CANDIDATE COMPOUNDS WITH PEROVSKITE STRUCTURE FOR HIGH LITHIUM IONIC-CONDUCTIVITY

被引：419
作者：
INAGUMA, Y
CHEN, LQ
ITOH, M
NAKAMURA, T
机构：
[1] Research Laboratory of Engineering Materials, Tokyo Institute of Technology, Midori-ku, Yokohama, 227
来源：
SOLID STATE IONICS | 1994年 / 70卷
关键词：
D O I：
10.1016/0167-2738(94)90309-3
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：
Compounds with perovskite structure which were candidates for high ionic conductivity were searched and synthesized on the basis of the knowledge of lanthanum lithium titanates and their ionic conductivity was investigated. The free volume for lithium ions to migrate, and the lithium and vacancy concentrations on the A-site play important roles for the ionic conductivity in the perovskite structure. Lanthanum lithium titanate substituted with 5 mol% Sr had a larger free volume and showed higher ionic conductivity of the bulk part (sigma = 1.5 X 10(-3)S cm-1 at 300 K) than the pure lanthanum lithium titanate.
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页码：196 / 202
页数：7
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