SOLID ELECTROLYTE, METHOD FOR MANUFACTURING THE SAME, AND BATTERY

A solid electrolyte, a method for manufacturing the solid electrolyte, and a battery are disclosed. The solid electrolyte includes a polymer, a silver salt, and an alkali metal salt. When the solid electrolyte provided in the present disclosure is matched with a metal such as lithium metal, a gradient SEI layer rich in inorganic components can be in-situ generated during electrochemical cycling. The gradient SEI layer includes an outer layer rich in silver-containing inorganic components and an inner layer rich in lithium-containing inorganic components. Thus, the battery possesses high ionic conductivity and stability against the lithium metal anode, and the in-situ constructed SEI layer can uniformize lithium ion deposition, inhibit lithium dendrite growth, realize stable cycling under high current, and exhibit excellent low-temperature electrochemical performance.