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题名: Electrochemical performance of mixed ionic-electronic conducting oxides as anodes for solid oxide fuel cell
作者: Wang, SZ;  Jiang, Y;  Zhang, YH;  Li, WZ;  Yan, JW;  Lu, ZG
关键词: mixed ionic-electronic conducting oxides ;  anodes ;  methane oxidation ;  solid oxide fuel cell
刊名: SOLID STATE IONICS
发表日期: 1999-05-01
卷: 120, 期:1-4, 页:75-84
收录类别: SCI
文章类型: Article
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: Mixed ionic-electronic conducting (MIEC) oxides, SrFeCo0.5Ox, SrCo0.8Fe0.2O3-delta and La0.6Sr0.4Fe0.8Co0.2O3-delta have been synthesized and prepared on yttria-stabilized zirconia as anodes for solid oxide fuel cells. Power output measurements show that the anodes composed of such kinds of oxides exhibit modest electrochemical activities to both H-2 and CH4 fuels, giving maximum power densities of around 0.1 W/cm(2) at 950 degrees C. Polarization and AC impedance measurements found that large activation overpotentials and ohmic resistance drops were the main causes for the relative inferior performance to the Ni-YSZ anode. While interlayered with an Ni-YSZ anode, a significant improvement in the electrochemical performance was observed. in particular, for the SrFeCo0.5Ox oxide interlayered Ni-YSZ anode, the maximum power output reaches 0.25 W/cm2 on CH,, exceeding those of both SrFeCo0.5Ox and the Ni-YSZ, as anodes alone. A synergetic effect of SrFeCo0.5Ox and the Ni-YSZ has been observed. Future work is needed to examine the long-term stability of MIEC oxide electrodes under a very reducing environment. (C) 1999 Elsevier Science B.V. All rights reserved.
关键词[WOS]: YTTRIA-STABILIZED ZIRCONIA ;  PARTIAL OXIDATION ;  OXYGEN ELECTRODES ;  METHANE ;  SRFECO0.5OX ;  TRANSPORT ;  KINETICS ;  SYNGAS
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000080091800009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/86151
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

Recommended Citation:
Wang, SZ,Jiang, Y,Zhang, YH,et al. Electrochemical performance of mixed ionic-electronic conducting oxides as anodes for solid oxide fuel cell[J]. SOLID STATE IONICS,1999,120(1-4):75-84.
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