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题名: Structure and properties of layered-perovskite LaBa1-xCo2O5+delta (x=0-0.15) as intermediate-temperature cathode material
作者: Pang, S. L.1, 2;  Jiang, X. N.1;  Li, X. N.1;  Xu, H. X.1;  Jiang, L.3;  Xu, Q. L.1;  Shi, Y. C.1;  Zhang, Q. Y.1
关键词: Ba-deficiency ;  Layered-perovskite oxide ;  Structure ;  Electrical conductivity ;  Electrochemical performance
刊名: JOURNAL OF POWER SOURCES
发表日期: 2013-10-15
DOI: 10.1016/j.jpowsour.2013.04.005
卷: 240, 页:54-59
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Electrochemistry ;  Energy & Fuels
研究领域[WOS]: Electrochemistry ;  Energy & Fuels
英文摘要: Phase structure, structure stability, electrical properties and catalytic activity for oxygen reduction reaction of the Ba-deficient layered-perovskite oxides LaBa1-xCo2O5+delta (LB1-xCO, x = 0.00-0.15) have been studied to determine their viability as cathode material of intermediate-temperature solid oxide fuel cells (IT-SOFCs). LB1-xCO had tetragonal layered-perovskite structure when calcined at 850 degrees C-1050 degrees C in air but transformed into cubic structure at higher temperatures. The LB1-xCO oxide exhibited lower electrical conductivities and decreased area-specific resistances (ASRs) on the Ce0.9Gd0.1O1.95 (GDC) electrolyte with higher Ba-deficiency content. Among the samples, the LB0.90CO (x = 0.10) oxide exhibited the best electrochemical performance with ASR values of 0.118 Omega cm(2) at 600 degrees C and 0.023 Omega cm(2) at 700 degrees C respectively, similar to 40% lower than the results of the parent oxide (x = 0), demonstrating its promising application as cathode materials of IT-SOFCs. (C) 2013 Elsevier B.V. All rights reserved.
关键词[WOS]: OXIDE FUEL-CELLS ;  OXYGEN-ION DIFFUSION ;  ELECTROCHEMICAL PERFORMANCE ;  TRANSPORT-PROPERTIES ;  LNBACO(2)O(5+DELTA) ;  PRBACO2O5+DELTA ;  SOFCS
语种: 英语
WOS记录号: WOS:000321803700009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/137844
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Dalian Univ Technol, Key Lab Mat Modificat Laser Ion & Electron Beams, Minist Educ, Dalian 116024, Peoples R China
2.Jiangsu Univ, Inst Adv Mat, Sch Mat Sci & Engn, Zhenjiang 212013, Jiangsu, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem & Phys, Dalian 116023, Peoples R China

Recommended Citation:
Pang, S. L.,Jiang, X. N.,Li, X. N.,et al. Structure and properties of layered-perovskite LaBa1-xCo2O5+delta (x=0-0.15) as intermediate-temperature cathode material[J]. JOURNAL OF POWER SOURCES,2013,240:54-59.
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