Battery Safety: From Lithium-Ion to Solid-State Batteries

With the continuous expansion of lithium-ion battery production and application scenarios, the safety issue of lithium-ion battery has gradually become prominent, which has attracted extensive attention of the academia and industry. Employing solid electrolyte to replace liquid electrolyte to develop solid-state batteries (SSBs) is expected to improve battery performance while ensuring battery safety. This paper will analyze the safety accidents of LIBs taken place in recent years and discuss the characteristics of these safety accidents, then the current strategies to improve the safety of LIBs; Furthermore, new opportunities will be discussed that the SSBs may encounter for designing battery of intrinsic safety, passive and active safety strategies at the material, cell, and system levels.