TFEP {Tris(2,2,2-trifluoroethyl) Phosphate, 99.0%} as Flame-Retardant Battery Electrolyte Solvent, 50 g/bottle, CBESTFEP

TFEP (Tris(2,2,2-trifluoroethyl) Phosphate) is a well-known flame-retardant electrolyte solvent for lithium-ion battery (LIB) research. The main role of TFEP is to significantly enhance the thermal safety of the lithium-ion battery. The presence of both fluorine and phosphorus atoms makes it an extremely effective flame retardant. TFEP increases the electrolyte's overall thermal stability and flash point. During a thermal event (like heating or a short circuit that leads to thermal runaway), TFEP decomposes and releases non-flammable gases. These radicals enter the gas phase and scavenge the highly reactive, flammable radicals produced by the decomposition of the main carbonate solvents. This interruption of the combustion chain reaction is highly effective.

Part Number	CBESTFEP (C-BES-TFEP)
CAS	358-63-4
Chemical Formula	C6H6F9O4P
Appearance	Colorless Liquid
Purity	>99.0%
Molecular Weight	344.07 g/mol
Boiling Point	~176.2 °C
Density	1.594 g/mL at 25 °C (lit.)
Package Size	50 g/bottle

Notes: Please try to store the TFP liquid in a dry place (glovebox is the best)

References: 

1. M. S. Ding, et al. Effects of Tris(2,2,2-trifluoroethyl) Phosphate as a Flame-Retarding Cosolvent on Physicochemical Properties of Electrolytes of LiPF6 in EC-PC-EMC of 3:3:4 Weight Ratios, J. Electrochem. Soc, 2002, 149, A1489.
2. Y. Gu, et al. Tris(2,2,2-trifluoroethyl) Phosphate as a Cosolvent for a Nonflammable Electrolyte in Lithium-Ion Batteries, ACS Appl. Energy Mater. 2021, 4, 5, 4919–4927.