Cycling performance of lithium metal polymer cells assembled with ionic liquid and poly(3-methyl thiophene)/carbon nanotube composite cathode

被引：26

作者：

Kim, Dong-Won ^{[1
]}

Sivakkumar, S. R. ^{[2
]}

MacFarlane, Douglas R. ^{[2
]}

Forsyth, Maria ^{[3
]}

Sun, Yang-Kook ^{[4
]}

机构：

[1] Hanbat Natl Univ, Dept Appl Chem, Taejon 305719, South Korea

[2] Monash Univ, ARC, Ctr Excellence Electromat Sci, Sch Chem, Clayton, Vic 3800, Australia

[3] Monash Univ, ARC, Ctr Excellence Electromat Sci, Dept Mat Engn, Clayton, Vic 3800, Australia

[4] Hanyang Univ, Dept Chem Engn, Seoul 133791, South Korea

来源：

JOURNAL OF POWER SOURCES | 2008年 / 180卷 / 01期

关键词：

carbon nanotube; conducting polymer; ionic liquid; lithium metal polymer cell; poly(3-methylthiophene); safety;

D O I：

10.1016/j.jpowsour.2008.01.071

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：

A poly(3-methylthiophene) (PMT)/multi-walled carbon nanotube (CNT) composite is synthesized by in situ chemical polymerization. The PMT/CNT composite is used as an active cathode material in lithium metal polymer cells assembled with ionic liquid (IL) electrolytes. The IL electrolyte consists of 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIBF4) and LiBF4. A small amount of vinylene carbonate is added to the IL electrolyte to prevent the reductive decomposition of the imidazolium cation in EMIBF4. A porous poly(vinylidene fluoride-co-hexafluoropropylene) (P(VdF-co-HFP)) film is used as a polymer membrane for assembling the cells. Electrochemical properties of the PMT/CNT composite electrode in the IL electrolyte are evaluated and the effect of vinylene carbonate on the cycling performance of the lithium metal polymer cells is investigated. The cells assembled with a non-flammable IL electrolyte and a PMT/CNT composite cathode are promising candidates for high-voltage-power sources with enhanced safety. (C) 2008 Published by Elsevier B.V.

引用

页码：591 / 596

页数：6

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