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	Effects of flow channel geometry on cell performance for PEM fuel cells with parallel and interdigitated flow fields
	Wang, Xiao-Dong ; Duan, Yuan-Yuan ; Yan, Wei-Mon ; Peng, Xiao-Feng
	2010-05-11 ; 2010-05-11
关键词	proton exchange membrane fuel cell flow field design flow channel aspect ratio flow channel cross-sectional area LOCAL TRANSPORT PHENOMENA REACTANT GAS-TRANSPORT POLYMER-ELECTROLYTE MATHEMATICAL-MODEL DESIGN WATER RIB CONVECTION MANAGEMENT HUMIDITY Electrochemistry
中文摘要	A 3D numerical model was developed to explore the effects of the cathode flow channel configuration on the local transport phenomena and cell performance for parallel and interdigitated flow fields in proton exchange membrane (PEM) fuel cells. The effect of liquid water formation on the reactant transport is taken into account in the model. For operating voltages greater than 0.7 V, the electrochemical reaction rates are low with a small amount of oxygen consumption and liquid water production, and all cell designs provide sufficient oxygen for the electrochemical reactions. Thus, the flow channel aspect ratio and the flow channel cross-sectional area have little effect on the cell performance. For operating voltages lower than 0.7 V, as the operating voltage decreases the electrochemical reaction rates gradually increase with a large amount of oxygen consumption and liquid water production, so the cell performance is strongly dependent on the flow field design. For the parallel flow field design, lower flow channel aspect ratios and flow channel cross-sectional area areas improve liquid water removal, thus, decreasing both improves cell performance. However, the interdigitated design has an optimal aspect ratio of 1.00 and an optimal cross-sectional area of 1.000 mm x 1.000 mm. (c) 2008 Elsevier Ltd. All rights reserved.
语种	英语 ; 英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD ; OXFORD ; THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/25876]
专题	清华大学
推荐引用方式 GB/T 7714	Wang, Xiao-Dong,Duan, Yuan-Yuan,Yan, Wei-Mon,et al. Effects of flow channel geometry on cell performance for PEM fuel cells with parallel and interdigitated flow fields[J],2010, 2010.
APA	Wang, Xiao-Dong,Duan, Yuan-Yuan,Yan, Wei-Mon,&Peng, Xiao-Feng.(2010).Effects of flow channel geometry on cell performance for PEM fuel cells with parallel and interdigitated flow fields..
MLA	Wang, Xiao-Dong,et al."Effects of flow channel geometry on cell performance for PEM fuel cells with parallel and interdigitated flow fields".(2010).

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