Highly active and stable (La0.24Sr0.16Ba0.6)(Co0.5Fe0.44Nb0.06)O3-delta (LSBCFN) cathodes for solid oxide fuel cells prepared by a novel mixing synthesis method

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	Highly active and stable (La0.24Sr0.16Ba0.6)(Co0.5Fe0.44Nb0.06)O3-delta (LSBCFN) cathodes for solid oxide fuel cells prepared by a novel mixing synthesis method
	Chen, Xinbing（陈新冰）; Jiang, San Ping
	2013
Source Publication	JOURNAL OF MATERIALS CHEMISTRY A
ISSN	2050-7488
Volume	1 Issue:15 Pages:CONCATENATE(Sheet1!I146,-Sheet1!J146)
Abstract	Lanthanum and/or barium strontium cobalt ferrite perovskite oxide materials are highly active cathodes for solid oxide fuel cells (SOFCs) operated at intermediate temperatures of 600-900 degrees C. However, they are vulnerable to degradation by chromium deposition and poisoning by volatile Cr species from chromia-forming metallic interconnects. Here we report the development of a new mixed ionic and electronic conductor, lanthanum strontium barium cobalt ferrite niobium perovskite, (La0.24Sr0.16Ba0.6)(Co0.5Fe0.44Nb0.06)O3-delta (LSBCFN), prepared by a novel direct mixing synthesis of (La0.6Sr0.4)(Co0.2Fe0.8)O3-delta (LSCF) and Ba(Co0.7Fe0.2Nb0.1)O3-delta (BSCN). The electrical conductivity of LSBCFN is 124 S cm(-1) at 600 degrees C, which is significantly higher than 11 S cm(-1) measured on BSCN at the same temperature. The new LSBCFN cathode which combines the structural stability and activity of BCFN and the high conductivity of LSCF not only exhibits better electrochemical activity for the O-2 reduction reaction than either LSCF or BCFN in the temperature range of 600-900 degrees C, but most importantly, it shows excellent stability and tolerance toward chromium deposition and poisoning under SOFC operation conditions. A semi-quantitative analysis indicates that the Cr deposition at the electrode is closely related to the surface segregation of Sr and Ba.
Indexed By	SCI
Language	英语
Funding Project	应物所项目组
WOS ID	WOS:000316282800034
Citation statistics
Document Type	期刊论文
Identifier	http://ir.sinap.ac.cn/handle/331007/13620
Collection	中科院上海应用物理研究所2011-2020年
Recommended Citation GB/T 7714	Chen, Xinbing,Jiang, San Ping. Highly active and stable (La0.24Sr0.16Ba0.6)(Co0.5Fe0.44Nb0.06)O3-delta (LSBCFN) cathodes for solid oxide fuel cells prepared by a novel mixing synthesis method[J]. JOURNAL OF MATERIALS CHEMISTRY A,2013,1(15):CONCATENATE(Sheet1!I146,-Sheet1!J146).
APA	Chen, Xinbing,&Jiang, San Ping.(2013).Highly active and stable (La0.24Sr0.16Ba0.6)(Co0.5Fe0.44Nb0.06)O3-delta (LSBCFN) cathodes for solid oxide fuel cells prepared by a novel mixing synthesis method.JOURNAL OF MATERIALS CHEMISTRY A,1(15),CONCATENATE(Sheet1!I146,-Sheet1!J146).
MLA	Chen, Xinbing,et al."Highly active and stable (La0.24Sr0.16Ba0.6)(Co0.5Fe0.44Nb0.06)O3-delta (LSBCFN) cathodes for solid oxide fuel cells prepared by a novel mixing synthesis method".JOURNAL OF MATERIALS CHEMISTRY A 1.15(2013):CONCATENATE(Sheet1!I146,-Sheet1!J146).

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