Research Progress of Lithium-ion Battery Electrolyte

Research on the electrolyte of lithium-ion batteries can enhance battery performance, reduce production costs, and make battery application scenarios more extensive. At the same time, better electrolytes can promote the development of industries, such as the new energy industry and the chemical industry, enabling batteries to provide more convenience for human society and offer more benefits to the development of science and technology. However, the current electrolytes still have significant drawbacks, such as poor stability at high voltages, flammability and volatility. This has led to lithium-ion batteries being prone to explosion and combustion accidents, with insufficient safety and stability, and their application environments being relatively limited. This article focuses on enhancing the properties of electrolytes from three aspects: solution, electrolyte, and additive. Summarized ether and sulfone solutions; LiPF6, LiFSI and LiDFOB substances are mixed as electrolytes. The advantages and disadvantages of film-forming additives and flame-retardant additives in improving the performance of electrolytes. It has reference significance for the application of electrolyte components under different conditions.