锂快离子导体Li_8Al_(1-x)Si_(2x)P_(1-x)O_8系统的研究  

Study on the Lithium Superiontic Conductors of Li_8Al_(1-x)Si_(2x)P_(1-x)O_8 System

作　　者：张保柱[1] 张志强[1] 马琦[1] 李军平[1] 郑娜[1] 张智敏[1] 

机构地区：[1]山西大学化学化工学院,山西太原030006

出　　处：《山西大学学报（自然科学版）》2006年第1期65-68,共4页Journal of Shanxi University(Natural Science Edition)

基　　金：山西省自然科学基金(20041016)

摘　　要：以L i4S iO4为母体,煤矸石为原料,经高温固相反应制得L i8A l1-xS i2xP1-xO8系统的锂快离子导体.X射线衍射分析结果表明在0.5<x<0.9的组成范围内形成单一的固溶相,其空间群为P21/m,导电性测试结果表明x=0.6的合成物具有最高的电导率,在673 K时其电导率达到2.8×1-0 2S/cm,其活化能为60.80 kJ/m o l.Lithium superiontic conductors of Li8A1-xSi2xP1- xO8 based on an original unit of Li4SiO4 have been prepared by high temperature solid state reaction using coal gangue as starting meterial. X-ray diffraction analysis indicated that a single solid solution phase with the P21/m space group was formed in the composition range of 0. 5〈x〈0.9. The composition with x=0.6 possesses maximum ionic conductivity which reaches up to 2.8×10-^2 S/cm at 673 K and its activation energy is 60. 80 kJ/mol（temperature range 373 K-673 K）.

关 键 词：锂快离子导体 煤矸石 矿物快离子导体 电导率 

分 类 号：O646.1[理学—物理化学]