Sol-gel synthesis of Li1.5Al0.5Ge1.5(PO4)3 solid electrolyte

被引:42
作者
Kotobuki, Masashi [1 ]
Koishi, Masaki [1 ]
机构
[1] Hakodate Natl Coll Technol, Dept Mat & Environm Engn, Hakodate, Hokkaido 0428501, Japan
关键词
Solid electrolyte; Sol-gel method; Lithium battery; NASICON-type electrolyte; LITHIUM BATTERY; CONDUCTIVITY; COMPATIBILITY; FABRICATION; ANODE;
D O I
10.1016/j.ceramint.2015.03.064
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The effect of calcination on Li ion conductivity of Li1.5Al0.5Ge1.5(PO4)(3) (LAGP) solid electrolyte prepared by a sol gel method is examined. The Li ion conductivity of LAGP increases with calcination temperature. After reaching maximum conductivity at 850 degrees C, the conductivity decreases with increase of the calcination temperature. The calcination holding time also strongly affects Li ion conductivity of LAGP. The conductivity increases with holding time until 12 h and then decreases. It is found that the control of crystallization rate is critical to obtain bulk LAGP with high Li ion conductivity. The highest bulk and total conductivities at 30 degrees C are 9.5 x 10(-4) and 1.8 x 10(-4) S cm(-1), respectively, obtained for the bulk LAGP calcined at 850 degrees C for 12 h. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码:8562 / 8567
页数:6
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