Characterisation of proton exchange membrane fuel cell (PEMFC) failures via electrochemical impedance spectroscopy

被引：142

作者：

Merida, W.

Harrington, D. A.

Le Canut, J. M.

McLean, G.

机构：

[1] Univ British Columbia, Clean Energy Res Ctr, Vancouver, BC V6T 1Z4, Canada

[2] Univ Victoria, Inst Integrated Energy Syst, Victoria, BC V8W 3P6, Canada

[3] Hydrogen Corp, Mississauga, ON L5R 1B8, Canada

[4] Angstrom Power Corp, Vancouver, BC V7P 3N4, Canada

来源：

JOURNAL OF POWER SOURCES | 2006年 / 161卷 / 01期

关键词：

fuel cell; failure; diagnosis; impedance;

D O I：

10.1016/j.jpowsour.2006.03.067

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：

Two PEMFC failure modes (dehydration and flooding) were investigated using in situ electrochemical impedance spectroscopy (EIS) on a four-cell stack under load. The EIS measurements were made at different temperatures (70 and 80 degrees C), covering the cur-rent density range 0.1-1.0 A cm(-2), and the frequency range 0.1-2 x 10(5) Hz. Dehydration and flooding effects were observed in the frequency ranges 0.5-10(5) and 0.5-10(2) Hz, respectively. We propose that impedance measurements at separate frequency ranges (or narrow bands thereof) can be used to distinguish between flooding and dehydration events. Similar approaches may be used to diagnose other important PEMFC failures (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：264 / 274

页数：11

共 84 条

[1] A.C.-IMPEDANCE SPECTROSCOPY STUDY OF OXYGEN REDUCTION AT NAFION(R) COATED GAS-DIFFUSION ELECTRODES IN SULFURIC-ACID - TEFLON LOADING AND METHANOL CROSS-OVER EFFECTS [J].