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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 PublicationJOURNAL OF MATERIALS CHEMISTRY A
ISSN2050-7488
Volume1Issue:15Pages:CONCATENATE(Sheet1!I146,-Sheet1!J146)
AbstractLanthanum 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 BySCI
Language英语
Funding Project应物所项目组
WOS IDWOS:000316282800034
Citation statistics
Cited Times:45[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/13620
Collection中科院上海应用物理研究所2011-2019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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