Explanation of important factors of lithium-ion battery electrolyte

The electrolyte is mainly composed of three parts, the most important being solvent, lithium salt, and additives. Among these components, although the amount of additives added is still small compared with other components, the types of additives that can be added in a portion of the electrolyte are the most. Solvents Solvents are used in electrolytes to dissolve lithium salts. The important solvents in the electrolyte are cyclic carbonates (PC, EC); chain carbonates (DEC, DMC, EMC); carboxylic acid esters (MF, MA, EA, MA, MP, etc.). Lithium salt High-quality lithium salt has a great influence on the energy density, power density, wide electrochemical window, cycle life, safety performance and other aspects of lithium ion batteries. Elements often contained in lithium salts include LiPF6, LiClO4, LiBF4, LiAsF6, and so on. There are many types of additives. Different additives have different uses. Although the added amount is small, they have different effects on the performance and effect of lithium-ion battery packs. The main types of additives include film-forming additives, conductive additives, flame retardant additives, overcharge protection additives, additives to control the content of H2O and HF in the electrolyte, additives to improve low-temperature performance, and multifunctional additives. Electrolyte has a significant impact on the overall performance of lithium-ion batteries. As the blood of lithium-ion batteries, electrolyte is responsible for transporting lithium ions. Its quality will directly affect the performance of lithium-ion batteries. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the basics for the correct charging of lithium-ion battery packs?