| abstract |
An electrolyte and an electrochemical device. The electrolyte comprises fluorine-containing phosphate ester and carboxylic ester, wherein the weight ratio of the fluorine-containing phosphate ester to the carboxylic ester is 0.001-0.5. The electrochemical device comprises the electrolyte, the flammability of the electrolyte can be reduced, and the safety and cycle performance of the electrochemical device are improved. |