Research Status of Low-Temperature Electrolyte Additives for Lithium-ion Batteries

Abstract Lithium-ion batteries have been the most promising energy storage technology in the field of new energy due to their advantages such as high specific energy. With the further expansion of the application range, higher requirements are placed on the low-temperature performance of the battery. The development of suitable electrolyte additives to improve the interface structure of the electrode and the electrolyte is an effective and economically feasible method to improve the low-temperature performance of the battery. This article reviews the research progress of low-temperature electrolyte additives for lithium-ion batteries in recent years. It summarizes the action mechanism of low-temperature electrolyte additives from three aspects: organic solvent additives, lithium salt additives, and new additives. The development of low-temperature electrolyte additives in the next step was prospected.