Possible proton conduction in Ce0.9Gd0.1O2-δ nanoceramics

被引：45
作者：
Ruiz-Trejo, Enrique [1 ,2 ]
Kilner, John A. [1 ]
机构：
[1] Univ London Imperial Coll Sci Technol & Med, Dept Mat, London SW7 2AZ, England
[2] Univ Nacl Autonoma Mexico, Fac Quim, Dept Fis & Quim Teor, Mexico City 04510, DF, Mexico
来源：
JOURNAL OF APPLIED ELECTROCHEMISTRY | 2009年 / 39卷 / 04期
关键词：
Nanoceramics; Gd-doped ceria; Proton conduction; Grain boundary; DOPED CERIA CERAMICS; ELECTRICAL-CONDUCTIVITY; NANOCRYSTALLINE CERIA; IONIC-CONDUCTIVITY; GRAIN-SIZE; THIN-FILMS; MICROSTRUCTURE; ELECTROLYTES; OXIDE; DIFFUSION;
D O I：
10.1007/s10800-008-9713-1
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Dense samples of Ce0.9Gd0.1O2-delta with grain sizes in the range 91-252 nm were prepared and their electrical properties studied by impedance spectroscopy. It was found that the bulk conductivity is not affected by grain size or atmosphere and that small grain sizes lead to a larger total resistance of the material. The most striking result corresponds to a sample sintered in wet air that exhibited electrical characteristics that hint clearly at the presence of proton conduction at temperatures below 200 A degrees C.
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页码：523 / 528
页数：6
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