Stabilization of superionic conduction phase in Li3Sc2(PO4)3

被引：34

作者：

Suzuki, T

Yoshida, K

Uematsu, K

Kodama, T

Toda, K

Ye, ZG

Sato, M

机构：

[1] Niigata Univ, Grad Sch Sci & Technol, Dept Act Mat Chem, Niigata 95021, Japan

[2] Niigata Univ, Fac Engn, Dept Chem & Chem Engn, Niigata 95021, Japan

来源：

SOLID STATE IONICS | 1997年 / 104卷 / 1-2期

关键词：

lithium superion conductor; solid-state reaction; phase transition; ionic conductivity; stabilization; superionic conduction; vacancy; substitute;

D O I：

10.1016/S0167-2738(97)00404-9

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：

Lithium superion conductors, Li3+2x(Sc1-xMgx)(2)(PO4)(3), Li3-2x(Sc1-xMx)(2)(PO4)(3) (M=Ti, Zr, Sn, Hf) and Li3-4x(Sc1-xMx)(2)(PO4)(3) (M = Nb, Ta) were prepared by a solid-state reaction. TG-DTA analysis indicated no phase transition in Li3+2x(Sc1-xMgx)(2)(PO4)(3) and Li3-2x(Sc1-xMx)(2)(PO4)(2) (M = Ti, Zr, Sn, Kf) with x higher than 0.05, and in Li3-4x(Sc1-xMx)(2)(PO4)(3) (M=Nb, Ta) with x higher than 0.025. The room temperature ionic conductivity of Li3Sc2(PO4)(3) has been increased by three orders of magnitude with the highest conductivity observed in Li3-2x(Sc1-xTix)(2)(PO4)(3) with x = 0.20 and in Li3-2x(Sc1-xZrx)(2)(PO4)(3) with x = 0.10. It was ascribed to the stabilization of the high temperature superionic conduction phase and the introduction of vacancies on the Li+ sites by substituting Ti4+ Or Zr4+ for Sc3+.

引用

页码：27 / 33

页数：7

共 11 条

[1] LI+ -ION CONDUCTIVITY OF LI1+XMXTI2-X(PO4)3 (M-SC(3+),Y(3+)) [J].