Research Status and Progress in Preparation Technology of Inorganic Solid Electrolyte for Lithium Ion Battery

Solid electrolyte is considered to be one of the effective solutions to the safety problem of lithium-ion batteries, while inorganic solid electrolytes have been widely studied because of their highest ionic conductivity. The preparation method has a great impact on the performance of inorganic solid electrolyte. Therefore, seven preparation methods of inorganic solid electrolyte, including high temperature solid phase method, sol-gel method, chemical coprecipitation method, hydrothermal, casting method, magnetron sputtering method and 3D printing method, were reviewed. The principle and research status of the above-mentioned preparation methods were discussed and their advantages and disadvantages were compared. Finally, the preparation method of inorganic solid electrolyte was prospected, in order to provide a new idea for the preparation of inorganic solid electrolyte and open up new possibilities in industrial production and scientific research.