All-solid-state rechargeable battery, stacked rechargeable all-solid-state battery, and manufacturing method thereof

A method of manufacturing an all-solid-state rechargeable battery, the method comprising:

• manufacturing a stacked body in which solid electrolyte layers are stacked on both surfaces of a first electrode layer that is either a positive electrode layer or a negative electrode layer, a second electrode layer that is the other of the positive electrode layer or the negative electrode layer is stacked on the outer surface of each solid electrolyte layer, a thin current-collecting portion that electrically connects the first electrode layer to an external wire is disposed to protrude outward from the first electrode layer, and a current-collecting portion protection member that protects the current-collecting portion is arranged to wrap the current-collecting portion;
• the stacked body further includes an insulating layer covering a side end surface of the first electrode layer,
• pressurizing the stacked body in the stacking direction;
• and
• removing the current-collecting portion protection member after the pressurizing, resulting in a side end surface of the insulating layer on the side from which the current-collecting portion protrudes having a roughened portion with a surface roughness that differs from that of another side end surface of the insulating layer.