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题名: A bi-layered composite cathode of La0.8Sr0.2MnO3-YSZ and La0.8Sr0.2MnO3-La0.4Ce0.6O1.8 for IT-SOFCs
作者: Zhang, Min1, 2;  Yang, Min1, 2;  Hou, Zhifang1;  Dong, Yonglai1;  Cheng, Mojie1
通讯作者: 程谟杰
关键词: bi-layered composite cathode ;  La0.8Sr0.2MnO3 ;  La0.4Ce0.6O1.8 ;  YSZ ;  solid oxide fuel cells
刊名: ELECTROCHIMICA ACTA
发表日期: 2008-06-01
DOI: 10.1016/j.electacta.2008.01.095
卷: 53, 期:15, 页:4998-5006
收录类别: SCI
文章类型: Article
部门归属: 3
项目归属: 302
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Electrochemistry
研究领域[WOS]: Electrochemistry
英文摘要: A bi-layered composite cathode of La0.8Sr0.2MnO3 (LSM)-YSZ and LSM-La0.4Ce0.6O1.8 (LDC) was fabricated for anode-supported solid oxide fuel cells with a thin YSZ electrolyte film. The cell with the bi-layered composite cathode displayed better performance than the cell with the corresponding single-layered composite cathode of LSM-LDC or LSM-YSZ. At 650 degrees C, the cell with the bi-layered composite cathode gave a higher maximum power density than the cells with the single-layered LSM-LDC and LSM-YSZ composite cathodes, by 52% and 175%, respectively. The impedance spectra results show that the thin LSM-YSZ interlayer not only improves the cathode/electrolyte interface but also reduces the polarization resistance of the cathode. The activation energy for oxygen reduction on the bi-layered composite cathode is much smaller than that on LSM-YSZ composite cathode, and it is suggested that the special redox property of Ce4+/Ce3+ in LDC facilitates the oxygen reduction process on the bi-layered composite cathode. The cell with the bi-layered composite cathode operated quite stably during a 100 h run. (C) 2008 Elsevier Ltd. All rights reserved.
关键词[WOS]: OXIDE FUEL-CELLS ;  YTTRIA-STABILIZED ZIRCONIA ;  IMPEDANCE SPECTROSCOPY ;  INTERMEDIATE-TEMPERATURE ;  YSZ ELECTROLYTE ;  AC-IMPEDANCE ;  DOPED CERIA ;  PERFORMANCE ;  POLARIZATION ;  INTERLAYER
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000255706500007
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/101205
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,Hou, Zhifang,et al. A bi-layered composite cathode of La0.8Sr0.2MnO3-YSZ and La0.8Sr0.2MnO3-La0.4Ce0.6O1.8 for IT-SOFCs[J]. ELECTROCHIMICA ACTA,2008,53(15):4998-5006.
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