All-solid-state battery positive electrode and all-solid-state battery

An all-solid-state battery comprising:

• an all-solid-state battery positive electrode comprising a positive electrode active material layer formed on a positive electrode current collector;
• an all-solid-state battery negative electrode comprising a negative electrode active material layer formed on a negative electrode current collector;
• and
• a solid electrolyte layer disposed between the all-solid-state battery positive electrode and the all-solid-state battery negative electrode,
• wherein
• the positive electrode active material layer comprises a plurality of inclined portions provided on an outer circumference thereof,
• the positive electrode active material layer comprises a first positive electrode active material layer formed on one main surface of the positive electrode current collector,
• the positive electrode active material layer further comprises a second positive electrode active material layer formed on another main surface of the positive electrode current collector,
• the first positive electrode active material layer has a rectangular shape in a plan view,
• the second positive electrode active material layer has a rectangular shape in a plan view,
• the inclined portion includes a first inclined portions formed on the first positive electrode active material layer, and a second inclined portion formed on the second positive electrode active material layer,
• the inclined portion is configured as a tapered portion defined by the first inclined portion and the second inclined portion in which an inclination angle of the first inclined portion and an inclination angle of the second inclined portion are same as each other with respect to an in-plane direction of the positive electrode active material layer, in a side view of the all-solid-state battery positive electrode, and
• a ratio Qa/Qc of an electrical capacity Qc (mAh) of the positive electrode active material layer to an electrical capacity Qa (mAh) of the negative electrode active material layer at a portion of an outer circumference of the negative electrode active material layer facing the second inclined portion or the first inclined portion is 1.0 or more.