TG-DTA study of mixed conductor Sr4(Fe1-xCox)6O13±δ in air and argon

被引：8

作者：

Tsuchida, T ^{[1
]}

Kan, T ^{[1
]}

机构：

[1] Hokkaido Univ, Grad Sch Engn, Div Mat Sci & Engn, Kita Ku, Sapporo, Hokkaido 0608628, Japan

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2001年 / 21卷 / 04期

关键词：

batteries; electrical conductivity; mixed conductor; perovskites; powders-solid stale reaction; Sr-4(Fe; Co)(6)O-13;

D O I：

10.1016/S0955-2219(00)00215-6

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The synthesis, structure, electrical conductivity and TG-DTA behavior in air and argon of the Sr-4(Fe1-xCOx)(6)O13+/-delta samples with x = 0-0.417 were investigated. While the Sr-4(Fe1-xCOx)(6)O13+/-delta solid solutions being isostructural with Sr4Fe6O13 were formed for 0<x<less than or equal to>0.25, the Sr-4(Fe1-xCox)(6)O13+/-delta phase and the perovskite phase Sr(Fe1-yCoy)O-3 coexisted for x = 0.333 and the perovskite phases of Sr(Fe1-yCoy)O-3 and SrCoO2.8 were formed along with a trace of CoO for x = 0.417. The total conductivity increased with increasing Co substitution and temperature. The relationship between the weight changes observed in TG experiments and the total conductivity is reported. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：555 / 560

页数：6

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