Room temperature molten salts as lithium battery electrolyte

被引：620
|
作者：
Garcia, B [1 ]
Lavallée, S [1 ]
Perron, G [1 ]
Michot, C [1 ]
Armand, M [1 ]
机构：
[1] Univ Montreal, CNRS, Lab Int Mat Electroactifs, UMR 2289,Dept Chim, Montreal, PQ H3C 3J7, Canada
来源：
ELECTROCHIMICA ACTA | 2004年 / 49卷 / 26期
关键词：
ionic liquids; ethyl-methyl-imidazolium; bis-(trifluoromethanesulfonyl)-imide; electrolyte; lithium battery;
D O I：
10.1016/j.electacta.2004.04.041
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
In the present study, are reported investigations obtained with the room temperature molten salt (RTMS) ethyl-methyl-imidazolium bis-(trifluoromethanesulfonyl)-imide (EMI-TFSI) in order to use it as solvent in lithium battery. The thermal stability, viscosity, conductivity and electrochemical properties are presented. A solution of 1 m lithium bis-(trifluoromethanesulfonyl)-imide (LiTFSI) in EMI-TFSI has been used to test the electrolyte in a battery with LiCoO2 and Li4Ti5O12 as respectively cathode and anode materials. Cycling and power measurements have been obtained. The results have been compared with those obtained with a molten salt formulated with a different anion, BF4- and with a conventional liquid organic solvent EC/DMC containing LiTFSI. The 1m LiTFSI/EMI-TFSI electrolyte provides the best cycling performance: a capacity up to 106 mAh g(-1) is still delivered after 200 cycles, with 1 C rate at 25 degreesC. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：4583 / 4588
页数：6
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