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题名: La0.4Ce0.6O1.8-La0.8Sr0.2MnO3-8 mol% yttria-stabilized zirconia composite cathode for anode-supported solid oxide fuel cells
作者: Zhang, Min1, 2;  Yang, Min1, 2;  Liu, Bin1, 2;  Hou, Zhifang1;  Dong, Yonglai1;  Cheng, Mojie1
关键词: composite cathode ;  La0.4Ce0.6O1.8 ;  La0.8Sr0.2MnO3 ;  solid oxide fuel cells
刊名: JOURNAL OF POWER SOURCES
发表日期: 2008-01-10
DOI: 10.1016/j.jpowsour.2007.10.012
卷: 175, 期:2, 页:739-748
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: The composite cathodes of La0.4Ce0.6O1.8 (LDC)-La0.8Sr0.2MnO3 (LSM)-8 mol% yttria-stabilized zirconia (YSZ) with different LDC contents were investigated for anode-supported solid oxide fuel cells with thin film YSZ electrolyte. The oxygen temperature-programmed desorption profiles of the LDC-LSM-YSZ composites indicate that the addition of LDC increases surface oxygen vacancies. The cell performance was improved largely after the addition of LDC, and the best cell performance was achieved on the cells with the composite cathodes containing 10 wt% or 15 wt% LDC. The electrode polarization resistance was reduced significantly after the addition of LDC. At 800 degrees C and 650 degrees C, the polarization resistances of the cell with a 10 wt% LDC composite cathode are 70% and 40% of those of the cell with a LSM-YSZ composite cathode, respectively. The impedance spectra show that the processes associated with the dissociative adsorption of oxygen and diffusion of oxygen intermediates and/or oxygen ions on LSM surface and transfer of oxygen species at triple phase boundaries are accelerated after the addition of LDC. (C) 2007 Elsevier B.V. All rights reserved.
关键词[WOS]: PEROVSKITE-TYPE OXIDES ;  TEMPERATURE SOFCS ;  METHANE OXIDATION ;  HIGH-PERFORMANCE ;  ELECTROLYTE ;  NONSTOICHIOMETRY ;  LACO1-XFEXO3 ;  INTERLAYER ;  EXCHANGE
语种: 英语
WOS记录号: WOS:000252634300005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140926
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 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

Recommended Citation:
Zhang, Min,Yang, Min,Liu, Bin,et al. La0.4Ce0.6O1.8-La0.8Sr0.2MnO3-8 mol% yttria-stabilized zirconia composite cathode for anode-supported solid oxide fuel cells[J]. JOURNAL OF POWER SOURCES,2008,175(2):739-748.
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