Preparation and Properties of Nitrogen-doped Reduced Graphene Oxide synthesized by Ultrasonic Synergistic Hydrothermal Method

• 1、School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083

Abstract：Performance of aluminum air battery is largely affected by cathode catalytic materials. In order to improve the oxygen reduction reaction catalytic performance of nitrogen-doped reduced graphene oxide, the performance optimized HU-N-RGO was hydrothermal synthesized with ultrasonic synergistic using graphene oxide as carbon source and ammonia water as nitrogen source in this study. The material properties and morphology of the material were studied by XRD, BET, SEM and TEM. The electrochemical properties of the material were studied in a three-electrode system. And it was used as a cathode catalytic material for aluminum air battery to study its discharge performance. The results show that compared with H-N-RGO which was hydrothermal synthesized without ultrasonic assist, the degree of agglomeration of HU-N-RGO is reduced, the specific surface area is increased, and the electrochemical performance and aluminum air battery discharge performance is significantly improved. Ultrasonic synchronous synergistic hydrothermal synthesis can improve the material properties of nitrogen-doped reduced graphene oxide and improve its oxygen reduction reaction catalytic performance.

Keywords： ultrasonic synergistic nitrogen-doped graphene electrocatalyst aluminum air battery