Preparation of amorphous 75L2S•χP2S3 •(25-χ)P2S5 (mol%) solid electrolytes by a high-energy ball-milling process and their application for an all-solid-state lithium battery

被引:52
作者
Machida, N [1 ]
Yamamoto, H [1 ]
Asano, S [1 ]
Shigematsu, T [1 ]
机构
[1] Konan Univ, Dept Chem, Higashinada Ku, Kobe, Hyogo 6588501, Japan
基金
日本学术振兴会;
关键词
Li2S; lithium ion; lithium battery; solid electrolyte; mechanical milling;
D O I
10.1016/j.ssi.2004.08.019
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
Preparation of lithium ion conducting solid electrolytes in the composition 75Li(2)S . xP(2)S(3) . (25 - x)P2S5 (mol%) was attempted by use of a high-energy ball-milling process at room temperature. Amorphous samples were obtained in the composition range of x = 0 to x = 5. In the samples with x greater than or equal to 8.3, a crystalline Li2S phase was remained after the ball milling for 50 It. The lithium ion conductivity at 298 K of the amorphous samples was increased with an increase in x, and the amorphous sample with x = 5 showed the highest lithium ion conductivity of 6.2 x 10(-4) S . cm(-1) at 298 K among the obtained samples. A laboratory-scale all-solid-state lithium battery using the amorphous sample with x = 5 showed good discharge-charge performance at room temperature. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:473 / 479
页数:7
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