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学科主题: 物理化学
题名: Stability of manganese-oxide-modified lanthanum strontium cobaltite in the presence of chromia
作者: Ou, Ding Rong1;  Cheng, Mojie1
通讯作者: 区定容
关键词: Solid oxide fuel cells ;  Perovskite ;  Chromia ;  Stability ;  Solid-state reactions
刊名: JOURNAL OF POWER SOURCES
发表日期: 2014-12-25
DOI: 10.1016/j.jpowsour.2014.08.077
卷: 272, 期:1, 页:513-517
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: In order to restrain the decomposition and conductivity degradation of perovskite-type conductive material in the presence of chromia, manganese oxide modification of lanthanum strontium cobaltite has been studied. La0.7Sr0.3CoO3-delta (LSC) and MnO2-modified LSC coatings are applied onto Ni-Cr alloy and exposed to long-term oxidation text to examine their chemical stability. In a LSC coating, chromium species migrating from the Ni-Cr alloy could induce the decomposition of LSC and produce SrCrO4 and Co-Cr spinel oxides. In contrast, in the MnO2-modified LSC, Sr is stable and the low-conductivity phase SrCrO4 phase is rarely seen even the coated alloy has gone through 1000 h of oxidation tests at 800 degrees C. It highlights that MnO2 modification could greatly improve the stability of LSC under Cr-rich conditions. The study of solid state reactions reveals that the influence of MnO2 is mainly due to the reaction between MnO2 and LSC, instead of the direct reaction between MnO2 and chromium oxides. (C) 2014 Elsevier B.V. All rights reserved.
关键词[WOS]: SOFC CATHODES ;  FUEL-CELLS ;  CR ;  LANI0.6FE0.4O3 ;  DEPOSITION ;  LAYERS
语种: 英语
WOS记录号: WOS:000344208700064
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/143993
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.Chinese Acad Sci, Dalian Inst Chem Phys, Div Fuel Cells & Battery, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China

Recommended Citation:
Ou, Ding Rong,Cheng, Mojie. Stability of manganese-oxide-modified lanthanum strontium cobaltite in the presence of chromia[J]. JOURNAL OF POWER SOURCES,2014,272(1):513-517.
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