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题名: Redox cycling of Ni-YSZ anode investigated by TPR technique
作者: Zhang, Y;  Liu, B;  Tu, BF;  Dong, YL;  Cheng, MJ
通讯作者: 程谟杰
关键词: anode ;  Ni-YSZ cermet ;  TPR ;  redox cycling ;  solid oxide fuel cell
刊名: SOLID STATE IONICS
发表日期: 2005-09-01
DOI: 10.1016/j.ssi.2005.06.016
卷: 176, 期:29-30, 页:2193-2199
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]: Chemistry, Physical ;  Physics, Condensed Matter
研究领域[WOS]: Chemistry ;  Physics
英文摘要: Effect of redox cycling on a Ni-YSZ anode prepared from 50 wt.% NiO and 50 wt.% YSZ was investigated by using temperature-programmed reduction (TPR), XRD and SEM techniques. XRD results showed that NiO was formed during re-oxidation. Both the XRD and TPR results depicted that the conversion of nickel to NiO depended on the re-oxidation temperature. The oxidation of Ni to NiO occurred quickly in the initial several minutes and then reached a quasi equilibrium. The TPR profiles tracing the redox cycling showed that it brought continuous changes in the NiO micro-structure at 800 degrees C, whereas at 600 degrees C it had only little effects on the reduction of NiO. Re-oxidation resulted in the formation of spongy aggregates of NiO crystallites. Redox cycling at 800 degrees C led to a continuous decrease in the primary crystallite size of NiO and a high dispersion of the Ni particles. A continuous expansion of the slice sample was observed in both of the oxidized and reduced states during the redox cycling at 800 degrees C, whereas this process did not occur during the redox cycling at 600 degrees C. (c) 2005 Elsevier B.V All rights reserved.
关键词[WOS]: YTTRIA-STABILIZED ZIRCONIA ;  TEMPERATURE-PROGRAMMED-REDUCTION ;  OXIDE FUEL-CELLS ;  SOFC ANODES ;  CATALYSTS ;  OXIDATION ;  REACTIVITY ;  COMPOSITE ;  METHANE
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000232289500002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/93277
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, Lab New Energy Resources, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Zhang, Y,Liu, B,Tu, BF,et al. Redox cycling of Ni-YSZ anode investigated by TPR technique[J]. SOLID STATE IONICS,2005,176(29-30):2193-2199.
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