Dürr has introduced a new technology in battery manufacturing, named X.Cellify DC, which represents a significant advancement in the production of lithium-ion batteries. This innovative dry electrode coating process forms a free-standing film from active battery material that remains recyclable until it is laminated onto the collector foil. According to Dürr, this technique not only reduces waste but also enhances the efficiency and sustainability of battery manufacturing.
The conventional method for producing battery electrodes involves wet coating processes where slurry is applied to metal foils and dried in energy-intensive ovens. The X.Cellify DC system replaces these with a solvent-free approach using dry powder mixtures, which are pressed into films via the Activated Dry Electrode process provided by LiCAP Technologies.
The stages of this new method include dosing, film formation, densification, and lamination onto the collector foil. Dürr claims that their dry coating technology offers substantial benefits in terms of production space and energy consumption reductions – up to 65% less floor space and a 70% decrease in energy usage due to the elimination of drying ovens and solvent recovery systems.
The ability to recycle defective free-standing films back into the manufacturing process also reduces material waste, ensuring that no valuable active materials are discarded. This closed-loop quality control system significantly cuts down on scrap rates and reinforces Dürr’s commitment to sustainable battery production.
Bernhard Bruhn, Vice President of Dürr’s Global Business Unit LIB, highlighted that “the successful proof of concept marks a significant milestone for our company.” He further explained the potential scalability of this dry coating process, stating it can be adapted for solid-state batteries as well. This technology paves the way for initial pilot projects in various industrial applications.
