Storage Battery Electrode Slurry pH Control to Prevent Binder Gelation

The patent introduces a conductive additive as an intermediary substance between the binder and active material. This conductive additive serves dual functions: it maintains electrical conductivity pathways while enabling effective binding. The binder binds to the conductive additive rather than directly to active materials, allowing the conductive additive to form a conductive network that connects active materials to the current collector without requiring excessive binder content, thus preserving discharge capacity.

The patent merges multiple functions into a single integrated manufacturing process. The slurry preparation step simultaneously achieves uniform mixing of active material, conductive additive, and binder; the coating process deposits the electrode layer with controlled thickness; and the drying process removes solvent while maintaining the conductive network structure. This integrated approach eliminates the need for separate processing steps for each function, reducing manufacturing complexity while ensuring high capacity and stability through proper material distribution and conductive network formation.

The patent controls electrode thickness and uniformity by adjusting slurry parameters such as viscosity, solids content, and composition ratios before coating. By optimizing the slurry formulation and coating conditions, the process achieves uniform thickness deposition even at higher thickness levels required for high capacity. The conductive additive network formation is also controlled through parameter optimization, ensuring consistent electrical properties throughout the electrode thickness.