The role of polymer binders has been noticed in LIB slurries as it sustains the microstructure through physical or chemical adsorption to the particles over the electrode processing. We investigate the adsorption behavior between polymer binder and particles (active materials and conductive additives) by observing the dynamics of the polymer and the rheological properties of the slurry. Employing the scattering techniques, the microstructure of particles is examined in detail.
Solid polymer electrolytes are potential replacements for liquid electrolytes to overcome safety concerns. However, their ionic conductivity at room temperature remains low due to their high crystallinity. The main limiting factor for low ionic conductivity is the slow chain motion in the crystalline phase, which hinders ion transport through segmental motion in the amorphous regions. From this respective, we investigate the effect of molecular weight and composition on the structure and ionic conductivity. And we study a correlation between the segmental dynamics and charge carrier relaxation by considering the microstructure.
Coating is an essential process in many chemical industry including battery electrode production process. In the Li-ion battery process, slurry suspension is coated on a substrate where the dispersion stability of slurry suspension is critical. We investigate the change of microstructure in complex fluid of slurry suspensions and their structural evolution during the coating and drying.