||The purpose of our lab is to identify the physical/chemical phenomena which occurs at surface/interface. The focus of our research is on identifying the correlation of electronic structure and chemical reaction on surface by utilizing photoelectron spectroscopy in basis of synchrotron radiation. Currently, our main research area is to investigate surface/interface characteristics of next-generation energy-related materials, e.g. battery materials, catalyst, and fuel cells device. Also, we study real time in-situ analysis on surface reaction mechanism using Ambient Pressure XPS.