ALL SOLID STATE SECONDARY BATTERY, SOLID ELECTROLYTE COMPOSITION USED THEREFOR, ELECTRODE SHEET FOR BATTERY USING THE SAME, AND METHOD FOR MANUFACTURING ELECTRODE SHEET FOR BATTERY AND ALL SOLID STATE SECONDARY BATTERY

To provide an all solid state secondary battery capable of realizing favorable bonding properties and a favorable ion conductivity. Provided is an all solid state secondary battery having a structure in which an electrode layer is located between a collector and an inorganic solid electrolyte layer, in which the electrode layer contains an inorganic solid electrolyte having a conductivity of ions of metals belonging to Group I or II of the periodic table, an active material, and a specific polymer described below, specific polymer: a polymer having at least one specific functional group selected from acidic functional groups, amide groups, or hydroxyl groups.