ROLL-TO-ROLL, STEPWISE EXTRUSION PROCESS USING SEMI-DRY POWDER FOR MANUFACTURING A FREE-STANDING ACTIVE MATERIAL LAYER FOR A BATTERY ELECTRODE

A method for manufacturing a cathode electrode of a battery cell includes providing a dry powder mixture including an active material, a conductive additive, and a binder to a first extruder; mixing the active material, the conductive additive, and the binder in the first extruder; partially fibrillating the binder in the first extruder; supplying an admixture from the first extruder to a first input of a second extruder; supplying a solvent to a second input of the second extruder; mixing the active material, the conductive additive, the binder, and the solvent in the second extruder; fibrillating the binder in the second extruder; and forming an active material layer using an extrudate die arranged at an output of the second extruder.