After the implementation of the strong standard, the safety protection technology of power lithium battery becomes the new focus of competition for car manufacturers
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The important composition and performance analysis of lithium battery electrolyte
by：Vglory
2021-03-28
Lithium battery electrolyte is mainly composed of three parts: cyclic carbonate (PC, EC); chain carbonate (DEC, DMC, EMC); carboxylic acid esters (MF, MA, EA, MA, MP, etc.); (Used to dissolve lithium salt) Lithium salt: LiPF6, LiClO4, LiBF4, LiAsF6, etc.; additives: film-forming additives, conductive additives, flame retardant additives, overcharge protection additives, additives to control the content of H2O and HF in the electrolyte, improve Low-temperature performance additives and multifunctional additives; lithium battery organic electrolytes should have the following properties (1) Good electrochemical stability, and no reaction with positive electrode materials, negative electrode materials, separators, current collectors, binders, etc.; (2) The ionic conductivity is new, the dielectric constant is high, the viscosity is low, and the resistance of ion migration is small; (3) It is liquid in a wide temperature range, and the general temperature range is -40℃～70℃. It is suitable for improving the height of lithium batteries Low temperature characteristics; (4) It can promote the reversible reaction of the electrode to the best extent, that is, it has a higher cycle efficiency; (5) It is environmentally friendly, preferably non-toxic or low-toxic. 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.
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