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A. Microstructure of electrode for Lithium-ion Battery
A. Microstructure of electrode for Lithium-ion Battery
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.
Representative paper
Conformation-Driven Dispersion Control of Carbon Black by Carboxymethyl Cellulose: Implication for Binder-Particle Interactions (ACS Applied Polymer Materials, 2025)
B. Behind the Ion Conduction Mechanism in Solid Polymer Electrolytes
B. Behind the Ion Conduction Mechanism in Solid Polymer Electrolytes
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.
Representative paper
C. Rheological Properties and Polymer Dynamics of PLA-Polymer Nanocomposites
C. Rheological Properties and Polymer Dynamics of PLA-Polymer Nanocomposites
Polylactic-acid (PLA) is the most representative biopolymer, which is expected to be a sustainable polymer in the future based on its biodegradability and biocompatibility. It is necessary to utilize PLA more effectively in the industrial field and creating PLA nanocomposites by incorporating nanoparticles (NPs) can be a good way to improve various properties.
The property enhancement originates from the interfacial layer formed by polymer adsorption to the NPs based on particle-polymer interactions. Therefore, it is very essential to analyze polymer dynamics and microstructures and identify the correlation between them and their properties. We aim to investigate the relationship between the properties of PLA nanocomposites by analyzing the microstructure and polymer dynamics of interfacial layer according to the incorporation of NPs through various ways for PLA nanocomposites under various conditions. In addition, we are interested in the changes in biodegradability and its mechanisms following the incorporation of NPs.
Representative paper
B. Lignin-based Polymer Nanocomposites
B. Lignin-based Polymer Nanocomposites
Lignin is a biodegradable organic polymer, the second most abundant material after cellulose in most plants. While it has been considered as a by-product of the pulping process, often disposed or incinerated for heat generation, there has been growing interest in academia and industry.
Recent research suggests diverse applications of lignin that focus on enhancing material properties and endowing potential functionalities through the utilization of lignin nanoparticles (LNP) in polymer nanocomposites (PNCs).
We have investigated the impact of LNP on the microstructure and properties of PNCs. Specifically, we are interested in how LNP affects the dynamics and rheological and thermal properties of the PNC system.
Representative paper
Entanglement-Mediated Dispersion of Lignin Nanoparticles in PVA Networks for Transparent and Tough Bio-Composites (Polymers, 2026)
C. Coatings for Sustainable Energy
C. Coatings for Sustainable Energy
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.
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