

Moore, J. C. ^{[1
]}

Rusch, G. ^{[1
]}

Sherman, T. W. ^{[1
]}

Sisofo, N. T. ^{[1
]}

Beuscher, U. ^{[1
]}

机构：

[1] WL Gore & Associates, Elkton, MD 21922 USA

来源：

JOURNAL OF POWER SOURCES | 2006年 / 158卷 / 01期

关键词：

polymer electrolyte fuel cells; life test; stationary fuel cells; fuel cell diagnostics; AC impedance; cyclic voltammetry;

D O I：

10.1016/j.jpowsour.2005.09.062

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：

Implementation of polymer electrolyte fuel cells (PEMFCs) for stationary power applications requires the demonstration of reliable fuel cell stack life. One of the most critical components in the stack and that most likely to ultimately dictate stack life is the membrane electrode assembly (MEA). This publication reports the results of a 26,300 h single cell life test operated with a commercial MEA at conditions relevant to stationary fuel cell applications. In this experiment, the ultimate MEA life was dictated by failure of the membrane. In addition, the performance degradation rate of the cell was determined to be between 4 and 6 mu V h(-1), at the operating current density of 800 mA cm(-2). AC impedance analysis and DC electrochemical tests (cyclic voltammetry and polarization curves) were performed as diagnostics during and on completion the test, to understand materials changes occurring during the test. Post mortem analyses of the fuel cell components were also performed. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：446 / 454

页数：9

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