We focus on researching various functional materials for energy storage and their applications to Post Li-ion Batteries.
Our research targets the development of next-generation energy storage systems with high energy density, improved safety, and longer cycle life. We explore innovative electrode materials, electrolytes, and interfaces to enable high-performance batteries suitable for electric vehicles, grid storage, and wearable electronics. These efforts include a comprehensive study of advanced solid electrolytes, novel cathode chemistries, and metallic anodes etc. that offer high scalability and low environmental impact.
By optimizing material properties and interfaces, we aim to achieve breakthroughs in the electrochemical performance of energy storage devices that can overcome the limitations of current lithium-ion technology and meet the demands of future applications.
Multivalent-ion batteries
"Low Cost” Multivalent-ion batteries
Because of the limited Li mineral deposits, the cost of Li battery pack is estimated to continually increase. In this respect, there is an urgent need to explore alternatives, especially a low-cost metal source. Among candidates, multivalent-ion (Mg, Zn etc) batteries have recently attracted great attention as an ideal substrate; the cost of Mg source is approximately 6 times lower compared with that of Li, thanks to the abundance of Mg compounds in the Earth's crust
We focus on the studies of new electrode materials, electrolytes, and anode metals for the efficient and reversible multivalent-ion batteries. We hope that our research activity can contribute to the development of low cost and practical next-generation batteries.
All-solid-state battery
"Highly Safe” Solid electrolyte & All-solid-state batteries
The fast-growing markets for electrical devices have naturally forced current portable batteries to progress to the next-generation battery systems. Among many requirements for next-generation battery systems, the first task would be to ensure a high level of safety, considering that an explosion in a huge battery system could cause a large accident. In this respect, much attention has been focused on all solid state batteries (ASSBs) with the hope of developing highly safe batteries.
Our effort has been devoted to search for new solid electrolyte (SE) materials and their synthesis routes through a liquid-based processing. We believe that the solution-based synthesis method may solve many of the challenges faced in the field of ASSBs
Metal-air battery
"High Energy” Metal-air batteries
A great deal of interest has recently focused on Li–O2 batteries as potential high energy density storage systems. It can deliver the highest energy density among any other types of batteries because Li and O directly react in the absence of any heavy transition metals or crystal framework. However, key limitations, such as poor cyclability and low coulombic efficiency, must be resolved for the Li–O2 battery to be considered for extensive applications.
Our research has focused on designing a broad range of air-electrode that can deliver the high capacity with high power. Also, we are actively developing various efficient solid / soluble catalyst incorporated with the hierarchically porous framework.
Functional Energy Materials
"Functional Materials” for Next-Generation Li-ion Batteries
Our research focuses on the development of cutting-edge battery materials to revolutionize the performance of next-generation Li-ion batteries. By exploring innovative approaches, we aim to enhance the cyclability and efficiency across various battery systems, including Li metal batteries (LMB), anode-free Li metal batteries (AFMLBs), Mg-ion/metal batteries, all-solid-state batteries, and metal-air batteries.
In addition to these efforts, we are actively working on high-capacity alloying and conversion anode materials including various metal anodes, which offer the potential to significantly boost energy storage capacity. Furthermore, our research delves into cathode interface engineering, aiming to optimize electrochemical stability and overall battery performance. Through these multidisciplinary studies, we strive to advance the frontier of battery technology, contributing to the development of more durable, high-capacity energy storage systems for a wide range of applications.