Investigation on jet combustion characteristics of electrolyte of lithium ion battery with tris(1,3-dichloroispropyl)phosphate
The possibility of using tris(1,3-dichloroisopropyl)phosphate(TDCPP)as a flame retardant addition to lithium-ion battery electrolytes for lithium-ion battery safety was investigated in this research.In this paper,the self-extinguishing time(SET)and self-propagating rate(SPR)were used to examine the flame retardancy of TDCPP at room temperature.And then,a specially designed experimental apparatus was used to investigate how TDCPP affected the jet igniting characteristics of electrolyte at high temperatures.The results show that when the content of the TDCPP(mass fraction)reaches 40%at room temperature,the combustion flame cannot spread.The combustible temperature point of the electrolyte and the ignition delay time of the electrolyte both rise synchronously at high temperatures with an increase in the TDCPP content.Additionally,compared to TDCPP flame retardant,injection time has a more substantial impact on ambient temperature.In conclusion,TDCPP increases the safety of lithium ion batteries at both room temperature and high temperatures.
lithium ion batteryelectrolyteTDCPPjet combustionsafety
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