Abstract A catalyst with high catalytic activity is necessary for improving the cathode oxygen reduction reaction (ORR) of Al-air batteries.Graphene based perovskite type catalyst are designed and prepared, and their electrochemical performance was tested and assembled into Al-air batteries. The catalytic mechanism was studied using first principles.A research-driven PBL (problem-based learning) teaching mode is carried out through the design of research project and collaborative research practices.The results showed that the Mn-doped perovskite prepared by the sol-gel method after graphene-loaded can effectively improve its conductivity and electrocatalytic activity, and maintained the high and stable discharge of the battery. This experiment encompassed the design and regulation of catalytic performance through various aspects such as material preparation, battery assembly, and electronic structure analysis, thus enabling students to acquire fundamental experimental skills in material preparation and comprehensive application abilities in battery testing. Moreover, it introduced innovative research findings in material design, facilitating the transition from theory to practice and vice versa. The application of PBL teaching had stimulated students’ creative consciousness and research enthusiasm, improved teamwork and comprehensive abilities
SUN Li-Li, LI Yong-Cun, WANG Yong, CHEN Gui-Juan, YE Wei-Dong. Comprehensive Experimental Teaching Design for Preparation of Graphene Based Catalysts and Application in Al-Air Batteries[J]. Chinese Journal of Chemical Education, 2024, 45(10): 56-64.
