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Citation: PENG Cheng, JIANG Kai, LI Wu-Ju, WANG Lin, WANG Hong-Yan, LIANG Hong-Wei, MENG Jian. Sol-gel Synthesis and Properties of Ce_1-xCa_xO_2-x Solid Solutions[J]. Chinese Journal of Applied Chemistry, ;2001, 18(6): 428-431. shu

Sol-gel Synthesis and Properties of Ce_1-xCa_xO_2-x Solid Solutions

1.
a College of Chemistry and Environmental Science, Henan Normal University, Key Laboratory of Environmental Science and Technology He'nan Provincal High Colleges, Xingxiang;
2.
b Key Laboratory of Rare Earth Chemistry and Physics,Changchun Institute of Applied Chemistry, Chinese Academy of Sciences,Changchun 130022

Received Date: 1 September 2000
Available Online: 2 January 2001
Fund Project: 国家重点基础研究发展规划项目(G1998061311) (G1998061311)国家自然科学基金(29831010,59802011) (29831010,59802011)河南省自然科学基金(004030300)资助课题 (004030300)

A series of solid electrolytes, Ce_1-xCa_xO_2-x(x=0~0.35), were prepared by sol-gel method. The relation of the crystal structure with the content of CaO was systematically investigated. XRD spectra showed that a pure fluorite phase was formed at 160℃. No phase was observed from room temperature to 800℃. The synthesis temperature in sol-gel method was significantly lower than in the traditional ceramic method and also lower than in the hydrothermal synthesis method. The purity of the product prepared by the sol-gel method is higher with the grain size uniformly smaller. They were easily sintered into highly dense ceramic pellets at 1300℃. XPS showed that the oxygen vacancy increased obviously by doping CaO, resulting in the increase of the oxygen ionic transport number and conductivity. Therefore, the performance of ceria-based solid electrolyte was improved.
- Ce_1-xCa_xO_2-x,
- solid electrolyte,
- sol-gel method,
- oxideionic conductor
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沈阳化工大学材料科学与工程学院沈阳 110142

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Sol-gel Synthesis and Properties of Ce1-xCaxO2-x Solid Solutions

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通讯作者: 陈斌, bchen63@163.com

Sol-gel Synthesis and Properties of Ce_1-xCa_xO_2-x Solid Solutions