Fuente: WIPO "organic farming" An all-solid-state battery according to present disclosure includes a cell stack including a solid electrolyte layer, and a positive electrode layer and a negative electrode layer with the solid electrolyte layer disposed therebetween, and an outermost layer disposed on one surface or both surfaces of the cell stack in a stacking direction of the positive electrode layer, the solid electrolyte layer, and the negative electrode layer. The outermost layer includes an epoxy resin and glass particles, and the glass particles include a boron (B) oxide, a silicon (Si) oxide, and an aluminum (Al) oxide.