Room temperature molten salts as lithium battery electrolyte

被引：623

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

页码：4583 / 4588

页数：6

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