Synonyms：
4-Vinyl-1,3-dioxolan-2-one
4-Ethenyl-1,3-dioxolan-2-one
4-Vinyl-[1,3]dioxolan-2-on
vinylethylene carbonate
2-Oxo-4-vinyl-1,3-dioxolaneVinylethylene Carbonate
4-VINYL-1 3-DIOXOLAN-2-ONE 99
4-vinyl-[1,3]dioxolan-2-one
2-Oxo-4-vinyl-1,3-dioxolane
Vinyl ethylene carbonate (4-ethenyl-1,3-dioxolan-2-one)
Molecular Formula:C5H6O3
Molecular weight：114.09900
Physical Properties:
Density: 1.188 g/mL at 25 °C(lit.)
Boiling point: 237 °C733 mm Hg(lit.)
Flash point: 206 °F
Refractive index: n20/D 1.45(lit.)
Specification:
Appearance: colorless transparent liquid
Content: ≥99.5%
Moisture: ≤100ppm
Chroma (APHA): ≤10Hazen
Iron (Fe): ≤5ppm
Cl content:≤5ppm
SO42-content:≤10ppm
Application:
As a highly reactive film-forming additive in lithium secondary batteries. VEC has a higher dielectric constant, higher boiling point and flash point, which is beneficial to improve the safety performance of lithium-ion batteries. VEC begins to decompose at 1.35V, and can form a stable and dense SEI film on the flake graphite, effectively preventing PC and solvated lithium ions from co-inserting between the graphite layers, suppressing the decomposition of the electrolyte to a minimum, and improving lithium ions The charge-discharge efficiency and cycle characteristics of the battery are stable in chemical properties. When a certain amount of VEC is added to the electrolyte at a suitable temperature, the cycle performance of the cathode metal will be significantly improved. The retained discharge capacity can be increased from 68.8% to 84.8% after multiple charge-discharge cycles. According to the test results, the addition of VEC can make the CO2 peak disappear during the second charge-discharge cycle and significantly reduce the CO2 release. This indicates that both the cathode and anode form a stable SEI layer with the participation of VEC.
Package and Storage:
20kg/drum, 200kg/drum
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