Challenges and Opportunities for Large‐Scale Electrode Processing for Sodium‐Ion and Lithium‐Ion Battery

Abstract Sodium‐ion batteries are an emerging technology that is still at early stage of development. The electrode processing for anode and cathode expected to be similar lithium‐ion (drop‐in technology), yet a detailed comparison not published. There ongoing questions about the influence active materials on parameters such as slurry viscosity, coating thicknesses, drying times, behavior during fast drying. Herein, time same areal capacity anodes (graphite vs. hard carbon) cathodes (lithium iron phosphate Prussian blue analogs) compared based respective specific capacities reported in literature. Estimates made materials’ impact production speed or dryer length. Within experimental part, water‐based slurries composition mixed using different according identical procedure viscosity compared. When constant rate (0.75 g m −2 s −1 ), lithium electrodes with (1–3 mAh cm ) shown have highest adhesion. For high rates (3 capacity, especially investigated carbon show no binder migration occurs.