All-solid battery and method of manufacturing the same

An all-solid battery comprising:

• a positive-electrode layer that includes (i) a positive-electrode current collector, (ii) a positive-electrode bonding layer that contains at least a first conductive agent comprising non-metal and is formed on the positive-electrode current collector, and (iii) a positive-electrode mixture layer that contains at least a positive-electrode active material and a solid electrolyte having ion conductivity and is formed on the positive-electrode bonding layer;
• a negative-electrode layer that includes (i) a negative-electrode current collector and (ii) a negative-electrode mixture layer that contains at least a negative-electrode active material and a solid electrolyte having ion conductivity;
• and
• a solid electrolyte layer that is disposed between the positive-electrode mixture layer and the negative-electrode mixture layer and contains at least a solid electrolyte having ion conductivity,
• wherein a concentration of a binder contained in the positive-electrode mixture layer is less than or equal to 100 ppm and a concentration of a solvent contained in the positive-electrode mixture layer is less than or equal to 50 ppm, and
• wherein as viewed from a direction perpendicular to a stacking direction of the all-solid battery, a part of at least one of the positive-electrode active material and the solid electrolyte that are contained in the positive-electrode mixture layer overlaps the positive-electrode bonding layer, and a thickness of a region in the stacking direction is in a range of 2 μm to 6 μm, inclusive, the region being a region where the positive-electrode mixture layer overlaps the positive-electrode bonding layer.