Analysis of the important components of the electrolyte of lithium battery packs

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. 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. Ethylene carbonate: Molecular formula: C3H4O3, a clear and colorless liquid (>35℃), it is a crystalline solid at room temperature. Boiling point: 248°C/760mmHg, 243-244°C/740mmHg; Flash point: 160°C; Density: 1.3218; Refractive index: 1.4158 (50°C); Melting point: 35-38°C; This product is polyacrylonitrile, polyvinyl chloride A good solvent. It can be used as a spinning fluid in textiles; it can also be used as a solvent for removing acid gas and an additive in concrete; it can be used as a pharmaceutical component and raw material in medicine; it can also be used as a plastic foaming agent and a synthetic lubricant The stabilizer; in the battery industry, it can be used as an excellent solvent for lithium battery electrolyte. 2. Propylene carbonate molecular formula: C4H6O3, colorless, odorless, or light yellow translucent liquid, soluble in water and carbon tetrachloride, and miscible with ether, acetone, benzene, etc. It is an excellent polar solvent. This product is mainly used in polymer operations, gas separation processes and electrochemistry. In particular, it is used to absorb carbon dioxide from natural gas and synthetic ammonia raw materials in petrochemical plants. It can also be used as a plasticizer, spinning solvent, olefin and aromatic extraction agent, etc. Toxicological data: No poisoning was found in animal experiments by oral or skin contact. Rat oral LD50u003d2,9000mg/kg. This product should be stored in a cool, ventilated and dry place, away from fire sources, according to general low-toxic chemicals Provision for storage and transportation. 3. Molecular formula of diethyl carbonate: C5H10O3 colorless liquid with a slight odor; vapor pressure 1.33kPa/23.8℃; flash point 25℃ (flammable liquid can volatilize into vapor and run into the air. The temperature rises, the volatilization speeds up. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete the previous article: How to configure the battery for UPS?