Oxygen-vacancy concentration in A2MgMoO6-δ double-perovskite oxides

被引：31

作者：

Matsuda, Y. ^{[2
]}

Karppinen, M. ^{[1
,2
]}

Yamazaki, Y. ^{[3
]}

Yamauchi, H. ^{[1
,2
]}

机构：

[1] Helsinki Univ Technol, Inorgan Chem Lab, Dept Chem, FI-02015 Helsinki, Finland

[2] Tokyo Inst Technol, Mat & Struct Lab, Yokohama, Kanagawa 2268503, Japan

[3] Tokyo Inst Technol, Dept Innovat & Engineered Mat, Yokohama, Kanagawa 2268502, Japan

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2009年 / 182卷 / 07期

基金：

芬兰科学院;

关键词：

Double perovskite; Oxygen content; Chemical substitution; Coulometric titration; SOFC anode material; FUEL-CELLS; PHASE-STABILITY; ANODE MATERIALS; SR2MGMOO6-DELTA; ORDER;

D O I：

10.1016/j.jssc.2009.04.016

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Accurate oxygen-content analysis by means of a coulometric redox titration method specially devised for the purpose shows that as-synthesized (in 5% H-2/Ar) samples of the recently reported novel solid oxide fuel cells anode material Sr2MgMoO6-delta contain oxygen vacancies with a concentration of delta approximate to 0.05. Oxygen contents and the resultant Mo-valence values are also analyzed for various A(2)MgMoO(6-delta) samples in order to reveal both the isovalent and aliovalent A-site cation substitution effects. (C) 2009 Elsevier Inc. All rights reserved.

引用

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页码：1713 / 1716

页数：4

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