Flexible frame for use in applying high pressure in the manufacture of a solid-state battery cell

A method for applying force to layers of a solid-state battery cell, the method comprising:

• loading the solid-state battery cell in a first plate of a frame, the first plate comprising a first rigid outer perimeter and a first inner portion comprising a flexible material covering the inner portion;
• mating the first plate with a second plate to encase the solid-state battery cell within the frame between the second plate and the first plate, the second plate comprising a second rigid outer perimeter and a second inner portion comprising a second flexible material covering the inner portion;
• and
• pressurizing, through an isostatic press, the solid-state battery cell, the isostatic press applying a pressing force to a layer of the solid-state battery cell through the first inner portion and the second inner portion via the flexible material.

A frame for a high-pressure environment, the frame comprising:

• a first plate comprising a first rigid outer perimeter frame and a first inner portion comprising a first flexible material covering the first inner portion;
• a second plate for mating with the first plate, the second plate comprising a second rigid outer perimeter frame and a second inner portion comprising a second flexible material covering the second inner portion;
• and
• wherein the second plate comprises an inset to receive an electrochemical object to position the electrochemical object between the first plate and the second plate when mated, the flexible material covering the first inner portion and the second inner portion providing for an isostatic pressurizing of a least a portion of the electrochemical object via a press applying a pressing force through the first flexible material and the second flexible material onto electrochemical object.