FLEXIBLE FRAME FOR USE IN APPLYING HIGH PRESSURE IN THE MANUFACTURE OF A SOLID-STATE BATTERY CELL

Systems and methods of producing a solid-state battery cell using an isostatic press system to apply a substantially uniaxial load on the flat surfaces of the cell, while limiting or eliminating the pressure applied to the sides and outside of the cell. The cell frame is provided that may include a top plate and a bottom plate between which the battery cell may be located. The top and bottom plates of the frame may include a hollow center covered with a polymer or other flexible, liquid-impervious, material. An outer portion of the top and bottom plates may comprise a frame to support the polymer center portion. In some implementations, the frame may comprise a metal material.