Physical Investigation of the Mechanisms of Lithium Insertion in Sulfides as Anode Materials for Lithium-Ion Batteries

被引：2
|
作者：
Dedryvere, R. [1 ]
Olivier-Fourcade, J. [1 ]
Jumas, J. C. [1 ]
机构：
[1] Univ Montpellier 2, Lab Agregats Mol & Mat Inorgan LAMMI, CC15, F-34095 Montpellier, France
来源：
IONICS | 2000年 / 6卷 / 5-6期
关键词：
D O I：
10.1007/BF02374159
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：
Electrochemical and chemical lithium insertion (via n-butyllithium) were carried out on a family of spinel phases of the Cu2S-In2S3-SnS2 system. Electrochemical measurements have revealed great reversible capacities and the possible use of these materials as negative electrodes in lithium-ion batteries, Sn-119 Mossbauer spectroscopy, Li-7 NMR and S K edge EXAFS spectroscopy were carried out to characterize the mechanisms of lithium insertion. This study has shown the formation of lithium-metal alloys finely dispersed in an amorphous lithium sulfide matrix at low potentials. A model is proposed to explain the great capacities observed in these materials.
引用
收藏
页码：397 / 402
页数：6
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