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

An inorganic solid electrolyte-containing composition comprising:

• an inorganic solid electrolyte having an ion conductivity of a metal belonging to Group 1 or Group 2 in the periodic table;
• a polymer binder;
• and
• a dispersion medium,
• wherein the polymer binder has a constitutional component (X) having a polymerized chain and a constitutional component (A) having at least one functional group of the following group (a) of functional groups, contains a polymer having a constitutional component (N) containing a nitrogen atom, the polymer having a content of less than 10% by mole in all constitutional components, and is dissolved in the dispersion medium,
• <Group (a) of functional groups>
• a sulfonate group, a phosphate group, a phosphonate group, a carboxy group, a hydroxy group, an oxetane group, an epoxy group, a dicarboxylic acid anhydride group, a thiol group, an ether group, a thioether group, a thioester group, a fluoroalkyl group, and salts of these groups,
• wherein the constitutional component (X) is represented by Formula (X1) or (X2),
• in Formula (X1) and Formula (X2),
• RX1 to RX3 and RX6 to RX8 represent a hydrogen atom or a substituent,
• RX4 represents a hydrocarbon group or an alkylsilyl group,
• RX5 represents a substituent,
• RX9 represents a hydrogen atom or a substituent,
• LX1 to LX3 represent a linking group,
• LX4 represents a single bond or a linking group, and
• nX and mX indicate an average degree of polymerization and are a number of 2 or more.