Solid-state cell edge taper system and method

A multi-layer battery assembly comprising a cathode current collector layer, a cathode active material layer, a solid-state electrolyte layer, a lithium plating layer, and an anode current collector layer, wherein:

• the cathode active material layer is positioned between and in contact with the cathode current collector layer and the solid-state electrolyte layer;
• the solid-state electrolyte layer is positioned between and in contact with the cathode active material layer and the lithium plating layer;
• the lithium plating layer is positioned between and in contact with the solid-state electrolyte layer and the anode current collector layer;
• and
• the cathode active material layer comprises a tapered edge extending between the cathode current collector layer and the solid-state electrolyte layer.

A wafer comprising a plurality of interconnected multi-layer battery assemblies, wherein each multi-layer battery assembly of the plurality of interconnected multi-layer battery assemblies comprises a cathode current collector layer, a cathode active material layer, a solid-state electrolyte layer, and an anode current collector layer, and wherein:

• the cathode active material layer is positioned between and in contact with the cathode current collector layer and the solid-state electrolyte layer;
• the solid-state electrolyte layer is positioned between and in contact with the cathode active material layer and the anode current collector layer;
• and
• the cathode active material layer comprises a tapered edge extending between the cathode current collector layer and the solid-state electrolyte layer.