Known as the "blood" of lithium batteries, electrolyte is a key core material ensuring the charging and discharging functions of batteries. Together with cathode, anode, and separator, it constitutes the four major main materials of lithium batteries. Recently, as the new energy industry's requirements for battery energy density and safety continue to rise, the technological innovation and market application of electrolyte have attracted widespread attention. Electrolyte consists of three core components: organic solvents, lithium salts, and additives. Organic solvents are mostly carbonate compounds, such as ethylene carbonate (EC) and dimethyl carbonate (DMC), mixed in specific proportions; lithium salts are mainly lithium hexafluorophosphate (LiPF6), with new types like lithium bis(fluorosulfonyl)imide (LiFSI) gradually being promoted; additives are selected according to functional needs, such as film-forming additive fluoroethylene carbonate (FEC) and flame-retardant additive phosphate compounds. Although its production process is relatively simple, it requires precise temperature control under the protection of inert gas, completed through multiple processes including solvent dehydration, lithium salt dissolution, additive mixing, testing and filling, with strict requirements on indicators such as moisture and purity. The core technical indicators of electrolyte include conductivity, density, moisture, acidity, etc. Among them, conductivity directly affects lithium ion transmission efficiency, which usually needs to be maintained between 5-15mS/cm; moisture content must be controlled below 20ppm to avoid lithium salt reactions; excessive acidity will corrode the internal structure of the battery and affect cycle performance. An ideal electrolyte needs to balance characteristics such as high dielectric constant, low viscosity, and wide electrochemical window, but trade-offs are often required in actual formulations. Although the development of all-solid-state batteries has brought potential impacts to the electrolyte industry, the current solid-state battery technology is not yet mature. In the short term, liquid lithium batteries will still dominate the market, and the market demand for the electrolyte industry will remain stable. In the future, with formula optimization and the development of new materials, electrolyte will play a more important role in improving battery energy density, low-temperature performance, and safety. For more information, you can click: https://www.tiktok.com/@mia_iot