Effect of partial substitution of In by Zr, Ti and Hf on protonic conductivity of BaInO2.5

被引：21

作者：

Hideshima, Naoki ^{[1
]}

Hashizume, Kenichi ^{[1
]}

机构：

[1] Kyushu Univ, Interdisciplinary Grad Sch Engn Sci, Dept Adv Energy & Engn Sci, Fukuoka 8128581, Japan

来源：

SOLID STATE IONICS | 2010年 / 181卷 / 37-38期

关键词：

Protonic conduction; BaInO2.5; ac impedance method; Rietveld analysis; Free volume; ELECTRICAL-PROPERTIES; DOPED BA2IN2O5; PEROVSKITE; SYSTEMS; OXYGEN; BA2IN2O5-RECTANGLE; GA;

D O I：

10.1016/j.ssi.2010.09.029

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of partial substitution of In by Zr, Ti and Hf in BaInO2.5 has been studied in order to improve its protonic conductivity. The isotope effect of H and Don the protonic conductivity has also been studied, which indicates that hydrogen diffusion is a rate-limiting process for the protonic conduction. Although the contents of substituting elements do not correlate well with the variation of the protonic conductivity, a 'free volume', which is usually introduced to interpret changes of the conductivity of oxide ion conductors, can do well. This suggests the free volume could be used as a figure of merit to improve the protonic conductivity in BaInO2.5 based oxides. (C) 2010 Published by Elsevier By.

引用

页码：1659 / 1664

页数：6

共 24 条

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