Proton conductivity in perovskite type yttrium doped barium hafnate

被引：39

作者：

Snijkers, FMM ^{[1
]}

Buekenhoudt, A ^{[1
]}

Luyten, JJ ^{[1
]}

Cooymans, J ^{[1
]}

Mertens, M ^{[1
]}

机构：

[1] Flemish Inst Technol Res, Vlaamse Instelling Technol Onderzoek, B-2400 Mol, Belgium

来源：

SCRIPTA MATERIALIA | 2004年 / 51卷 / 12期

关键词：

ion conduction; proton conductor; barium hafnate; fuel cells; perovskite;

D O I：

10.1016/j.scriptamat.2004.08.021

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Yttria doped Ba-hafhates were prepared by solid state route and the proton conductivity of pressed samples of yttria doped barium hafnate was determined with impedance spectroscopy. The results are compared with existing data for cerates and zirconates. It was found that Ba-hafnates show a level of proton conduction that is comparable to that of doped Ba-zirconates at low and slightly higher at high temperatures. This is in agreement with the prediction based on the ionic radius of the tetravalent atom in the perovskite. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1129 / 1134

页数：6

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