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题名: Investigation of LSM1.1-ScSZ composite cathodes for anode-supported solid oxide fuel cells
作者: Wang, ZW;  Cheng, MJ;  Dong, YL;  Zhang, M;  Zhang, HM
通讯作者: 程谟杰
关键词: ScSZ ;  LSM1.1 ;  composite cathode ;  anode-supported SOFCs
刊名: SOLID STATE IONICS
发表日期: 2005-11-15
DOI: 10.1016/j.ssi.2005.07.013
卷: 176, 期:35-36, 页:2555-2561
收录类别: SCI
文章类型: Article
部门归属: 3
项目归属: 302,303
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical ;  Physics, Condensed Matter
研究领域[WOS]: Chemistry ;  Physics
英文摘要: La0.8Sr0.2Mn1.1O3 (LSM1.1)-10 mol% Sc2O3-Stabilized ZrO2 co-doped with CeO2 (ScSZ) composite cathodes were investigated for anode-supported solid oxide fuel cells (SOFCs) with thin 8 mol% Y2O3-stabilized ZrO2 (YSZ) electrolyte. X-ray diffraction (XRD) results indicated that the ScSZ electrolytes displayed good chemical compatibility with the nonstoichiometric LSM1.1 against co-firing at 1300 degrees C. Increasing the CeO2 content in the ScSZ electrolytes dramatically suppressed the electrode polarization resistance, which may be related to the improved surface oxygen exchange or the enlarged active area of cathode. The 5Ce10ScZr was the best electrolyte for the composite cathodes, which caused a small ohmic resistance decrease and the reduced polarization resistance and brought about the highest cell performance. The cell performances at lower temperatures seemed to rely on the electrode polarization resistance more seriously, than the ohmic resistance. Compared with the cell impedance at higher temperatures, the higher the 5Ce10ScZr proportion in the composite cathodes, the smaller the increment of the charge transfer resistance at lower temperatures. The anode-supported SOFC with the LSM1.1-5Ce10ScZr (60:40) composite cathode achieved the maximum power densities of 0.82 W/cm(2) at 650 degrees C and 2.24 W/cm(2) at 800 degrees C, respectively. (c) 2005 Elsevier B.V. All rights reserved.
关键词[WOS]: ELECTROCHEMICAL PERFORMANCE ;  POLARIZATION BEHAVIOR ;  CURRENT COLLECTOR ;  O-2 REDUCTION ;  SOFC ;  ELECTROLYTES ;  INTERFACE ;  CONDUCTIVITY ;  ELECTRODES ;  IMPEDANCE
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000233260500004
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/93275
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 100039, Peoples R China

Recommended Citation:
Wang, ZW,Cheng, MJ,Dong, YL,et al. Investigation of LSM1.1-ScSZ composite cathodes for anode-supported solid oxide fuel cells[J]. SOLID STATE IONICS,2005,176(35-36):2555-2561.
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