Binder for solid electrolyte battery, slurry, electrode, and solid electrolyte battery

A binder for a solid-state electrolyte battery, comprising a polymer comprising a segment A having a glass transition temperature of 25° C. or less and a segment B having a melting point of 50° C. or more,

• wherein
• the segment A of the polymer comprises vinylidene fluoride unit and at least one selected from the group consisting of repeating units represented by any of the following formulas:
• wherein Rf1 is a linear or branched fluorinated alkyl group or fluorinated alkoxy group having 1 to 12 carbon atoms, and, when the number of carbon atoms is 2 or more, optionally includes oxygen atom between carbon atoms thereof,
• —CHF—CHRf2— Formula:
• wherein Rf2 is a linear or branched fluorinated alkyl group or fluorinated alkoxy group having 1 to 12 carbon atoms, and, when the number of carbon atoms is 2 or more, optionally includes oxygen atom between carbon atoms thereof,
• the segment B of the polymer comprises vinylidene fluoride unit,
• a content of vinylidene fluoride unit in the segment A of the polymer is 94 to 15 mol % based on all monomer units constituting the segment A,
• a content of vinylidene fluoride unit in the segment B of the polymer is 97 mol % or more based on all monomer units constituting the segment B.