Method for producing solid electrolyte material-containing sheet
A main object of the present invention is to provide a method for producing a solid electrolyte material-containing sheet excellent in strength. The present invention attains the object by providing a method for producing a solid electrolyte material-containing sheet comprising the steps of: preparing a raw material composition containing a sulfide solid electrolyte material and a binder composition containing a monomer or oligomer having a double bond and a radical polymerization initiator; applying the raw material composition to form a sheet-shaped composition; and polymerizing the sheet-shaped composition by radical polymerization.
1. A method for producing a solid electrolyte material-containing sheet comprising the steps of:
preparing a raw material composition containing a sulfide solid electrolyte material, and a binder composition having a monomer or oligomer having a double bond and a radical polymerization initiator;
applying the raw material composition to form a sheet-shaped composition; and
polymerizing the sheet-shaped composition by radical polymerization.
2. The method for producing a solid electrolyte material-containing sheet according to claim 1 , wherein the double bond is an Si═O bond or a C═C bond.
3. The method for producing a solid electrolyte material-containing sheet according to claim 1 , wherein the sulfide solid electrolyte material is a glass-based sulfide solid electrolyte material or a crystal-based sulfide solid electrolyte material.
4. The method for producing a solid electrolyte material-containing sheet according to claim 3 , wherein the glass-based sulfide solid electrolyte material is a Li 2 S—P 2 S 5 material, a Li 2 S—Sb 2 S 3 material, a Li 2 S—SiS 2 material, a Li 2 S—GeS 2 material, or a Li 2 S—B 2 S 3 material.
5. The method for producing a solid electrolyte material-containing sheet according to claim 3 , wherein the crystal-based sulfide solid electrolyte material is a thiolisicon material.
6. The method for producing a solid electrolyte material-containing sheet according to claim 1 , wherein the radical polymerization initiator is a thermal radical polymerization initiator or a photo-radical polymerization initiator.
7. The method for producing a solid electrolyte material-containing sheet according to claim 1 , wherein the solid electrolyte material-containing sheet is a solid electrolyte layer-forming sheet.
8. The method for producing a solid electrolyte material-containing sheet according to claim 1 , wherein the raw material composition further contains an electrode active material, and wherein the solid electrolyte material-containing sheet is an electrode layer-forming sheet.
9. A method for producing a solid state battery wherein a solid electrolyte material-containing sheet obtained by the method for producing a solid electrolyte material-containing sheet according to claim 1 is used.