SOLID-STATE BATTERY

A solid-state battery that includes: a solid battery laminate including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer interposed between the positive electrode layer and the negative electrode layer along a lamination direction; a positive electrode terminal on a first side surface of the solid battery laminate, and the positive electrode layer is in electrical contact with the positive electrode terminal at the first side surface; and a negative electrode terminal on a second side surface of the solid battery laminate, and the negative electrode layer is in electrical contact with the negative electrode terminal at the second side surface, wherein, in a plan view of the solid-state battery, at least one of the positive electrode layer and the negative electrode layer has a tapered portion wherein a dimension thereof decreases toward the first side surface or the second side surface, respectively.