Development of a three-stage drying profile based on characteristic drying stages for lithium-ion battery anodes

Based on the state of current research on battery electrode drying, a custom drying profile design is proposed and validated. It allows for drying time reduction, while the anodes' mechanical integrity is maintained. In a tripartite process, the deterioration of the active layer adhesion to the substrate that is typically observed for increased drying rates is prevented through adjusting mild drying conditions in an intermediate drying stage. This stage is confined by two high drying rate stages which allow for reduction of the total drying time by about 40% compared to a reference drying process.