Thermal stability and flammability of electrolytes for lithium-ion batteries

被引：283

作者：

Arbizzani, Catia ^{[1
]}

Gabrielli, Giulio ^{[1
]}

Mastragostino, Marina ^{[1
]}

机构：

[1] Univ Bologna, Dept Met Sci Electrochem & Chem Tech, I-40127 Bologna, Italy

来源：

JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 10期

关键词：

Flammability test; Ionic liquid; Lithium-ion battery; Safety; Thermal stability; LIQUID; CELLS; CARBONATE; SOLVENTS; SALTS;

D O I：

10.1016/j.jpowsour.2011.01.068

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：

Safety is the key-feature of large-size lithium-ion batteries and thermal stability of the electrolytes is crucial. We investigated the thermal and flammability properties of mixed electrolytes based on the conventional ethylene carbonate-dimethyl carbonate (1:1 wt/wt)-1 M LiPF6 and the hydrophobic ionic liquid N-butyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (Pyr(14)TFSI). The results of thermogravimetric analyses and flammability tests of mixed electrolytes of different compositions are reported and discussed. An important finding is that though the mixtures with high contents of ionic liquid are more difficult to ignite, they burn for a longer time, once they are ignited. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：4801 / 4805

页数：5

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