Fluoroethylene carbonate electrolyte and its use in lithium ion batteries with graphite anodes

被引：278

作者：

McMillan, R ^{[1
]}

Slegr, H ^{[1
]}

Shu, ZX ^{[1
]}

Wang, WD ^{[1
]}

机构：

[1] Natl Res Council Canada, Inst Chem Proc & Environm Technol, Ottawa, ON K1A 0R6, Canada

来源：

JOURNAL OF POWER SOURCES | 1999年 / 81卷

关键词：

fluoroethylene carbonate electrolyte; lithium ion batteries; graphite anodes;

D O I：

10.1016/S0378-7753(98)00201-8

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：

The electrolyte decomposition during the first. lithiation of graphite is reduced to 85 mA h/g in an electrolyte containing equal volumes of fluoroethylene carbonate (Fluoro-EC) and of a co-solvent propylene carbonate (PC). The volume fraction of Fluoro-EC can be further reduced to 0.05 in a tri-solvent system with a co-solvent containing equal volumes of ethylene carbonate (EC) and PC. A Lithium ion cell containing Fluoro-EC PC and EC shows a long cycle life. The capacity decreases by 37% from the initial value in over 200 cycles. Cell current efficiency is 100%, thus solving the poor cell current efficiency when chloroethylene carbonate (Chloro-EC) is used in place of Fluoro-EC. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：20 / 26

页数：7

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