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题名: Ionic resistance of the catalyst layer after the PEM fuel cell suffered freeze
作者: Hou, Junbo1, 2;  Song, Wei1, 2;  Yu, Hongmei1;  Fu, Yu1, 2;  Hao, Lixing1, 2;  Shao, Zhigang1;  Yi, Baolian1
通讯作者: 俞红梅
关键词: proton exchange membrane (PEM) fuel cell ;  subzero ;  freeze/thaw ;  electrochemical impedance spectroscopy (EIS) ;  ionic resistance
刊名: JOURNAL OF POWER SOURCES
发表日期: 2008-01-21
DOI: 10.1016/j.jpowsour.2007.10.035
卷: 176, 期:1, 页:118-121
收录类别: SCI
文章类型: Article
部门归属: 3
项目归属: 301
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Electrochemistry ;  Energy & Fuels
研究领域[WOS]: Electrochemistry ;  Energy & Fuels
英文摘要: With electrochemical impedance spectroscopy (EIS), the ionic resistances of the catalyst layer (CL) were measured at different current densities after the proton exchange membrane (PEM) fuel cell suffered the subfreezing temperature. Compared with those of the CL before being frozen, the ionic resistances unexpectedly decreased a little, which accorded well with the polarization results. Considering that the frequency-dependent penetration depth was small in the high frequency region, a semi-quantitative method based on the finite transmission-line equivalent circuit was followed to investigate the ionic resistance profile across the whole CL. The results indicated that the change of the ionic resistance profile was not uniform across the CL after the cell experienced freeze/thaw cycles, which was more evident at the higher current densities. (c) 2007 Elsevier B.V. All rights reserved.
关键词[WOS]: ELECTROCHEMICAL IMPEDANCE ;  COLD START ;  POLYMER ;  PERFORMANCE ;  DEGRADATION
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000252823400018
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/100525
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.Dalian Univ Technol, Chinese Acad Sci, Fuel Cell Syst & engn Lab, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China

Recommended Citation:
Hou, Junbo,Song, Wei,Yu, Hongmei,et al. Ionic resistance of the catalyst layer after the PEM fuel cell suffered freeze[J]. JOURNAL OF POWER SOURCES,2008,176(1):118-121.
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