Densification and ionic-conduction improvement of lithium garnet solid electrolytes by flowing oxygen sintering

被引：180

作者：

Li, Yiqiu ^{[1
]}

Wang, Zheng ^{[1
]}

Li, Chilin ^{[1
]}

Cao, Yang ^{[1
]}

Guo, Xiangxin ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2014年 / 248卷

基金：

中国国家自然科学基金;

关键词：

Lithium garnet electrolytes; Flowing oxygen sintering; Densification; Ionic conductivity; (PB; LA)(ZR; TI)O-3; CERAMICS; LI7LA3ZR2O12; SUBSTITUTION; TRANSPORT;

D O I：

10.1016/j.jpowsour.2013.09.140

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：

High density (similar to 96%) garnet-type Al-contained Li6.75La3Zr1.75Ta0.25O12 (LLZTO-Al) solid electrolytes are prepared by conventional solid-state reaction and the following flowing oxygen sintering process. An overall ionic conductivity as high as 7.4 x 10(-4) S cm(-1) at 25 degrees C is achievable, remarkably higher than that obtained by sintering in other atmospheres. The dependence of density and conductivity of solid electrolytes on sintering under different oxygen partial pressures is discussed. Atmosphere sintering is proved to be an effective method to improve the relative density of lithium oxide ceramics. (C) 2013 Elsevier B.V. All rights reserved.

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收藏

页码：642 / 646

页数：5

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