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. An all-solid-state battery, comprising:
a cathode substrate;
a cathode portion;
a solid electrolyte layer including an amorphous sulfide-based solid electrolyte;
an anode portion; and
an anode substrate, wherein
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, and does not include an anode active material.
2. The all-solid-state battery of claim 1 , wherein the first solid electrolyte of the cathode portion is an amorphous sulfide-based solid electrolyte.
3. The all-solid-state battery of claim 1 , wherein the second solid electrolyte of the anode portion is a crystalline sulfide-based solid electrolyte.
4. The all-solid-state battery of claim 1 , wherein the first anode portion includes 80 to 95 wt % of the second solid electrolyte, 5 to 20 wt % of the conductive material, and 2 to 10 wt % of the binder.
5. The all-solid-state battery of claim 1 , wherein a porosity of the first anode portion is between 2 and 15%.
6. The all-solid-state battery of claim 1 , wherein the metal foil of the second anode portion is composed of lithium.
7. The all-solid-state battery of claim 1 , wherein a thickness of the second anode portion is between 2 and 50 μm.