Summary:

The present invention provides a lithium-ion battery electrolyte and a lithium-ion battery containing the electrolyte, which belongs to the technical field of lithium-ion battery. The electrolyte comprises an electrolyte salt, an ester solvent and an additive, and the structural formula of the additive is as follows: wherein, R1 is containing halogen methyl group, comprising trifluoromethyl group, difluoromethyl group, fluoromethyl group, trichloromethyl group, dichloromethyl group, chloromethyl group; R2 is a halogen group of atoms, including fluorine, chlorine, bromine, and iodine. The electrolyte not only has excellent compatibility with graphite-based anode materials, but also improves the wettability of organic solvents on the separator. Lithium-ion batteries prepared using this electrolyte have good cycling stability.

Link: http://epub.cnipa.gov.cn/patent/CN116565324A?8kt2YOWWXQBD=1694672763621