Lithium battery electrolyte composition explanation

The composition of lithium battery electrolyte and its effect on battery electrolyte. Among the four raw data of lithium batteries, the same raw data electrolyte is ultimately responsible for transporting lithium ions. Its quality directly affects the function of the lithium battery, and also affects the safety of the lithium battery to a certain extent. Currently, lithium batteries on the market mainly use electrolyte lithium perchlorate, lithium fluoride salt, and lithium hexafluorophosphate. Lithium battery electrolyte: Electrolyte is one of the four key data of lithium batteries (positive electrode, negative electrode, gap, electrolyte). It is claimed that the blood of the lithium battery conducts electrons between the positive electrode and the negative electrode of the battery. Lithium battery electrolyte is the carrier of ion transmission in the battery. Generally composed of lithium salt and organic solvent, it is the guarantee for lithium batteries to obtain the advantages of high voltage and high specific energy. The electrolyte is manufactured from raw materials such as high-purity organic solvents, lithium electrolyte salts, and necessary additives under certain conditions in a certain proportion. The general principles of electrolyte selection are as follows: (1) Good electrochemical stability, and does not react with positive electrode data, negative electrode data, gap, collecting fluid, binder, etc.; (2) New ion conductivity, high dielectric constant, and viscosity Low ion migration resistance; (3) Keep the liquid in a wide temperature range, generally between -40-70, which is suitable for improving the high and low temperature characteristics of the battery; (4) It can maximize the reversible reaction of the electrode, That is, the cycle efficiency is high; (5) Environmentally friendly, preferably non-toxic or low-toxic. Lithium battery electrolyte composition: lithium battery electrolyte. JPG1. Molecular formula: C3H4O3, transparent colorless liquid (>35), crystalline solid at room temperature, is a good solvent for polyacrylonitrile and polyvinyl chloride. 2. Propylene carbonate, colorless, odorless, or light yellow homogeneous liquid, soluble in water and carbon tetrachloride, and miscible with ether, acetone, benzene, etc. This product should be stored in a cool, ventilated, dry place, away from fire, and in accordance with the general rules for storage and transportation of low-toxic chemicals. 3. Diethyl carbonate, colorless liquid, slightly odor; vapor pressure is 1.33kPa/23.8; flash point 25 (flammable liquid will evaporate into vapor and flow into the air. 4. Dimethyl carbonate is a non-toxic, A chemical raw material with excellent environmental performance and a wide range of uses; at the same time, it has a higher transpiration temperature and a faster transpiration rate. 5. Methyl ethyl carbonate, a colorless and transparent liquid, is a high-tech and high-value-added chemical product in recent years. It is a good solvent for lithium battery electrolyte. This product should be stored in a cool, ventilated, dry place, in accordance with the storage and transportation rules of flammable chemicals. 6. Lithium hexafluorophosphate, white crystal or powder, strong delirium; exposed to air or heated When exposed to air or heating, lithium hexafluorophosphate flexibly differentiates due to the use of water vapor in the air, releasing PF5 and white smoke. 7. Phosphorus pentafluoride, a phosphorus-containing halogen compound. Pentafluoride Phosphorus is a colorless and odorless gas at room temperature and atmospheric pressure. Phosphorus pentafluoride is used as a catalyst for polymerization. Statement: Some pictures and content of articles published on this site are from the Internet. Please contact us if you have any infringements. Delete the previous post: What chemical substances are included in the lithium battery?