INORGANIC SOLID ELECTROLYTE-CONTAINING COMPOSITION, SHEET FOR ALL-SOLID STATE SECONDARY BATTERY, AND ALL-SOLID STATE SECONDARY BATTERY, AND MANUFACTURING METHODS FOR SHEET FOR ALL-SOLID STATE SECONDARY BATTERY AND ALL-SOLID STATE SECONDARY BATTERY

There is provided an inorganic solid electrolyte-containing composition for an all-solid state secondary battery, containing an inorganic solid electrolyte, a dispersing agent, and a dispersion medium, in which the dispersing agent satisfies the following definitions of (1) to (3), and the dispersion medium includes a dispersion medium having a boiling point of 120° C. or higher. There are also provided an inorganic solid electrolyte-containing composition, a sheet for an all-solid state secondary battery and an all-solid state secondary battery, in which this inorganic solid electrolyte-containing composition is used, as well as manufacturing methods for a sheet for an all-solid state secondary battery, and an all-solid state secondary battery. (1) An SP value is 17.0 to 22.0 MPa. (2) A molecular weight is 10,000 or less. (3) An adsorption rate with respect to the inorganic solid electrolyte in the dispersion medium is 2% or more.