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Lithium battery electrolyte composition and basic requirements
by：Vglory
2021-03-28
Important components of lithium battery electrolyte The electrolyte is generally prepared from raw materials such as high-purity organic solvents, electrolyte lithium salts, and necessary additives under certain conditions and in certain proportions. (1) Solvent: cyclic carbonate (PC, EC); chain carbonate (DEC, DMC, EMC); carboxylic acid esters (MF, MA, EA, MA, MP, etc.); (used to dissolve lithium salt ) (2) Lithium salt: LiPF6, LiClO4, LiBF4, LiAsF6, etc.; (3) 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; the basic requirements of lithium battery electrolyte a. High lithium ion conductivity, generally should reach 1x10-3~2x10-2S/cm; b. High thermal and chemical stability, No separation occurs in a wide voltage range; c. A wide electrochemical window, to maintain the stability of electrochemical performance in a wide voltage range; d. With other parts of the lithium battery such as electrode materials, electrode current collectors and diaphragms, etc. Has good compatibility; e. Safe, non-toxic and non-polluting. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.
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