All-solid-state battery

A method for manufacturing a bipolar-type all-solid-state battery,

• wherein the bipolar-type all-solid-state battery comprises an all-solid-state battery laminate and a resin layer covering a side surface of the all-solid-state battery laminate,
• wherein the all-solid-state battery laminate comprises at least one all-solid-state unit cell in which a positive electrode current collector layer, a positive electrode active material layer, a solid electrolyte layer, a negative electrode active material layer, and a negative electrode current collector layer are laminated in this order,
• wherein at least one surface of at least one of the positive electrode current collector layer and the negative electrode current collector layer includes a laminated part and an extending part,
• wherein the laminated part is a portion which overlaps another adjacent layer, and the extending part is a portion which extends beyond the other adjacent layer,
• wherein the surface roughness of the extending part is 2.50 times or more greater than the surface roughness of the laminated part,
• wherein a surface of the extending part and the laminated part is an embossed surface,
• wherein the material of the resin layer is, an acrylic resin, a polyimide resin, a polyester resin, a polystyrene resin, a polyvinyl chloride resin, or a polycarbonate resin, and
• wherein the method comprises:
• (i) forming an embossing surface on the positive electrode current collector layer and the negative electrode current collector layer,
• (ii) providing the all-solid-state battery laminate,
• (iii) covering a side surface of the all-solid-battery laminate by resin layer.