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题名: AC impedance characteristics of a 2 kW PEM fuel cell stack under different operating conditions and load changes
作者: Yan, Xiqiang2;  Hou, Ming1;  Sun, Liyan1;  Liang, Dong1;  Shen, Qiang1;  Xu, Hongfei2;  Ming, Pingwen2;  Yi, Baolian1
关键词: AC impedance ;  PEMFC ;  stack
刊名: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
发表日期: 2007-12-01
DOI: 10.1016/j.ijhvdene.2007.06.024
卷: 32, 期:17, 页:4358-4364
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Electrochemistry ;  Energy & Fuels
研究领域[WOS]: Chemistry ;  Electrochemistry ;  Energy & Fuels
英文摘要: This paper mainly presents the AC impedance characteristics of a 2 kW PEMFC stack under different operating conditions and load changes. The AC impedances of the fuel cell stack are examined by a fuel cell impedance meter. Air stoichiometry, air humidity, and operation temperature are shown to have significant effects on the AC impedance of stack. When air stoichiometry decreases, the mass transfer resistance of stack increases obviously, but the influences on other resistances are very slight. The air humidity and operation temperature mainly influence the charge transfer resistance of stack. The influences of load changes on the AC impedance of stack are also investigated, and the results of which show that it is quite necessary to adjust the humidity of reactant gas according to the fuel cell load changes during fuel cell running. The AC impedance diagnosis of stack can provide some useful information for the running of fuel cell stack. (c) 2007 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
关键词[WOS]: PART I ;  SPECTROSCOPY ;  ELECTRODES ;  GAS ;  CONDUCTIVITY ;  TEMPERATURE ;  PERFORMANCE ;  TECHNOLOGY ;  DIAGNOSIS ;  BEHAVIOR
语种: 英语
WOS记录号: WOS:000251977800032
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140712
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Dalian Sunrise Power Co Ltd, Dalian 116025, Peoples R China

Recommended Citation:
Yan, Xiqiang,Hou, Ming,Sun, Liyan,et al. AC impedance characteristics of a 2 kW PEM fuel cell stack under different operating conditions and load changes[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2007,32(17):4358-4364.
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