▎ 摘　　要

NOVELTY - Manufacturing electrode active material for ultracapacitor, involves forming a graphite oxide, introducing the graphite oxide into a polar solvent, and peeling the graphite oxide by ultrasonic treatment to form a graphene oxide dispersion, oxidizing the activated carbon in an acidic solution containing an oxygen component and introducing the oxidized activated carbon into the graphene oxide dispersion to form a mixed dispersion of activated carbon and graphene oxide. USE - Method for manufacturing electrode active material for ultracapacitor (claimed). DETAILED DESCRIPTION - Manufacturing electrode active material for ultracapacitor, involves forming a graphite oxide, introducing the graphite oxide into a polar solvent, and peeling the graphite oxide by ultrasonic treatment to form a graphene oxide dispersion, oxidizing the activated carbon in an acidic solution containing an oxygen component, introducing the oxidized activated carbon into the graphene oxide dispersion to form a mixed dispersion of activated carbon and graphene oxide, introducing an isocyanate compound into the activated carbon-graphene oxide mixed dispersion to form an isocyanate-introduced activated carbon-graphene oxide complex, dispersing the activated carbon-graphene oxide complex into which the isocyanate is introduced in a polar solvent, and introducing an organic compound containing an amino group and a pyrimidine group to form an activated carbon-graphen oxide complex into which a nitrogen functional group is introduced and reducing heat treatment of the activated carbon-graphene oxide complex into which the nitrogen functional group has been introduced to obtain a nitrogen-doped activated carbon-graphene composite.