▎ 摘　　要

NOVELTY - Preparing high performance nitrogen doped three-dimensional graphene comprises e.g. (i) using graphite oxidation graphene, (ii) using oxidation graphene in the third dimension graphene hydrogel according to mass volume ratio of 1-2 mg: 1 ml, adding graphene oxide in deionized water, carrying out ultrasonic treatment, obtaining graphene oxide aqueous solution, transferring graphene oxide aqueous solution to polytetrafluoroethylene container, placing in the reaction kettle and carrying out hydro-thermal reaction, cooling to obtain the third dimension graphene hydrogel. USE - The method is useful for preparing high performance nitrogen doped three-dimensional graphene (claimed). ADVANTAGE - The graphene has good electrochemical performance and is very suitable for preparing super capacitor. The method can maintain structure of third dimension graphite, is convenient to operate, and it is suitable for industrialized popularization. DETAILED DESCRIPTION - Preparing high performance nitrogen doped three-dimensional graphene comprises (i) using graphite oxidation graphene, (ii) using oxidation graphene in the third dimension graphene hydrogel according to mass volume ratio of 1-2 mg: 1 ml, adding graphene oxide in deionized water, carrying out ultrasonic treatment, obtaining graphene oxide aqueous solution, transferring graphene oxide aqueous solution to polytetrafluoroethylene container, placing in the reaction kettle and carrying out hydro-thermal reaction, cooling to obtain the third dimension graphene hydrogel, (iii) using the third dimension graphene hydrogel in the third dimension graphene polyaniline composite material, where the third dimension graphene and acid solution mass volume ratio amount is 1 mg: 20-50 ml, using the three dimension graphene hydrogel in leaching in acid solution, according to the third dimension graphene aniline and aniline mass ratio amount is 1:5-10, adding acid solution and stirring, make aniline full to enter into micro-porous structure of three graphite alkene in dimension, benzene ammine and to ammonium sulfate according to mass ratio is 5:3-5, adding ammonium sulfate, stirring well, then using mixed liquid transfer to polytetrafluoroethylene container, placing in the reaction kettle continuous hydro-thermal reaction, product to pump for filter cleaning, drying to obtain the third dimension through drying the graphene oxide-polyaniline composite material, and (iv) using the third dimension graphene polyaniline composite material in nitrogen doping the third dimension graphene: under at inert gas protection, using the three dimension graphene polyaniline compound heating to 750-1000 degrees C, maintaining the temperature for 1-2 hours, cooling to obtain the product.