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题名: A mathematical model for PEMFC in different flow modes
作者: Ge, SH;  Yi, BL
关键词: proton exchange membrane fuel cell ;  water transport ;  mathematical model ;  flow mode ;  counterflow
刊名: JOURNAL OF POWER SOURCES
发表日期: 2003-10-01
DOI: 10.1016/S0378-7753(03)00584-6
卷: 124, 期:1, 页:1-11
收录类别: SCI
文章类型: Article
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: A two-dimensional, steady state model for proton exchange membrane fuel cell (PEMFC) is presented. The model is used to describe the effect of flow mode (coflow and counterflow), operation conditions and membrane thickness on the water transport, ohmic resistance and water distribution in the membrane, current density distribution along the channel and performance of PEMFC. Effect of liquid water on the transport in the two-phase region of cathode diffusion layer was considered. Water transport in the membrane by electro-osmosis drag, diffusion and convection were combined in this model. The model predicts that the dry reactant gases can be well internally humidified and maintain high performance when PEMFC is operated in the counterflow mode without external humidification. Counterflow mode does not show any advantageous while the reactant gases are high humidified or saturated. Compared to the coflow mode, counterflow mode improves the current density distribution with dry or low humidity gases. The higher the anode is humidified, the more water will migrate from anode to cathode. The modeling results compare very well with experimental results. (C) 2003 Elsevier B.V All rights reserved.
关键词[WOS]: MEMBRANE FUEL-CELLS ;  POLYMER-ELECTROLYTE ;  WATER TRANSPORT ;  MANAGEMENT ;  MULTICOMPONENT ;  2-PHASE ;  CATHODE
语种: 英语
WOS记录号: WOS:000185563800001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138341
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, Fuel Cell R&D Ctr, Dalian 116023, Peoples R China

Recommended Citation:
Ge, SH,Yi, BL. A mathematical model for PEMFC in different flow modes[J]. JOURNAL OF POWER SOURCES,2003,124(1):1-11.
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