Tetrabutylammonium Hexafluorophosphate as Flame Retardant Additive for Lithium Ion Batteries

Authors

Qing ZHAO, Huai An Institute of Science and Technology Information, Huai'an, 223001;
Qian ZHANG, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China;
Jing-min FAN, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China;
Ming-sen ZHENG, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China;
Quan-feng DONG, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China;

Corresponding Author

Jing-min FAN;
Quan-feng DONG(qfdong@xmu.edu.cn)

Abstract

Safety issues have been attracted more and more attentions due to the wide applications of lithium ion batteries. Introducing flame retardant additives are one of the effective strategies to improve the safety of lithium-ion batteries. In this paper, the tetrabutylammonium hexafluorophosphate (TBAPF₆) as a flame retardant additive was added to the electrolyte as a flame retardant additive to enhance the safety of lithium ion batteries. The self-extinguishing time (SET) and ionic conductivities of the electrolytes with different TBAPF₆ contents were investigated. It is found that TBAPF6 dramatically reduced the flammability of the electrolyte while slightly decreasing ionic conductivitiesconductivity. The electrochemistry electrochemical performances of graphite half cells with higher content of TBAPF₆ showed poor compatibility between TBAPF₆ additive and graphite anode due to the lack of stable SEI layer formation. But However, the LiCoO₂/Graphite graphite full battery with 5% TBAPF₆ showed good electrochemical performance and extraordinary thermal stability within 300 ^oC, representing demonstrating a good flame retardant additive of TBAPF₆.

Graphical Abstract

DOI Link

https://doi.org/10.13208/j.electrochem.160419

Publication Date

2017-08-25

Online Available Date

2016-08-11

Revised Date

2016-05-26

Received Date

2016-04-19

Recommended Citation

Qing ZHAO, Qian ZHANG, Jing-min FAN, Ming-sen ZHENG, Quan-feng DONG. Tetrabutylammonium Hexafluorophosphate as Flame Retardant Additive for Lithium Ion Batteries[J]. Journal of Electrochemistry, 2017 , 23(4): 435-440.
DOI: 10.13208/j.electrochem.160419
Available at: https://jelectrochem.xmu.edu.cn/journal/vol23/iss4/8