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题名: Microstructural Evolution in a CeO2-Gd2O3 System
作者: Ye, Fei1, 2;  Ou, Ding Rong3;  Mori, Toshiyuki4
关键词: transmission electron microscopy (TEM) ;  microstructure ;  ordering ;  oxygen vacancy ;  cluster ;  solid oxide fuel cell
刊名: MICROSCOPY AND MICROANALYSIS
发表日期: 2012-02-01
DOI: 10.1017/S1431927611012396
卷: 18, 期:1, 页:162-170
收录类别: SCI
文章类型: Article
类目[WOS]: Materials Science, Multidisciplinary ;  Microscopy
研究领域[WOS]: Materials Science ;  Microscopy
英文摘要: Microstructural evolution in a CeO2-Gd2O3 system at atomic and nanoscale levels with increasing Gd concentration has been comprehensively investigated by transmission electron microscopy. When the Gd concentration was increased from 10 to 80 at.%, the phase transformation from ceria with fluorite structure to solid solution with C-type structure was not a sudden change but an evolution in the sequence of clusters, domains, and precipitates with C-type structure in the fluorite-structured matrix. Moreover, the ordering of aggregated Gd cations and oxygen vacancies in these microstructural inhomogeneities developed continuously with increasing Gd concentration. This microstructural evolution can be further described based on the development of defect clusters containing Gd cations and oxygen vacancies.
关键词[WOS]: OXIDE IONIC-CONDUCTIVITY ;  GADOLINIUM-DOPED CERIA ;  SOLID ELECTROLYTES ;  CEO2 ;  SPECTROSCOPY ;  DIFFRACTION ;  SCATTERING ;  CEO2-Y2O3 ;  LA ;  SM
语种: 英语
WOS记录号: WOS:000299757100016
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142920
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.Dalian Univ Technol, Sch Mat Sci & Engn, Key Lab Mat Modificat, Dalian 116024, Liaoning, Peoples R China
2.Dalian Univ Technol, Sch Mat Sci & Engn, Key Lab Solar Energy Photovolta Liaoning Prov, Dalian 116024, Liaoning, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Fuel Cells, Dalian 116023, Liaoning, Peoples R China
4.Natl Inst Mat Sci, Innovat Ctr Nanomat Sci Environm & Energy, Tsukuba, Ibaraki 3050044, Japan

Recommended Citation:
Ye, Fei,Ou, Ding Rong,Mori, Toshiyuki. Microstructural Evolution in a CeO2-Gd2O3 System[J]. MICROSCOPY AND MICROANALYSIS,2012,18(1):162-170.
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