Stability Analysis of Electrode Slurries based on Static Multiple Light Scattering
Supporting the Next Generation of Batteries
The rapid growth of the new energy industry continues to drive demand for high-performance, reliable battery technologies. Lithium-ion batteries, including lithium iron phosphate (LFP) and ternary lithium batteries, play a key role in this transition. Manufacturers produce these batteries using electrode slurries, which combine the positive or negative active material with binders, additives and solvents to create a uniform coating mixture.
Why Slurry Stability Matters
The stability of an electrode slurry directly influences the quality and consistency of the finished electrode. An unstable slurry can cause active material particles to flocculate, agglomerate or sediment during storage and processing. These changes can create inconsistencies during coating and calendering, making it more difficult to achieve a uniform electrode structure. Ultimately, poor slurry stability can affect battery performance, efficiency and long-term reliability.
Factors Affecting Electrode Slurry Stability
Several factors influence the stability and performance of an electrode slurry. These include the composition and concentration of each ingredient, the particle size and particle size distribution of the active material, the viscosity of the liquid medium and the mixing conditions used during preparation.
Particle size plays a particularly important role because it can influence dispersion, sedimentation behaviour, surface interactions and the overall rheology of the slurry. Manufacturers therefore need to understand how their formulation and processing conditions affect particle behaviour throughout the slurry’s lifetime.
Optimising Battery Electrode Formulations
Developing the optimum slurry formulation requires careful control and characterisation of these factors. A well-designed formulation can improve dispersion stability while supporting the mechanical strength, electrical conductivity and processing characteristics required for high-quality electrodes.
This application note explores the use of BeScan Lab+ to evaluate electrode slurry stability, providing valuable insights into particle behaviour and helping manufacturers optimise formulations for more consistent and reliable battery production.
