Method For Restoring Ion Conductivity Of Sulfide Based Solid Electrolyte, Sulfide Based Solid Electrolyte With Ion Conductivity Recovered Through Method, And Lithium Ion Secondary Battery Comprising Solid Electrolyte

Abstract: The present invention relates to a method for restoring ion conductivity of a sulfide-based solid electrolyte, a sulfide-based solid electrolyte with ion conductivity restored by the method, and a lithium-ion secondary battery comprising the solid electrolyte, the method comprising the steps of: a) making a sulfide-based solid electrolyte with decreased ion conductivity come in contact with a solvent having a dielectric constant of less than 7; and b) drying the solid electrolyte in contact with the solvent.

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