Slurry, production method for solid electrolyte layer, production method for electrode active material layer, and production method for all-solid-state battery

A slurry comprising:

• a sulfide solid electrolyte material;
• and
• a dispersion medium comprising at least one selected from the group consisting of tertiary amine;
• ether;
• thiol;
• ester having a functional group of a 3 or more carbon number bonded with a carbon atom of an ester bonding and a functional group of a 4 or more carbon number bonded with an oxygen atom of the ester bonding;
• and ester having a benzene ring bonded with a carbon atom of an ester bonding,
• wherein the sulfide solid electrolyte material uses a material composition including Li2S and P2S5.

A production method for a solid electrolyte layer comprising:

• a mixing step of preparing a solid electrolyte layer forming slurry by mixing a sulfide solid electrolyte material, and a dispersion medium comprising at least one selected from the group consisting of tertiary amine;
• ether;
• thiol;
• ester having a functional group of a 3 or more carbon number bonded with a carbon atom of an ester bonding and a functional group of a 4 or more carbon number bonded with an oxygen atom of the ester bonding;
• and ester having a benzene ring bonded with a carbon atom of an ester bonding;
• a coating step of forming a solid electrolyte layer forming coating film by applying the solid electrolyte layer forming slurry on a substrate;
• and
• a drying step of forming a solid electrolyte layer by drying the solid electrolyte layer forming coating film,
• wherein the sulfide solid electrolyte material uses a material composition including Li2S and P2S5.

A production method for an electrode active material layer comprising:

• a mixing step of preparing an electrode active material layer forming slurry by mixing an electrode active material, a sulfide solid electrolyte material, and a dispersion medium comprising at least one selected from the group consisting of tertiary amine;
• ether;
• thiol;
• ester having a functional group of a 3 or more carbon number bonded with a carbon atom of an ester bonding and a functional group of a 4 or more carbon number bonded with an oxygen atom of the ester bonding;
• and ester having a benzene ring bonded with a carbon atom of an ester bonding;
• a coating step of forming an electrode active material layer forming coating film by applying the electrode active material layer forming slurry on a substrate;
• and
• a drying step of forming an electrode active material layer by drying the electrode active material layer forming coating film,
• wherein the sulfide solid electrolyte material uses a material composition including Li2S and P2S5.