1 Electrode Manufacturing

Active materials, conductive additives, binders, and solvents are combined into a uniform slurry. Precise mixing ensures consistent composition and viscosity, which are critical for even coating and stable battery performance.

The wet slurry is applied onto current collector foils (typically copper for anode, aluminium for cathode) using a controlled coating process e.g. slot die.

In the drying stage, solvents are carefully removed by passing the coated foil through temperature and airflow-controlled ovens. This step must balance speed and uniformity to prevent cracking, delamination, or pore collapse in the electrode.

The dried electrodes are compressed between rollers to achieve the desired thickness, porosity, and density. This step improves electrode conductivity, adhesion, and energy storage efficiency.

Dry electrode manufacturing removes the need for wet slurry mixing and solvent removal processes, using dry powders to form a film directly on foil or as a free-standing layer. It cuts energy use, and avoids harmful chemicals, simplifying production and enabling new materials.

Wide rolls of coated electrode sheets are slit into narrower strips sized for specific cell formats. Clean, burr-free slitting is essential for safe handling and precise stacking or winding in cell assembly.

Final drying is done under vacuum at elevated temperatures to remove residual moisture and solvents. This step is crucial to prevent unwanted reactions in the finished battery cell.