How to prepare lithium battery electrolyte?

Lithium battery electrolyte is the carrier of ion transmission in the battery. Generally composed of lithium salt and organic solvent. The electrolyte is used to conduct ions between the positive and negative electrodes of the lithium battery, which guarantees that the lithium battery can obtain the advantages of high voltage and high specific energy. 1. Chloroethylene carbonate is synthesized by chlorination of ethylene carbonate with chlorine gas, and then triethylamine is used as an acid binding agent to remove hydrogen chloride to obtain vinylene carbonate. The chlorination reaction is carried out under solvent-free conditions, and the elimination reaction uses dimethyl carbonate, which is commonly used as a solvent in the electrolyte, as a solvent, which can be used to prevent the residual solvent from causing adverse effects on additives. At the same time, choose 2,3,4-tri-tert-butyl Phenol is used as a polymerization inhibitor, and the yield of the two-step reaction is 75.0%, which is higher than the literature value. 2. Using anhydrous KF to react with chloroethylene carbonate to prepare fluoroethylene carbonate, the safety cost is reduced, the processing technology is easy to control, and PEG. 800 is a catalyst with a single-step yield of 82.5%. 3. 1,3-propane sultone is chlorinated with chlorine gas to synthesize 2-chloro-1,3-propane sultone, and then triethylamine is used as an acid binding agent to remove hydrogen chloride to obtain 1,3-propane Compared with the literature, the reaction route of sultone is greatly shortened, and the yield of the two-step reaction is 72.7%. The electrolyte used in the lithium battery pack is an ionic conductor in which the electrolyte lithium salt is dissolved in an organic solvent. Generally, the organic electrolyte used as a practical lithium battery should have the following properties: high lithium ion conductivity, generally should reach 10-3～2*10-3S/cm; lithium ion migration number should be close to 1; electrochemically stable potential range Wide; must have an electrochemical stability window of 0-5V; good thermal stability, wide use temperature range; stable chemical performance, no chemical reaction with the current collector and active materials in the battery. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Analysis of the ranking of battery processing manufacturers