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	Solid oxide fuel cell porous cathode micro modeling and performance prediction
	Shi Yi-xiang ; Cai Ning-sheng
	2010-05-11 ; 2010-05-11
关键词	Practical Experimental/ cathodes current density electrochemical electrodes ionic conductivity lanthanum compounds solid oxide fuel cells yttrium/ solid oxide fuel cell porous cathode micromodeling performance prediction SOFC cathode microstructure optimization yttrium stabilized zirconia ionic conduction electronic conduction gas transport phenomenon electrochemical processes polarization losses three-phase boundary exchange current density oxygen partial pressure porous electrode structure parameters ZrO/sub 2/-Y/sub 2/O/sub 3// A8630G Fuel cells A8245 Electrochemistry and electrophoresis B8410G Fuel cells/ ZrO2Y2O3/ss O2/ss O3/ss Y2/ss Zr/ss O/ss Y/ss
中文摘要	A micro model of a solid oxide fuel cell (SOFC) porous LSM/YSZ (Strontium-doped LaMnO/sub 3//yttrium stabilized zirconia) cathode was developed. The model coupled the intricate interdependency among the ionic conduction, electronic conduction, gas transport phenomenon and electrochemical processes. All forms of polarization losses were considered. To improve the model generalization, active three-phase boundary (TPB) was expressed as a function of electrode micro structure parameters (porosity, coordination number, contact angle, etc), and exchange current density was treated as a function of cell temperature and oxygen partial pressure. The model results showed good agreement with the published experimental data. The distribution of cell polarization, oxygen concentration was calculated and the effect of particle size, oxygen utilization, electrode thickness as well as porous electrode structure parameters was studied. The model results could provide some fundamental guidelines for SOFC cathode microstructure optimization and SOFC operation.
语种	中文 ; 中文
出版者	Chinese Soc. Electr. Eng ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/25869]
专题	清华大学
推荐引用方式 GB/T 7714	Shi Yi-xiang,Cai Ning-sheng. Solid oxide fuel cell porous cathode micro modeling and performance prediction[J],2010, 2010.
APA	Shi Yi-xiang,&Cai Ning-sheng.(2010).Solid oxide fuel cell porous cathode micro modeling and performance prediction..
MLA	Shi Yi-xiang,et al."Solid oxide fuel cell porous cathode micro modeling and performance prediction".(2010).

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