Improvement of the stability of LiPF6 eIectrolytes toward water by the addition of LiCl

被引：7

作者：

Kawamura, T ^{[1
]}

Sonoda, T ^{[1
]}

Okada, S ^{[1
]}

Yamaki, J ^{[1
]}

机构：

[1] Kyushu Univ, Inst Mat Chem & Engn, Kasuga, Fukuoka 8168580, Japan

来源：

ELECTROCHEMISTRY | 2003年 / 71卷 / 12期

关键词：

lithium ion battery; LiCl; electrolyte; decomposition;

D O I：

10.5796/electrochemistry.71.1139

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

It is known that LiPF6 electrolytes react with water. In this study, LiCl, LiF, LiBr and LiI were added to 1 M LiPF6/EC + DEC electrolyte with about 5000 ppm water to inhibit the reaction of LiPF6. When 0.1 M LiCl was added, the LiPF6 electrolyte did not react with the water for 50 hours. Differential scanning calorimetry (DSC) measurement indicated that the amount of exothermic heat at 265degreesC, which is related to a reaction with LiPF6, did not change at all for 48 hours when LiCl was added. Based on this result, we confirmed that LiPF6 salt did not react with water when LiCl was added.

引用

页码：1139 / 1141

页数：3

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