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题名: Preparation and structure and performance examination of double-layer LSM/LSM plus YSZ composite electrodes
作者: Lu, ZG;  Jiang, Y;  Yan, JW;  Dong, YL;  Zhang, YH
关键词: SOFC ;  composite LSM electrodes ;  double-layer electrodes ;  AC impedance
刊名: ACTA PHYSICO-CHIMICA SINICA
发表日期: 2000-10-01
DOI: 10.3866/PKU.WHXB20001014
卷: 16, 期:10, 页:941-947
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: Single layer LSM + YSZ and double layers LSM/LSM + YSZ composite electrodes with varying YSZ content in the LSM + YSZ layer have been prepared. The electrochemical properties and microstructures of the electrodes were investigated and compared. The electrochemical performance of the single layer LSM +YSZ electrodes was improved when a certain amount of YSZ was added due to the increase of the: three phase boundaries (TPB) by the addition of YSZ, while excessive YSZ addition (60%) caused a decrease in performance, because the in-phase resistance of the electrode increased so high, leading to a reduced effective electrode area. The problem was eliminated by a double-layer LSM/LSM + YSZ composite electrode, in which a pure LSM layer functioned as a current collector and reduced the in-phase resistance. As a result, both large TPB area and low ohmic resistance were assured in this kind structure. At 1223 K, the double-layer composite electrode with 50 wt. % YSZ has the lowest polarization resistance of 0.3 Omega .cm(2).
关键词[WOS]: OXIDE FUEL-CELL ;  CATHODES
语种: 英语
WOS记录号: WOS:000168532200014
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138793
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:
Lu, ZG,Jiang, Y,Yan, JW,et al. Preparation and structure and performance examination of double-layer LSM/LSM plus YSZ composite electrodes[J]. ACTA PHYSICO-CHIMICA SINICA,2000,16(10):941-947.
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