PHASE-EQUILIBRIA, CRYSTAL-CHEMISTRY AND IONIC-CONDUCTIVITY IN THE LISICON SYSTEM LI4GEO4-LI2.5GA0.5GEO4

被引：25

作者：

ROBERTSON, A

WEST, AR

机构：

[1] University of Aberdeen, Department of Chemistry, Aberdeen, AB9 2UE Scotland, Meston Walk

来源：

SOLID STATE IONICS | 1992年 / 58卷 / 3-4期

关键词：

D O I：

10.1016/0167-2738(92)90140-K

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：

A range of high Li+ ion conductivity solid solutions with the gamma-LISICON structure forms by the substitution mechanism 3Li half arrow right over half arrow left Ga. These extend from compositions close to, but not including, Li4GeO4 up to Li2.5Ga0.5GeO4. The phase diagram for the join Li4GeO4-Li2.5Ga0.5GeO4 is presented together with lattice parameter data on the gamma solid solution, a new phase beta-Li2.5Ga0.5GeO4 and an ordered gamma phase, c-Li2.8Ga0.4GeO4. Conductivity Arrhenius plots are markedly non-linear. A linear region is observed below approximately 260-degrees-C in which the conductivity data depend on sample pretreatment. A high temperature curved region is seen in which the data are reversible on heating/cooling cycles. Conductivities reach a maximum at the approximate composition Li3.7Ga0.1GeO4.

引用

页码：351 / 358

页数：8

共 19 条

[1]

ABRAHAMS I, 1989, ACTA CRYSTALLOGR B, V45, P452

[2] PHASE-DIAGRAM OF THE LISICON, SOLID ELECTROLYTE SYSTEM, LI4GEO4-ZN2GEO4 [J].