White paper – Optimising Electrode Quality: Controllng Air in Battery Slurries for Superior Coating Performance
About this white paper
Recently, UKBIC has focused on a key manufacturing challenge: air entrainment in electrode slurries during slot-die coating. Air bubbles introduced during mixing and slurry delivery can lead to voids in coated electrodes, compromising battery performance, reliability, and safety.
To address this, UKBIC adopted a holistic approach combining process optimisation, formulation adjustments, and equipment redesign. This work included developing physics-based models to predict degassing behaviour, implementing design improvements to slurry delivery systems, and refining coating parameters to maintain bead stability.
This white paper outlines the tools and methodologies developed to understand the underlying physics, the modifications made to mitigate air entrainment, and the best practices established to improve manufacturing yield and product quality.
The authors
Dr Helen Walker
Senior Simulation Engineer
UKBIC
