▎ 摘　　要

NOVELTY - Preparing three-dimensional ordered porous nitrogen-doped graphene comprises (a) performing ultrasonic dispersion of graphene oxide (GO) in water to obtain GO dispersion liquid, (b) dissolving dopamine (DA) in tris-hydroxymethylaminomethane-hydrochloric acid (Tris-HCl) solution to obtain a dopamine solution, where the concentration of the dopamine (DA) is 0.1-10 mmol/l, (c) mixing the dopamine solution and the GO dispersion liquid, dispersing them ultrasonically and stirring at 25-100 degrees C for 0.5-24 hours to obtain PDA-GO complex and (d) roasting the PDA-rGO composite under an inert atmosphere at 450-900 degrees C for 0.5-8 hours. USE - The graphene is useful as a catalyst or carrier in fuel cells and electrolytic cells (claimed). ADVANTAGE - The method is green and environmentally friendly, simple and easy to implement; has no special requirements for equipment; and is economical and easy to popularize and use. The graphene has broad application prospects in the fields of fuel cells and electrolytic cells. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for three-dimensional ordered porous nitrogen-doped graphene comprising specific surface area of the three-dimensional ordered porous nitrogen-doped graphene with 200-1000 g/m2, nitrogen-doping amount of 3-10 wt.%, pore diameter of 50 nm-20 mu m and pore volume of 0.1-5 cm3/g.