High-Speed Li-Ion Battery Manufacturing Process Applying the Dewatering Concept

Lithium-ion battery manufacturing is time- and energy-intensive because of the drying process. While current approaches aim to accelerate drying by reducing the amount of solvent, they compromise uniformity and pose challenges in mass production. This study introduces the dewatering concept, which is widely used in paper manufacturing, to the electrode manufacturing process and proposes a high-speed electrode manufacturing process applying dewatering (HEMPAD). It encompasses four sequential stages: casting battery slurries onto porous media, forming a filter cake through solvent dewatering, transferring the filter cake to a substrate, and subsequent drying of the filter cake. HEMPAD achieves a substantial reduction in processing time and energy consumption, effectively filtering out over 40% of the solvent during dewatering. The investigation encompasses an analysis of the microstructure…