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题名: Performance degradation studies on PBI/H3PO4 high temperature PEMFC and one-dimensional numerical analysis
作者: Hu, Jingwei;  Zhang, Huamin;  Zhai, Yunfeng;  Liu, Gang;  Hu, Jun;  Yi, Baolian
通讯作者: 张华民
关键词: PBI/H3PO4 ;  high temperature PEMFC ;  performance degradation ;  one-dimension model ;  electrochemical surface area
刊名: ELECTROCHIMICA ACTA
发表日期: 2006-10-25
DOI: 10.1016/j.electacta.2006.05.020
卷: 52, 期:2, 页:394-401
收录类别: SCI
文章类型: Article
部门归属: 3
项目归属: 303
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Electrochemistry
研究领域[WOS]: Electrochemistry
英文摘要: Five hundred hours continuous aging test at constant discharge current (640 mA cm(-2)) was performed on PBI/H3PO4 high temperature PEMFC unit cell, electrochemical techniques-linear sweep voltammetry (LSV) and AC impedance measurement were used to investigate the changes of electrochemical surface area (ESA) and high frequency resistance (internal resistance) with time. Initial experimental results showed that during 500 h continuous aging test the main reason for cell performance degradation is the decrease of ESA caused by sintering. In addition, a one-dimensional mathematical model was constructed, the concentration distributions of cathode reactant gases (O-2 and gaseous H2O) were calculated and polarization curves recorded during aging test were simulated based on the model, the simulated polarization curves compare well with the experimental results. (c) 2006 Elsevier Ltd. All fights reserved.
关键词[WOS]: MEMBRANE FUEL-CELLS ;  INTERDIGITATED FLOW-FIELDS ;  COMPOSITE MEMBRANE ;  OXYGEN REDUCTION ;  LAYER ;  OPERATION ;  CATALYSTS
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000242164000002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/97339
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, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Hu, Jingwei,Zhang, Huamin,Zhai, Yunfeng,et al. Performance degradation studies on PBI/H3PO4 high temperature PEMFC and one-dimensional numerical analysis[J]. ELECTROCHIMICA ACTA,2006,52(2):394-401.
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