Electrocatalytic Performance of Ultrathin Porous Co3O4 Nanosheets for Oxygen Reduction Reaction

• 1、 School of Science, Beijing University of Posts and Telecommunications, Beijing 100876

Abstract：Quasi-two-dimensional ultrathin multicomponent transition-metal oxide nanosheets have been considered as a promising candidate of catalyst in eco-friendly energy storage/conversion systems due to their low price, large specific surface area, multiple active sites, and high electron transfer efficiency. In this work, novel mesoporous ultrathin Co3O4 nanosheets have been successfully obtained through the simple combination of hexamethylenetetramine-assisted hydrothermal reaction and calcination in an air atmosphere. The mesoporous Co3O4 nanosheets exhibit a micron-sized planar area and ultrathin thickness, suggesting a high specific surface area, thus facilitating the charge transfer and raise efElectrocatalytic Performance of Ultrathin Porous Co3O4 Nanosheets for Oxygen Reduction Reactionficiency of reactant exchange to enhance the overall performances in electrochemical reaction. In the oxygen reduction reaction (ORR) test, mesoporous Ultrathin Porous exhibit enhanced ORR performance. Moreover, such catalyst also exhibits superior methanol tolerance ability and durability over commercial Pt/C catalyst.

Keywords： Electrochemistry Oxygen Reduction Ultrathin Porous Co3O4 Nanosheets