Relation between electrical conductivity and chemical stability of BaCeO3-based proton conductors with different trivalent dopants

被引：183

作者：

Matsumoto, Hiroshige ^{[1
]}

Kawasaki, Yuya

Ito, Naoki

Enoki, Makiko

Ishihara, Tatsumi

机构：

[1] Kyushu Univ, Fac Engn, Dept Appl Chem, Nishi Ku, Fukuoka 8190395, Japan

[2] Kyushu Univ, Ctr Future Chem, Fukuoka 8190395, Japan

[3] Toyota Motor Co Ltd, Higashifuji Tech Ctr, Shizuoka 4101193, Japan

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2007年 / 10卷 / 04期

关键词：

D O I：

10.1149/1.2458743

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Trivalent-cation-doped BaCeO3 has fairly high protonic conductivity at intermediate temperatures. This paper deals with the effects of the kind of dopant, M in BaCe0.9M0.1O3-alpha (M = Y, Tm, Yb, Lu, In, or Sc), on the electrical (ionic) conductivity at 400 - 900 degrees C and chemical stability. It was found that the two properties are both governed by the ionic radii of the dopants and are in a trade-off relation. The electrical conductivity seems to be also affected by the electronegativity of the dopant element, i.e., the conductivity increases with increasing ionic radius and decreasing electronegativity (increasing basicity). (c) 2007 The Electrochemical Society.

引用

页码：B77 / B80

页数：4

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