A New Class of Phosphates as Co-Solvents for Nonflammable Lithium Ion Batteries Electrolytes

被引：17

作者：

Jin, Zuxi ^{[1
]}

Wu, Lei ^{[1
]}

Song, Zhiping ^{[1
]}

Yan, Kun ^{[1
]}

Zhan, Hui ^{[1
]}

Li, Zaoying ^{[1
]}

机构：

[1] Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China

来源：

ECS ELECTROCHEMISTRY LETTERS | 2012年 / 1卷 / 04期

关键词：

TRIMETHYL PHOSPHATE; RECHARGEABLE BATTERIES; THERMAL-STABILITY; ALKYL PHOSPHATES; FLAME-RETARDANT; CELLS; PERFORMANCE; GRAPHITE; ADDITIVES; LIFEPO4;

D O I：

10.1149/2.007203eel

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The two new phosphates, DMMEMP and DEMEMP containing ethylene oxide (EO) have been synthesized and used as co-solvents respectively mixed with ethylene carbonate (EC) and dimethyl carbonate (DMC). The flammability of the new ternary electrolytes was examined by measuring the self-extinguishing time of electrolytes. As the content of DMMEMP or DEMEMP in the mixture reaches 30 wt%, no flammability is observed. The electrochemical test results indicate that the ternary electrolytes dissolving 1.0 M lithium bis(trifluoromethanesulfonyl)imide(LiTFSI) have good thermal stabilities, wide electrochemical windows and high conductivities. The Li/LiFePO4 half-cells using the electrolyte show good charge-discharge performances and cycle stabilities. (c) 2012 The Electrochemical Society. All rights reserved.

引用

页码：A55 / A58

页数：4

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