Dielectric properties of proton conductor BaCe_<0.9>Y_<0.1>O_<3-δ>
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概要
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Frequency dependences of the dielectric constant (ε_r') were investigated for the perovskite-type oxide BaCe_<0.9>Y_<0.1>O_<3-δ>, which is a typical proton conductor. Numerical calculation of the frequency dependence of ε_r' clarified that the large ε_r' originated from the superimposition of both electrolyte-electrode interfacial and Debye-type polarizations. The Debye-type polarizations which originated from the dopant-vacancy associates, (Y_<Ce>'-V_o) were depressed under wet Ar atmosphere. Therefore, it can be speculated that the proton may occur according to the following equilibrium equation: H_2O+V_o⇔2H+O_o^×.
- 社団法人日本セラミックス協会の論文
- 2008-02-01
著者
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KAKINUMA Katsuyoshi
Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University
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YAMAMURA Hiroshi
Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University
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Yamamura Hiroshi
Department Of Material And Life Chemistry Faculty Of Engineering Kanagawa University
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KATOH Yorinobu
Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University
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YOKOTE Takenori
Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University
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Katoh Yorinobu
Department Of Material And Life Chemistry Faculty Of Engineering Kanagawa University
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Yokote Takenori
Department Of Material And Life Chemistry Faculty Of Engineering Kanagawa University
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Kakinuma Katsuyoshi
Department Of Material And Life Chemistry Faculty Of Engineering Kanagawa University
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