High-wettability electrolyte and preparation method thereof

The invention relates to the technical field of lithium ion batteries, in particular to a high-wettability electrolyte and a preparation method thereof.The high-wettability electrolyte comprises an organic solvent, an electrolyte and an additive, the concentration of the electrolyte in the electrolyte is 0.8-1.5 mol/L, the mass of the additive accounts for 2-18% of the total mass of the electrolyte, the additive comprises a first additive, a second additive and a third additive, the first additive is vinyl tri (2, 2, 2-trifluoro) ethyoxyl silane, and the second additive is vinyl tri (2, 2, 2-trifluoro) ethyoxyl silane. According to the electrolyte prepared by the invention, the wettability of the electrolyte to a pole piece is improved on the basis of ensuring the electrochemical performance of the lithium ion battery. 本发明涉及锂离子电池技术领域，具体涉及一种高浸润性电解液及其制备方法，该高浸润性电解液包括有机溶剂、电解质和添加剂，所述电解质在电解液中的浓度为0.8-1.5mol/L，所述添加剂的质量占电解液总质量的2-18％，所述添加剂包括第一添加剂，所述第一添加剂为乙烯基三(2，2，2-三氟)乙氧基硅烷。本发明制备的电解液在保证锂离子电池电化学性能的基础上，改善了电解液对极片的浸润性。