▎ 摘　　要

NOVELTY - Preparing electrode material comprises (i) dissolving molybdenum source in deionized water, magnetic stirring uniformly to obtain a solution, adjusting the pH value of the solution, ultrasonically dispersing the nano-rod in deionization water, adding nickel source to the mixture, stirring uniformly, transferring the obtained uniform solution to the high pressure kettle, sealing and heating reaction, cooling to room temperature, washing, and drying at high temperature to obtain the double-metal oxide of the core-shell structure, and (ii) mixing the oxidation graphene with the double metal oxide with the core shell structure, mixing uniformly, ultrasonic reacting, transferring to a high pressure tank, sealing the reaction, heating, cooling, washing and drying high-temperature annealed product. USE - The method is useful for preparing electrode material. ADVANTAGE - The method is simple, effective and economical, and provides electrode material with excellent electrochemical performance, high specific capacity, long cycle stability, large specific capacitor, high energy density and power density, and controllable crystalline form and shape, and excellent storage and circulation performance of the capacitor. DESCRIPTION OF DRAWING(S) - The drawing shows a high-magnification scanning electron microscope photograph (TEM) of the oxidized material graphene in Example 1.