Functionalized imidazolium ionic liquids as electrolyte components of lithium batteries

被引：88

作者：

Egashira, Minato ^{[1
]}

Todo, Hirotaka ^{[2
]}

Yoshimoto, Nobuko ^{[1
]}

Morita, Masayuki ^{[1
]}

Yamaki, Jun-ichi ^{[3
]}

机构：

[1] Yamaguchi Univ, Grad Sch Sci & Engn, Yamaguchi, Japan

[2] Yamaguchi Univ, Fac Engn, Yamaguchi 7558611, Japan

[3] Kyushu Univ, Inst Mat Sci & Engn, Fukuoka 8168580, Japan

来源：

JOURNAL OF POWER SOURCES | 2007年 / 174卷 / 02期

关键词：

ionic liquid; functionalization; surface film;

D O I：

10.1016/j.jpowsour.2007.06.123

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：

Some basic properties and compatibility toward lithium electrode for electrolytes based on substituted imidazolium ionic liquid have been investigated. The ionic liquids having imidazolium cation substituted by methylcarboxyl or cyano group suffers from low conductivity. However, reversible lithium deposition-dissolution process was observed in electrolytes based on these electrolytes. In particular, lithium salt solution in cyanomethyl-substituted imidazolium ionic liquid provided similar cycle efficiency to conventional organic solvent electrolyte at constant-current condition. The mixed ionic liquid electrolyte containing the cyanomethyl-substituted ionic liquid also provided good cycle performance despite of containing large amount of 1-ethyl-3-methyl imidazolium (EMI)-based ionic liquid. Such mixed electrolyte system serves both the stability of lithium electrode process and valid conductivity for practical use. (C) 2007 Elsevier B.V.. All rights reserved.

引用

页码：560 / 564

页数：5

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