All solid state battery and manufacturing method thereof
An all-solid-state battery includes: a cathode substrate; a cathode portion; a solid electrolyte layer; an anode portion; and an anode substrate. The cathode portion includes a cathode active material, a first solid electrolyte, a conductive material, and a binder, the anode portion is configured by a first anode portion having a pore structure and a second anode portion having metal foil, and the first anode portion includes a second solid electrolyte, a conductive material, and a binder.
1. A manufacturing method of an all-solid-state battery, comprising:
forming a cathode portion by applying a cathode slurry containing a cathode active material, a first solid electrolyte, a conductive material, and a binder to a cathode substrate;
drying the cathode slurry applied to the cathode substrate;
forming a solid electrolyte layer by applying an amorphous sulfide-based solid electrolyte to the cathode portion;
drying the solid electrolyte applied to the cathode portion;
forming a first anode portion by applying an anode slurry including a second solid electrolyte, a conductive material, and a binder to the solid electrolyte layer;
drying the anode slurry applied to the solid electrolyte layer;
forming a second anode portion having metal foil on the first anode portion;
forming an anode substrate on the second anode portion; and
compressing the anode substrate,
wherein the first anode portion does not comprise an anode active material.