▎ 摘　　要

NOVELTY - Preparing modified super capacitor carbon comprises (1) taking 1 pts. wt. selenium powder, 8 pts. wt. sodium borohydride, adding 100 pts. wt. deionized water, continuously stirring under nitrogen atmosphere until clear, adding 4-5 pts. wt. glucose, and continuously stirring to clear under nitrogen atmosphere to obtain solution A, and (2) stirring and dissolving polystyrene-b-polyoxyethylene block polymer in tetrahydrofuran solvent at material-to-liquid ratio of 10 g/l, obtaining the polymer solution, adding ethanol aqueous solution, acutely stirring, where stirring speed 800-1000 revolutions per minute, stirring time is 10 minutes, obtaining solution B, where the mixing volume ratio of the ethanol aqueous solution and the polymer solution is 3:1, and quickly adding same volume of the solution A as the solution B, continuously stirring and reacting for 40-60 min under the nitrogen atmosphere, adding graphene oxide aqueous solution with mass concentration of 2 g/l to obtain solution C. USE - The method is useful for preparing modified super capacitor carbon. ADVANTAGE - The method: improves the cycle stability of the activated carbon electrode, and conductivity; and shows excellent capacitance performance. DETAILED DESCRIPTION - Preparing modified super capacitor carbon comprises (1) taking 1 pts. wt. selenium powder, 8 pts. wt. sodium borohydride, adding 100 pts. wt. deionized water, continuously stirring under nitrogen atmosphere until clear, adding 4-5 pts. wt. glucose, and continuously stirring to clear under nitrogen atmosphere to obtain solution A, (2) stirring and dissolving polystyrene-b-polyoxyethylene block polymer in tetrahydrofuran solvent at material-to-liquid ratio of 10 g/l, obtaining the polymer solution, adding ethanol aqueous solution, acutely stirring, where stirring speed 800-1000 revolutions per minute, stirring time is 10 minutes, obtaining solution B, where the mixing volume ratio of the ethanol aqueous solution and the polymer solution is 3:1, and quickly adding the same volume of the solution A as the solution B, continuously stirring and reacting for 40-60 min under the nitrogen atmosphere, adding graphene oxide aqueous solution with mass concentration of 2 g/l to obtain solution C, where the mixing volume ratio of the graphene oxide aqueous solution and the solution B is 1:25, uniformly stirring and allowing to stand for 10 minutes, adding ammonium peroxodisulfate solution with mass concentration of 0.3 g/ml, obtaining solution D, where the mixing volume ratio of the ammonium peroxodisulfate solution and the solution C is 1:100, stirring and reacting solution D in ice water bath for 3-4 hours, centrifuging and separating the precipitate, washing the precipitate with the ethanol aqueous solution, gradually heating the precipitate from room temperature to 200-250 degrees C at heating rate of 2 degrees C/minute, switching to nitrogen atmosphere after stabilizing for 20 minutes, continuously heating up to 450-550 degrees C, and keeping it for 3 hours to obtain selenium-supported porous carbon, (3) adding 30% nitric acid solution with mass concentration to the activated carbon and soaking for 2 hours, filtering, washing with deionized water, drying, and ultrasonically dispersing in ethylene glycol to obtain solution E, taking phosphorus triiodide and dissolving it in acetone to prepare 1 g/l phosphorus triiodide solution, slowly adding the phosphorus triiodide solution to the solution E while stirring, continuously stirring and reacting for 40-60 minutes after the addition is complete, centrifuging at 8000 revolution per minute for 15 minutes to separate the precipitate, washing the precipitate with acetone, and drying to obtain phosphorus-doped activated carbon, and (4) mixing the selenium-supported porous carbon with the phosphorus-doped activated carbon at mass ratio of 1:(1-10), adding aqueous acetone solution at mass-volume ratio of 10 ml/g, ultrasonically dispersing, ultrasonicating for 15 minutes, centrifuging at 8000 revolution per minute for 15 minutes to separate the precipitate, transferring the precipitate to high-temperature furnace after drying, raising the temperature to 400 degrees C in nitrogen atmosphere, keeping the temperature for 1 hour, and cooling. An INDEPENDENT CLAIM is also included for modified super capacitor carbon prepared by the above preparation method.