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题名: High- and low- temperature behaviors of La0.6Sr0.4Co0.2Fe0.8O3-delta cathode operating under CO2/H2O-containing atmosphere
作者: Zhao, Zhe1, 2;  Liu, Li1, 2;  Zhang, Xiaomin1, 2;  Wu, Weiming1, 2;  Tu, Baofeng1;  Cui, Daan1;  Ou, Dingrong1;  Cheng, Mojie1
关键词: Cathode ;  Electrochemical stability ;  Chemical stability ;  Carbon dioxide ;  Water vapor
刊名: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
发表日期: 2013-11-22
DOI: 10.1016/j.ijhydene.2013.09.089
卷: 38, 期:35, 页:15361-15370
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Electrochemistry ;  Energy & Fuels
研究领域[WOS]: Chemistry ;  Electrochemistry ;  Energy & Fuels
英文摘要: High- and low- temperature behaviors of La0.6Sr0.4Co0 Fe-2(0) O-8(3-delta) (LSCF) cathode for solid oxide fuel cells operating under CO2/H2O-containing atmosphere are investigated. LSCF shows different stability against CO2 and H2O at high and low temperature. LSCF has excellent electrochemical performance and high stability against the corrosion of CO2 and H2O at 750 degrees C due to weak reactivity of LSCF with CO2. LSCF shows a serious degradation at 600 degrees C under operation with O-2-CO2(2.83%)-H2O(2.64%), which is ascribed to the impeded oxygen activation and oxygen surface diffusion by surface carbonates and SrCO3 phases on LSCF surface. Under CO2(5%)-H2O(2.81%)-He, LSCF reacts with CO2 to yield SrCO3 phases in 400-680 degrees C, and H2O aggravates the chemical reaction between CO2 and LSCF. Taking into account of SrCO3 phase formation on LSCF, LSCF cathode is stable under operation with O-2-CO2(2.83%)-H2O(2.64%) in 680-800 degrees C, whereas it is unstable below 680 degrees C. LSCF can be subject to degradation caused by CO2 and H2O in air during long-term operation below 680 degrees C. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
关键词[WOS]: OXIDE FUEL-CELLS ;  ELECTROCHEMICAL PERFORMANCE ;  PEROVSKITE OXIDES ;  STABILITY ;  IMPEDANCE ;  CO2 ;  DEGRADATION ;  ELECTRODE ;  MECHANISM ;  SOFC
语种: 英语
WOS记录号: WOS:000328006500045
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/137629
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, Dalian Natl Lab Clean Energy, Div Fuel Cells, Dalian 116023, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Zhao, Zhe,Liu, Li,Zhang, Xiaomin,et al. High- and low- temperature behaviors of La0.6Sr0.4Co0.2Fe0.8O3-delta cathode operating under CO2/H2O-containing atmosphere[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2013,38(35):15361-15370.
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