Water-stable lithium ion conducting solid electrolyte of the Li1.4Al0.4Ti1.6-xGex(PO4)3 system (x=0-1.0) with NASICON-type structure

被引：41
|
作者：
Zhang, Peng [1 ]
Matsui, Masaki [1 ]
Hirano, Atsushi [1 ]
Takeda, Yasuo [1 ]
Yamamoto, Osamu [1 ]
Imanishi, Nobuyuki [1 ]
机构：
[1] Mie Univ, Grad Sch Engn, Tsu, Mie 5148507, Japan
来源：
SOLID STATE IONICS | 2013年 / 253卷
基金：
日本科学技术振兴机构;
关键词：
Solid electrolyte; Lithium conductor; Lithium-air battery; GLASS-CERAMICS; COMPOSITE;
D O I：
10.1016/j.ssi.2013.09.022
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：
Solid ionic conductors composed of Li1.4Al0.4Ti1.6 - xGex(PO4)(3) (x = 0-1.0) with the NASICON-type structure were synthesized with a precursor prepared using the sol-gel method. The electrical conductivity was examined as a function of x in Li1.4Al0.4Ti1.6 - xGex(PO4)(3) at various sintering temperatures and for various sintering periods. The highest electrical conductivity was obtained for Li1.4Al0.4Ti1.6 - xGex(PO4)(3) sintered at 900 degrees C for 11 h in air. The total and bulk conductivities of the sintered pellet were 1.29 x 10(-3) and 2.35 x 10(-3) S cm(-1) at 25 degrees C, respectively. The grain boundary resistance of Li1.4Al0.4Ti1.6 - xGex(PO4)(3) was significantly increased to 552 Omega cm(2) from 12.2 Omega cm(2) by immersion in distilled water at 50 degrees C for one week, whereas the bulk resistance was not increased. However, no significant increase of the bulk and grain boundary resistance was observed after immersion in a saturated aqueous solution of LiOH and LiCl. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：175 / 180
页数：6
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