Research

Research Overview

We research material synthesis and surface modification using a unique process called “the solution plasma process (SPP)”. By leveraging this technique, we develop cluster catalysts and electrode materials for applications in rechargeable batteries and fuel cells. Focusing on the unique physicochemical properties of water, we explore the potential of using this process to create materials with new functionalities and purposes.

What is the Solution Plasma Process (SPP)

The solution plasma process (SPP), a liquid-phase plasma, is the method that the chemical reactions are driven by the generation of plasma in liquid environment. The strongly non-equilibrium plasma can initiate various reactive species and thus chemical reactions. By using the SPP, the use of reducing agent can be eliminated and the process is done with high speed reaction. Furthermore, because it is a low-temperature atmospheric-pressure plasma; we can generate a variety of plasmas by choosing the combinations of solvents and solutes in solutions. To synthesize in a large volume, continuous cyclic reactors containing several electrodes in one reactor is constructed.

Research Topics

1. Fuel Cell (FC) Catalysis and Oxygen Reduction Reaction (ORR)

– Pt-based and Pt-free catalyst design for ORR
– Core–shell structured catalysts (e.g., Pt-M, PtNi, PtCo, PtIr, Pt alloys)
– Dealloyed PtCo@Graphene catalysts
– Pt nanoparticles inside or on SWCNTs (Single-Walled Carbon Nanotubes)
– Bimetallic and Ru-based core–shell catalysts for ORR/OER
– Pt-free catalysts and alternative materials for cost reduction

2. 2D Materials and Topological Nanostructures

– MoS₂ and other 2D transition metal dichalcogenides (TMDs)
– 2D-topological materials for HER/OER and electronic applications
– Graphite-based materials for lithium-ion batteries (LIBs)
– 2D bimetallic MOFs for ORR/OER
– Topological catalyst designs for multifunctionality

3. Electrocatalysis and Water Splitting

– Water splitting catalysis for green hydrogen production
– Core–shell and bimetallic catalysts for HER and OER
– Photocatalysts for degradation and solar-to-chemical conversion

4. Catalytic Conversion of Biomass-Derived Molecules

– Catalytic conversion of fructose to 5-HMF and FDCA
– Use of MOFs (Metal–Organic Frameworks) and Pt@MOF for selective oxidation reactions

5. Materials Informatics and Data-Driven Design

– Application of machine learning (ML) and data science in catalyst design
– Integration of materials informatics (MI) with ORR and battery material optimization
– MI for structure–property correlation analysis