A dry cathode electrode refers to a cathode manufacturing process where the active materials are formed into an electrode without using traditional liquid solvent-based slurries. In typical battery production, cathode materials are mixed with binders and solvents to create a slurry, which is then coated onto foil and dried (evaporating the solvents). In a “dry” process, the cathode material and binder might be combined in a solvent-free way (for example, by mechanical compression or using binders that are melted or applied dry) to produce a film that can be directly laminated onto the current collector. The promise of dry electrode technology includes eliminating possibly harmful solvents (like NMP, commonly used for PVDF binder), reducing energy usage (no ovens needed for drying), and potentially improving throughput. It can also eliminate the complexity of solvent recovery systems and reduce waste.
