Solid electrolyte composition, solid electrolyte-containing sheet, electrode sheet for all-solid-state secondary batteries, all-solid-state secondary battery, method for producing solid electrolyte-containing sheet, method for producing electrode sheet for all-solid-state secondary batteries, and method for manufacturing all-solid-state secondary battery

A solid electrolyte composition which contains an inorganic solid electrolyte (A) that has conductivity of ions of a metal in group 1 or group 2 of the periodic table, a dispersion medium (B) that has a LogP value of 1.2 or less and a dispersion medium (C) that has a LogP value of 2 or more, and wherein the mass ratio of the dispersion medium (C) to the dispersion medium (B), namely the mass ratio (C)/(B) satisfies 100,000 ≥ (C)/(B) ≥ 10; a solid electrolyte-containing sheet; an all-solid-state secondary battery; a method for producing a solid electrolyte-containing sheet; and a method for manufacturing an all-solid-state secondary battery.