Our group focuses on enabling novel electrolyte and electrode materials for high-performance all-solid-state batteries. Research efforts include the fundamental studying of the electrode-electrolyte interface and an understanding of the mechanical effect on the cell level by utilizing advanced characterization techniques. The fabrication process of the electrodes and the cells including the dry process and pressurization method is also studied as well as the next-generation sodium ASSB system for the cost-effective alternatives. 

Sodium solid-state batteries are highly advantageous for large-scale applications, primarily due to their use of cheaper and more abundant raw materials, which ensures both sustainability and a low cost per kWh. Our research group is dedicated to designing sodium solid electrolytes that exhibit high ionic conductivity and stable interfacial properties. Additionally, we investigate the underlying degradation mechanisms with the goal of improving electrochemical performance, enabling stable long-term cycling, and ultimately enhancing the overall practicality and efficiency of sodium solid-state batteries.

Currently, for lithium metal anodes, silicon anodes, and lithium-sulfur cathodes, which exhibit high theoretical capacities and performances, there are several issues such as rapid degradation of cells. As a result, most materials with high theoretical capacities remain at the laboratory scale and have not been commercialized.
Our group aims to evaluate and understand various characteristics of cells using different electrolyte systems, based on electrochemical and analytical methods.
Furthermore, we seek to develop electrolyte systems suitable for alternative systems such as sodium-ion batteries and anode-free designs.

Next-generation batteries include lithium metal, anode-free, lithium-sulfur, sodium-ion, and lithium-air batteries. These batteries have the advantages of extremely high energy density and lightweight design. Our group is conducting various studies to optimize the operation of these advanced batteries.