Film based on nano sulfide solid electrolyte, preparation method and application

The invention discloses a film based on nano sulfide solid electrolyte, a preparation method and application, and belongs to the technical field of solid electrolytes.The preparation method comprises the steps that 1, 0.1-20 parts by weight of binder and 50-100 parts by weight of nano-sized sulfide solid electrolyte are added into an inert solvent and mixed to be uniform under the closed condition, and slurry is obtained; and (2) coating a substrate with the slurry obtained in the step (1), drying, and pressing to obtain the film based on the nano sulfide solid electrolyte. The nano sulfide solid electrolyte, the inert solvent and the binder are used as raw materials, the chemical stability of the nano sulfide solid electrolyte is ensured, and meanwhile, the size effect among the raw materials and the specific preparation method are utilized; the preparation of the ultrathin sulfide electrolyte film with high density, low porosity, low impedance and high ionic conductivity is realized. 本发明公开了一种基于纳米硫化物固体电解质的薄膜