Fluoroethylene Carbonate (FEC)

Fluoroethylene Carbonate（FEC）

Synonyms：4-Fluoro-1,3-Dioxalan-2-One

CAS No.：114435-02-8

EINECS No.：483-360-5

Molecular Formula：C3H3FO3

Molecular Weight：106.0525

Structure Formula：

Standard：

Properties：It is a colorless transparent liquid or colorless crystal. Melting point: 18-25℃, boiling point: 212℃, density (25℃) : 1.454g/ml. Refractive index (25℃):1.4538, flash point: 101.7℃.

Uses：Fluoroethylene carbonate is an organic solvent electronic chemical, mainly used as an electrolyte additive for lithium ion batteries. It can form a layer of SEI film inside the lithium battery, this structure layer is dense and uniform, but does not increase impedance, so that it has a certain toughness and self-healing ability. It can improve the rate and safety of lithium-ion batteries, and increase the stability of electrode materials. Fluoroethylene carbonate can also effectively inhibit the structural breakage of the silicon carbon negative electrode due to the expansion of lithium ions during charging and discharging. At the same time, it can prevent the further decomposition of the electrolyte, improve the flash point and low temperature of the electrolyte, enhance the cycle performance of the electrolyte, and has good flame retardant.

Storage：Keep in a well-closed container and store in a cool, dry and well-ventilated warehouse. It is forbidden to be exposed to the sun, and should be packed in a barrel with nitrogen protection. Storage temperature below 25℃, shelf life 6 months.

Packing：This product is packed in a stainless steel barrel with nitrogen protection (N2 pressure 0.11-0.13mpa). 200kg/barrel, 100kg/barrel, 25kg/barrel.