Synthesis of BaCeO3 and BaCe0.9Y0.1O3-δ from mixed oxalate precursors

被引：21

作者：

de Oliveira, Ana Paula Almeida

Hafsaoui, Julien

Hochepied, Jean-Francois

Berger, Marie-Helene

Thorel, Alain

机构：

[1] Ecole Mines, Ctr Energet & Procedes, Lab Colloidal Syst Ind Proc, F-75006 Paris, France

[2] Ecole Mines, Ctr Mat, F-91003 Evry, France

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2007年 / 27卷 / 13-15期

关键词：

powders-chemical preparation; perovskites; fuel cells; membranes;

D O I：

10.1016/j.jeurceramsoc.2007.02.012

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：

An oxalate precipitation route is proposed for the synthesis of BaCe1-xYxO3 (x = 0 and 0.1) after calcination at 1100 degrees C. The precipitation temperature (70 degrees C) was a determinant parameter for producing a pure perovskite phase after calcination at 1100 degrees C for 1 h. TG/DTA measurements showed that the co-precipitated (Ba, Ce and Y) oxalate had a different thermal behaviour from single oxalates. Despite a simple grinding procedure., sintered BaCe0.9Y0.1O3-delta pellets (1400 degrees C 48 h) presented 90.7% of relative density and preliminary impedance measurements showed an overall conductivity, of around 2 x 10(-4) S cm(-1) at 320 degrees C. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：3597 / 3600

页数：4

共 8 条

[1] The crystal structure of Ba(Ce0.8Zr0.2)O3 [J].