Synthesis, electrical and electrochemical properties of Ba0.5Sr0.5Zn0.2Fe0.8O3-delta perovskite oxide for IT-SOFC cathode

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	Synthesis, electrical and electrochemical properties of Ba0.5Sr0.5Zn0.2Fe0.8O3-delta perovskite oxide for IT-SOFC cathode
	B. Wei ; Z. Lu ; X. Q. Huang ; M. L. Liu ; N. Li ; W. H. Su
刊名	Journal of Power Sources
	2008
卷号	176 期号:1 页码:40916
关键词	solid oxide fuel cells cathode Ba0.5Sr0.5Zn0.2Fe0.8O3-delta electrical conductivity electrochemical performance intermediate temperature sofc fuel-cells composite cathodes performance electrolytes ba0.5sr0.5co0.8fe0.2o3-delta 500-degrees-c fabrication stability anode
ISSN号	0378-7753
中文摘要	The Ba0.5Sr0.5Zn0.2Fe0.8O3-delta (BSZF) complex oxide with cubic perovskite structure was synthesized and examined as anew cobalt-free cathode for intermediate-temperature solid oxide fuel cells (IT-SOFCs). The electrical conductivity was relatively low with a peak value of 9.4 S cm(-1) at about 590 degrees C, which was mainly caused by the high concentration of oxygen vacancy and the doping of bivalent zinc in B-sites. At 650 degrees C and under open circuit condition, symmetrical BSZF cathode on Sm-doped ceria (SDC) electrolyte showed polarization resistances (R-p) of 0.48 Omega cm(2) and 0.35 Omega cm(2) in air and oxygen, respectively. The dependence of R-P with oxygen partial pressure indicated that the rate-limiting step for oxygen reduction was oxygen adsorption/desorption kinetics. Using B SZF as the cathode, the wet hydrogen fueled Ni + SDC anode-supported single cell exhibited peak power densities of 392 mW cm(-2) and 626 mW cm(-2) at 650 degrees C when stationary air and oxygen flux were used as oxidants, respectively. (c) 2007 Elsevier B.V. All rights reserved.
原文出处	://WOS:000252823400001
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/33179]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	B. Wei,Z. Lu,X. Q. Huang,et al. Synthesis, electrical and electrochemical properties of Ba0.5Sr0.5Zn0.2Fe0.8O3-delta perovskite oxide for IT-SOFC cathode[J]. Journal of Power Sources,2008,176(1):40916.
APA	B. Wei,Z. Lu,X. Q. Huang,M. L. Liu,N. Li,&W. H. Su.(2008).Synthesis, electrical and electrochemical properties of Ba0.5Sr0.5Zn0.2Fe0.8O3-delta perovskite oxide for IT-SOFC cathode.Journal of Power Sources,176(1),40916.
MLA	B. Wei,et al."Synthesis, electrical and electrochemical properties of Ba0.5Sr0.5Zn0.2Fe0.8O3-delta perovskite oxide for IT-SOFC cathode".Journal of Power Sources 176.1(2008):40916.