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题名: Interaction of La(0.8)Sr(0.2)MnO(3) interlayer with Gd(0.1)Ce(0.9)O(1.95) electrolyte membrane and Ba(0.5)Sr(0.5)Co(0.8)Fe(0.2)O(3-delta) cathode in low-temperature solid oxide fuel cells
作者: Yang, Min1, 2;  Zhang, Min1, 2;  Yan, Aiyu1, 2;  Yue, Mangling1, 2;  Hou, Zhifang1;  Dong, Yonglai1;  Cheng, Mojie1
关键词: Solid oxide fuel cells ;  Interfacial modification ;  Inter-diffusion ;  Impedance spectroscopy ;  Open-circuit voltage
刊名: JOURNAL OF POWER SOURCES
发表日期: 2008-12-01
DOI: 10.1016/j.jpowsour.2008.07.054
卷: 185, 期:2, 页:784-789
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: Low-temperature solid oxide fuel cells with a La(0.8)Sr(0.2)MnO(3) (LSM) interlayer between the Ce(0.9)Gd(0.1)O(1.95) (GDC) electrolyte membrane (20 mu m) and the Ba(0.5)Sr(0.5)Co(0.8)Fe(0.2)O(3) (BSCF)-GDC composite cathode are fabricated by sintering the BSCF-GDC composite cathodes at 900,950 and 1000 degrees C. The results of scanning electron microscopy/energy dispersive X-ray analysis (SEM/EDX) fora model LSM/BSCF bi-layer pellet suggest that Ba, Co and Fe in BSCF as well as La and Mn in LSM have diffused into their counter sides. The X-ray diffraction (XRD) results on the simulated cells also indicate the incorporation of La into the CDC electrolyte membrane and the mutual diffusion of elements between the LSM layer and the BSCF layer. Analysis of the impedance spectra and interfacial reaction activation energies shows that LSM interlayer accelerates the oxygen reduction. Considering a good cell performance and the highest open-circuit voltages (OCVs) at 600-500 degrees C, the optimum sintering temperature of BSCF-GDC composite cathode onto LSM interlayer is 900 degrees C. (C) 2008 Elsevier B.V. All rights reserved.
关键词[WOS]: ELECTRICAL-PROPERTIES ;  COMPOSITE CATHODES ;  PERFORMANCE ;  INTERFACE ;  SYSTEM ;  CERIA ;  CATHODE/ELECTROLYTE ;  LA1-XSRXCO1-YFEYO3 ;  DIFFUSION ;  IMPEDANCE
语种: 英语
WOS记录号: WOS:000261748900027
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141040
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:
Yang, Min,Zhang, Min,Yan, Aiyu,et al. Interaction of La(0.8)Sr(0.2)MnO(3) interlayer with Gd(0.1)Ce(0.9)O(1.95) electrolyte membrane and Ba(0.5)Sr(0.5)Co(0.8)Fe(0.2)O(3-delta) cathode in low-temperature solid oxide fuel cells[J]. JOURNAL OF POWER SOURCES,2008,185(2):784-789.
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