Review of low-temperature electrolyte of lithium-ion batteries for near space vehicle

Higher demands have been placed on the power system of near-space missions due to the low-temperature environment. Lithium-ion batteries (LIBs), the primary power source for space systems, have significant technical obstacles to normal operation in harsh environments due to their rapid capacity deterioration and eventual battery failure at below-freezing temperatures. E For LIBs to function at low temperatures, electrolyte—including bulk electrolyte and solid electrolyte interface (SEI) film—is essential. Therefore, the development of advanced electrolyte for low-temperature conditions is important for the operation of LIBs in extremely cold environments. The design status of the low-temperature electrolyte of LIBs for near-space vehicles was evaluated, along with a summary of pertinent strategies to improve the LIBs of electrolyte for low-temperature conditions, with the goal of identifying the factors limiting the low-temperature performance of LIBs. This work provides a feasible strategy for the development of Energy storage equipment in near-space vehicles.