All-solid-state battery and manufacturing method thereof

An all-solid-state battery comprising:

• a solid electrolyte layer;
• and
• a first electrode layer and a second electrode layer arranged with the solid electrolyte layer therebetween,
• wherein the first electrode layer and the second electrode layer respectively comprise:
• a current collector comprising an active material receiving portion, and
• an electrode active material layer disposed in the active material receiving portion and disposed on at least one surface of the current collector, and
• the active material receiving portion includes through holes spaced from each other in a first direction and a second direction that is vertical to the first direction in the current collector.

A method for manufacturing an all-solid-state battery comprising:

• forming an electrode layer on a solid electrolyte layer;
• and
• repeatedly stacking the solid electrolyte layer and the electrode layer,
• wherein the forming of the electrode layer comprises:
• forming a first active material layer on the solid electrolyte layer,
• forming a current collector having through holes in the first active material layer,
• forming second active material layers to fill the through holes, and
• forming a third active material layer on the current collector and the second active material layers, and
• the forming of the current collector includes forming first current collecting portions spaced from each other in the first direction and second current collecting portions spaced from each other in a second direction that is vertical to the first direction and crossing the first current collecting portions.