LITHIUM INSERTION IN LACUNAR PYROCHLORE-TYPE WO3

被引：6

作者：

DRIOUICHE, A

FIGLARZ, M

DELMAS, C

机构：

[1] UNIV PICARDIE,REACTIV & CHIM SOLIDES LAB,CNRS,URA 1211,33 RUE ST LEU,F-80039 AMIENS,FRANCE

[2] UNIV BORDEAUX 1,CNRS,CHIM SOLIDE LAB,F-33405 TALENCE,FRANCE

来源：

SOLID STATE IONICS | 1993年 / 62卷 / 1-2期

关键词：

D O I：

10.1016/0167-2738(93)90258-5

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：

Chemical and electrochemical lithium insertion in lacunar pyrochlore-type WO3 (l.p. WO3) with a composition H0.5W1.54O4.87 have been investigated. Li insertion in l.p. WO3 is a topotactic reaction with conservation of the W-O matrix in the range 0<x<0.5. The strain effects of lithium insertion produce a small decrease of the lattice parameter: a=10.248(1) angstrom for l.p.WO3 and a=10.224(1) angstrom for l.p.Li0.5WO3. For x>0.5 progressive amorphization occurs; the weakness of the pyrochlore W-O matrix may be related to its very large lacunar structure with 23% and 18% W and O vacancies, respectively.

引用

页码：113 / 117

页数：5

共 13 条

[1] ON THE LACUNAR STRUCTURE OF PYROCHLORE-TYPE WO3 [J].