CANDIDATE COMPOUNDS WITH PEROVSKITE STRUCTURE FOR HIGH LITHIUM IONIC-CONDUCTIVITY

Authors
INAGUMA Y CHEN LQ ITOH M NAKAMURA T
Citation
Y. Inaguma et al., CANDIDATE COMPOUNDS WITH PEROVSKITE STRUCTURE FOR HIGH LITHIUM IONIC-CONDUCTIVITY, Solid state ionics, 70, 1994, pp. 196-202
Citations number
8
Categorie Soggetti
Physics, Condensed Matter","Chemistry Physical
Journal title
Solid state ionics → ACNP
ISSN journal
01672738
Volume
70
Year of publication
1994
Part
1
Pages
196 - 202
Database
ISI
SICI code
0167-2738(1994)70:<196:CCWPSF>2.0.ZU;2-A
Abstract
Compounds with perovskite structure which were candidates for high ion ic conductivity were searched and synthesized on the basis of the know ledge of lanthanum lithium titanates and their ionic conductivity was investigated. The free volume for lithium ions to migrate, and the lit hium 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 show ed higher ionic conductivity of the bulk part (sigma = 1.5 X 10(-3)S c m-1 at 300 K) than the pure lanthanum lithium titanate.