STABILITY OF GARNET-TYPE Li7La3Zr2O12-BASED CERAMICS FOR ALL-SOLID-STATE BATTERIES

被引：0

作者：

Yi, Eun-Jeong ^{[1
]}

Yoon, Keun-Young ^{[1
]}

Jung, Hyun-Ah ^{[1
]}

Hwang, Haejin ^{[1
]}

机构：

[1] Inha Univ, Dept Mat Sci & Engn, 100 Inha Ro, Incheon 22212, South Korea

来源：

ARCHIVES OF METALLURGY AND MATERIALS | 2019年 / 64卷 / 02期

基金：

新加坡国家研究基金会;

关键词：

All-solid-state batteries; solid electrolytes; garnet type ceramics; ionic conductivity; ION BATTERIES; LITHIUM; ELECTROLYTE; FABRICATION; AIR; CHALLENGES;

D O I：

10.24425/amm.2019.127581

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Al and Nb-doped Li7La3Zr2O12 (LLZO) and W-doped LLZO lithium ion conducting electrolyte samples were prepared and their H2O stability was investigated. The LLZO samples were exposed to 50% humidified air for 48 h. After H2O exposure, a cubic to tetragonal transformation occurred and acquired SEM images exhibited the presence of reaction phases at the grain boundaries of Al and Nb-LLZO. As a result, the lithium ion conductivity significantly decreased after H2O exposure. On the contrary, W-LLZO showed good stability against H2O. Although the cubic to tetragonal transformation was also observed in H2O-exposed W-LLZO, the decrease in lithium ion conductivity was found to be modest. No morphological changes of the W-LLZO samples were confirmed in the H2O-exposed W-LLZO samples.

引用

页码：579 / 583

页数：5

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