Electrolyte

The invention discloses an electrolyte, and the electrolyte contains a functionalized imidazole ionic liquid additive, a non-aqueous organic solvent and lithium salt. Compared with the prior art, theelectrolyte provided by the invention contains the non-aqueous solvent, the lithium salt and the functionalized imidazole type ionic liquid. Due to the coordination capability of a phosphine functional group and the lithium ions, the solvation capability of the lithium ions in the electrolyte is weakened, and the movement of the lithium ions in a positive electrode material and an electrolyte interface is greatly enhanced, so that the cycle performance of the battery is improved. Moreover, due to the property of the functionalized ionic liquid, the flame-retardant effect can be achieved, and the safety performance of the battery is improved. 一种电解液，包括：功能化咪唑型离子液体添加剂、非水有机溶剂与锂盐。与现有技术相比，本发明提供了一种电解液，包括非水溶剂、锂盐与功能化咪唑型离子液体。由于膦功能化基团与锂离子的配位能力，使得锂离子在电解液中的溶剂化能力减弱，大大增强了锂离子在正极材料和电解液界面的移动，从而提高了电池的循环性能。其次，功能化离子液体的本身性质，可以起到阻燃的作用，提高