전극 물성 연구실

Recent development of Electrical vehicles, and portable devices requires high capacity and energy density batteries. Many other researches were conducted to develop electrical performance of the batteries. Such as doping, electrode surface modification and etc. However closer research in atomic and electronic scale research was barely accomplished. Our group closely investigate the structural or electrical phenomenon, utilizing PLS(Pohang Light Source). We expect this research will provide fundamental understanding of battery performance in atomic scale and further development of high capacity and energy density energy. Water electrolysis(also called water splitting) is the decomposition of water into oxygen and hydrogen gas due to the passage of an electric current. This technique can be used to make hydrogen gas, a main component of hydrogen fuel, and breathable oxygen gas. It ideally requires a potential difference of 1.23 V to split water. However, real water electrolyzers require higher voltages for the reaction to proceed. The part that exceeds 1.23 V is called overpotential, and represents any kind of loss and nonideality in the electrochemical process. Electrocatalysts can facilitate this reaction. Carbon dioxide is an abundant potential carbon resource on Earth, and it is also a greenhouse gas whose atmospheric concentration has increased sharply over the past two centuries Chemical fixation of carbon dioxide (CO2) is an attractive technique for utilization of carbon resources, as well as for the reduction of the atmospheric concentration of CO2. Carbon dioxide is a potential carbon resource abundant on earth. The electrochemical reduction of CO2 is the conversion of carbon dioxide to more reduced chemical species. The first examples of electrochemical reductio