Meaning
Particle size distribution metrics define the cumulative diameter below which ten percent of the total sample volume resides during powder analysis. The d10 value indicates the proportion of fine particles present in a batch of battery electrode powder. High quantities of these fine particles increase the surface area of the powder, which accelerates chemical reactions during slurry mixing.
Battery manufacturers specify this metric to ensure uniform coating thickness and prevent slurry gelation.
Fine Fraction
Excessively small particles increase the solvent requirement during the preparation of the electrode slurry. This increase lowers the dry solids content and extends the required drying time on the coating line.
Slurry Stability
Proper control of the d10 value prevents particle agglomeration during storage and transport. Agglomerates block filters and create surface defects on the coated foil.
Sintering Behavior
Small particles lower the required temperature during the cathode active material sintering stage. This lowering optimizes energy consumption during manufacturing while maintaining chemical purity.
