This course mainly introduces the principle experiments and practical operations of photoelectric conversion, electrochemical interface reactions, and electrochemical cells. Through experimental operations, students will understand the basic experimental processes, data collection, and analysis of photoelectric conversion, electrochemical conversion, and energy storage. The course aims to develop students' abilities in basic experimental operations, data collection, principle analysis, and summarizing and generalizing experimental phenomena, laying a good foundation for further comprehensive experiments related to new energy.