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题名: 500h continuous aging life test on PBI/H3PO4 high-temperature PEMFC
作者: Hu, Jingwei;  Zhang, Huamin;  Zhai, Yunfeng;  Liu, Gang;  Yi, Baolian
关键词: high-temperature PEMFC ;  PBI/H3PO4 ;  voltage degradation ;  internal resistance ;  performance degradation
刊名: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
发表日期: 2006-10-01
DOI: 10.1016/j.ijhydene.2006.05.001
卷: 31, 期:13, 页:1855-1862
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: 500h continuous aging test on high-temperature PEMFC (phosphoric acid-doped PBI system) was conducted, steady-state performance (current density = 640 mA cm(-2)) was recorded, polarization curves were tested every 24 h, and electrochemical techniques-cyclic voltametry (CV) and electrochemical impedance spectroscopy (EIS)-were used to study the relationship between electrochemical surface area (ESA), internal resistance (R-in) and charge transfer resistance (R-ct) with time. Our research results showed that after about 100h activation, the cell performance began to degrade, and the cell voltage degradation rate is about 150 AV h(-1) at 640 mA cm(-2). AC impedance measurements showed that there was no obvious membrane degradation for internal resistance remains almost stable. The main reason for performance degradation is the decrease of ESA and the increase of Rct, which implied that obvious degradation occurs at catalyst. (c) 2006 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
关键词[WOS]: MEMBRANE FUEL-CELLS ;  ELECTROLYTE MEMBRANES ;  COMPOSITE MEMBRANE ;  OXYGEN REDUCTION ;  CATALYSTS ;  OPERATION
语种: 英语
WOS记录号: WOS:000241127900005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140229
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, PEMFC Key Mat & Technol Lab, Dalian 116023, Liaoning Prov, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Hu, Jingwei,Zhang, Huamin,Zhai, Yunfeng,et al. 500h continuous aging life test on PBI/H3PO4 high-temperature PEMFC[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2006,31(13):1855-1862.
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