What are the differences between the composition of lithium battery electrolyte and battery electrolyte

Lithium battery electrolyte components 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. The electrolytes currently used in lithium batteries on the market are lithium perchlorate, lithium fluoride salt, lithium hexafluorophosphate and so on. 1. Ethylene carbonate: molecular formula: C3H4O3, transparent and colorless liquid (>35℃), crystalline solid at room temperature, it is a good solvent for polyacrylonitrile and polyvinyl chloride. 2. Propylene carbonate, colorless, odorless, or light yellow translucent 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 stored and transported in accordance with the regulations of general low-toxic chemicals. 3. Diethyl carbonate, a colorless liquid with a slight odor; vapor pressure 1.33kPa/23.8°C; flash point 25°C (flammable liquid can volatilize into vapor and run into the air. 4. Dimethyl carbonate is a A non-toxic, environmentally friendly, and versatile chemical raw material; at the same time, it has a higher evaporation temperature and a faster evaporation rate. 5. Ethyl methyl carbonate, a colorless and translucent liquid, is a high-tech, high-additional liquid that has emerged in recent years A valuable chemical product, an excellent solvent for lithium battery electrolyte, this product should be stored in a cool, ventilated, dry place, and stored and transported in accordance with the regulations for flammable chemicals. 6. Lithium hexafluorophosphate, white crystal or powder, with strong deliquescence; Analysis when exposed to air or heating, lithium hexafluorophosphate is quickly analyzed in the air due to the use of water vapor when exposed to air or heated, and PF5 is released and white smoke appears. 7. Phosphorus pentafluoride is a phosphorus halide compound. Phosphorus pentafluoride It is a colorless malodorous gas under normal temperature and pressure, which has strong irritation to the skin, eyes, and mucous membranes. Phosphorus pentafluoride is used as a catalyst for polymerization. The preparation of battery electrolyte The electrolyte of lead-acid batteries is a dilute sulfuric acid solution , It is prepared with water and concentrated sulfuric acid. The quality of the electrolyte has a great influence on the service life and capacity of the battery, so you must master the correct preparation method. The electrolyte of the lead-acid battery must use the special sulfuric acid of the battery. It must be clarified, colorless, and odorless; the content of iron, arsenic, manganese, chlorine, nitride, etc. cannot exceed the standard. The electrolyte of the lead-acid battery is a dilute sulfuric acid solution, which is prepared with water and concentrated sulfuric acid. The electrolyte is made of special sulfuric acid and Distilled water is prepared in a certain proportion, the density is generally 1.24-1.30 grams per cubic centimeter. The specific gravity is 12.75-12.85G/CM3 sulfuric acid plus pure water. If the water is consumed during the battery use, add pure water to charge. For example, lead The electrolyte of the acid battery is prepared by a certain proportion of 80% sulfuric acid and distilled water to form a cubic density of 1.24-1.30g/cm3. The specific gravity is 12.75-12.85g/cm3, and some lead-acid batteries (such as motorcycle lead-acid batteries) are electrolyzed The liquid must be filled by itself, so be careful when filling, and never get into the eyes. The electrolyte can generally be 1.280 sulfuric acid, and 1%-2% sodium sulfate can be added. Sulfuric acid is chemical Pure is fine. When preparing the electrolyte of lead-acid batteries, pay attention to its concentration and viscosity. Different types of batteries have different requirements for electrolyte concentration, depending on the characteristics of battery power supply, battery structure, and working environment. Considerations. When choosing the concentration of the electrolyte solution of the electric battery, the working environment temperature of the battery should also be considered. When working in cold temperatures, the electrolyte concentration should be higher, and in hot temperatures, the electrolyte concentration can be lower. Disclaimer: This site Some pictures and content of the published article are from the Internet. If there is any infringement, please contact to delete the previous article: What material is made of a lithium battery?