Enabling Li3.75Si alloy coupled with Argyrodite Electrolyte with Desirable Performance for All-solid-state Batteries

With excellent safety and outstanding energy density, all-solid-state batteries is of a prospect for surpassing liquid Li+ batteries. Li6PS5Cl, exhibits desirable ductility and good Li+ conduction property, which is the most commonly used solid-state electrolyte. Herein, Li3.75Si alloys have been prepared by high energy milling technology as an anode to couple with NCM811 cathode and demonstrated an outstanding capacity. During the charging/discharging process, a microstructural defect surface was obtained, and a large impedance interface was verified by EIS tests.