CHARACTERIZATION OF GD, YB AND ND DOPED BARIUM CERATES AS PROTON CONDUCTORS

被引：135

作者：

STEVENSON, DA

JIANG, N

BUCHANAN, RM

HENN, FEG

机构：

[1] Department of Materials Science, Stanford University, Stanford

来源：

SOLID STATE IONICS | 1993年 / 62卷 / 3-4期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0167-2738(93)90383-E

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：

BaCeO3-based ceramics with Gd, Yb and Nd dopants were synthesized using conventional ceramic powder methods and were characterized by the following measurements: complex impedance to measure the bulk and grain boundary conductivity; the water uptake or loss in different environments; and the influence of normal and heavy water uptake on the conductivity of the samples. Conductivity and gravimetric measurements of all the samples show strong evidence of proton conduction, including a classical hydrogen/deuterium isotope effect. The influence of the gas ambient and the temperature on water uptake during annealing pretreatment is demonstrated and may be a significant factor in the discrepancies in the literature of these materials.

引用

页码：279 / 285

页数：7

共 10 条

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