▎ 摘　　要

NOVELTY - Preparation of nitrogen and phosphorus co-doped porous graphene foam involves reacting vinyl benzyl chloride, triphenylphosphine and acetone, filtering, washing, drying to obtain a monomer, dissolving the monomer, a crosslinking agent and azobisisobutyric acid in a solvent, reacting, introducing reaction solution into a dialysis bag, placing in deionized water, adding deionized water, dispersing, dripping graphene oxide dispersion, adding aqueous ammonia, heat-preserving in hydrothermal autoclave, heating in a tube furnace, heat-preserving and naturally cooling. USE - Preparation of nitrogen and phosphorus co-doped porous graphene foam used as oxygen reduction catalyst and in electrode of supercapacitor (all claimed). ADVANTAGE - The method enables simple, economical and easy preparation of nitrogen and phosphorus co-doped porous graphene foam having excellent catalytic property and electrical storage property. DETAILED DESCRIPTION - Preparation of nitrogen and phosphorus co-doped porous graphene foam involves dispersing graphene oxide in a solvent to obtain 2-10 mg/ml graphene oxide dispersion, adding 6-10 g vinyl benzyl chloride, 10-20 g triphenylphosphine and 30-100 mL acetone to a round bottom flask, reacting at 40-100 degrees C for 20-48 hours, filtering the resultant product, washing, drying to obtain a monomer, dissolving 2-5 g monomer, 0.5-5 g crosslinking agent and 20-100 mg azobisisobutyric acid in 50-150 mL solvent, providing nitrogen at room temperature for 10-60 minutes, reacting at 25-100 degrees C for 1-12 hours, introducing reaction solution into a dialysis bag, placing in large amount of deionized water, obtaining 10-40 mg/ml aqueous solution of microgel, adding deionized water to 1-16 mL microgel, ultrasonically dispersing for 10-30 minutes, obtaining micro-gel dispersion, dripping 10-20 mL graphene oxide dispersion in the resultant product with magnetic stirring, adding 1-3 mL aqueous ammonia, maintaining total solution volume to 80-120 mL, transferring the resultant product to a hydrothermal autoclave, heat-preserving at 100-200 degrees C for 6-24 hours, washing, drying, placing obtained dried black powder block in a tube furnace, heating to 500-800 degrees C at a rate of 2-10 degrees C/minute in nitrogen atmosphere, heat-preserving for 1-5 hours, naturally cooling and taking out the product.