▎ 摘　　要

NOVELTY - Preparing nitrogen-doped manganese dioxide/graphene carbon nanotube electrode material comprises (i) preparing manganese oxide/neural graph collaborative filtering (NGCF) electrode material by electrochemically depositing manganese oxide nanosheets on the surface of nitrogen-doped manganese dioxide/graphene carbon nanotubes at constant voltage, where the electrochemical deposition adopts saturated calomel electrode as reference electrode, platinum sheet electrode as counter electrode, nitrogen-doped manganese dioxide/graphene carbon nanotubes are used as working electrodes, and the electrolyte for electrochemical deposition is a mixed aqueous solution of manganese acetate and sodium acetate; and (ii) placing the MnO2/NGCF electrode material in ammonia water to carry out a hydrothermal reaction, washing and drying. USE - The electrode material is useful in super capacitor electrode (claimed). ADVANTAGE - The electrode material has more excellent electrochemical performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for electrode material prepared by the above method.