OXYGEN-ION CONDUCTIVITY IN A NEW CLASS OF LAYERED BISMUTH OXIDES

被引：28

作者：

KENDALL, KR ^{[1
]}

THOMAS, JK ^{[1
]}

ZURLOYE, HC ^{[1
]}

机构：

[1] MIT,DEPT CHEM,CAMBRIDGE,MA 02139

来源：

SOLID STATE IONICS | 1994年 / 70卷 / pt 1期

基金：

美国国家科学基金会;

关键词：

Bismuth compounds - Differential thermal analysis - Electric conductivity measurement - Fuel cells - Ionic conduction in solids - Order disorder transitions - Oxides - Oxygen - Spectroscopy - Synthesis (chemical) - Thermal effects;

D O I：

10.1016/0167-2738(94)90313-1

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：

Bi2Sr2Nb2GaO11.5 and Bi2Sr2Nb2AlO11.5, two new oxygen deficient Aurivillius-like Phases, were synthesized and their ionic conductivities were measured using ac impedance spectroscopy. Both oxygen ion conductors display discontinuities in the Ar-rhenius plot of their ionic conductivity. A phase transition, confirmed by differential thermal analysis, is consistent with an oxygen vacancy order-disorder transition. At 900-degrees-C the conductivities are 3.1 X 10(-2)S cm and 2.3 X 10(-2)S cm for Bi2Sr2Nb2GaO11.5 and Bi2Sr2Nb2AlO11.5, respectively.

引用

页码：221 / 224

页数：4

共 19 条

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