Our laboratory is dedicated to advancing innovative Ionic technologies with a specific focus on two key areas: (A) Energy Materials and (B) Electronics. Our approach begins by establishing a comprehensive understanding of the intricate relationship between material properties and structures. This is achieved through a combination of electrochemical performance analysis and atomic-level characterization, harnessing the formidable analytical capabilities of a Transmission Electron Microscope (TEM). This foundational knowledge enables us to enhance material design significantly. From these in-depth insights, we can formulate pioneering design principles for Ionic materials and, subsequently, create innovative systems for Energy and Electronics applications.

(Project A) Given the increasingly critical nature of energy-related challenges, every step of the energy consumption cycle gains heightened significance, encompassing generation, storage, and utilization. Hydrogen gas presents itself as an ideal candidate for a zero-carbon emissions energy cycle. To realize this potential, we are actively working towards energy generation through hydrogen gas and oxygen reactions via (A1) Fuel Cells. Furthermore, there is a substantial demand for energy storage solutions that offer higher energy density and enhanced safety. In response, we are engaged in the development of (A2) rechargeable batteries, which are poised to meet market demands.

(Project B) The field of Electronics is currently undergoing a revolutionary phase, primarily attributed to two key factors: (i) the remarkable success of Artificial Intelligence and (ii) the sustained adherence to Moore's Law over the past half-century. These trends have created a pressing need for new electronic technologies that empower Artificial Intelligence (AI). We believe that harnessing the unique properties of oxide materials holds great promise in meeting these evolving requirements, thereby accelerating the pace of innovation within the electronics industry. Our research leverages various oxide materials and design concepts, all grounded in the fundamental understanding derived from our robust analytical capabilities.

In our pursuit of these objectives, we maintain close collaborative ties with the Center for Energy Materials Research (https://ssems.kist.re.kr:54203/index.php), actively engaging in a wide array of research endeavors.

Applying (In-situ) Transmission Electron Microscope (TEM), we visualize arrangement of atoms in Ionic materials and estimate their effects on the electronic/electrochemical performances, which establishes practical design rules to construct an innovative system. 

Particularly, we found various in-situ TEM techniques such as biasing, heating, and gas flowing as a platform to explore atomic worlds and their dynamics while operating the systems. Understanding dynamics in atomic scale will be a fascinating thing that enlighten human insight deeper and opens a new road to go.