▎ 摘　　要

NOVELTY - A polypyrrole-polycaprolactone-graphene ternary nanocomposite is prepared by taking graphite powder, adding sodium nitrate and concentrated sulfuric acid, ice-water bath stirring, adding potassium permanganate, reacting, removing ice-water bath, heating, adding liquid volume to container, stirring and reacting, adding hydrogen peroxide solution, centrifuging, washing solid to neutral, re-dissolving in water, ultrasonicating, filtering, freeze drying to obtain graphene oxide, mixing dimethylacetamide and deionized water, adding graphene oxide, ultrasonicating, adding sodium bisulfite, stirring and reacting, filtering, washing with deionized water, freeze drying to obtain graphene, mixing with tetrahydrofuran, ultrasonicating, adding polycaprolactone and polypyrrole, stirring and dissolving, and electrospinning. USE - Method for preparing polypyrrole-polycaprolactone-graphene ternary nanocomposite. ADVANTAGE - The product has excellent electrochemical performance and has high specific surface area. DETAILED DESCRIPTION - A polypyrrole-polycaprolactone-graphene ternary nanocomposite is prepared by taking 2-3 g graphite powder, adding 1-1.5 g sodium nitrate and 46-69 mL concentrated sulfuric acid, ice-water bath stirring, adding 6-9 g potassium permanganate, reacting at 20 degrees C for 4-8 minutes, removing ice-water bath, heating at 32-37 degrees C for 25-40 minutes, adding 1.8-2.5 times liquid volume to container, stirring and reacting for 12-18 minutes, adding hydrogen peroxide solution, centrifuging, washing solid to neutral, re-dissolving in water, ultrasonicating for 10-20 minutes, filtering, freeze drying to obtain graphene oxide, mixing 600-750 mL dimethylacetamide and 400-500 mL deionized water, adding 1.0-1.2 g graphene oxide, ultrasonicating for 3-10 minutes, adding 5.6-6.8 g sodium bisulfite, stirring and reacting at 90-98 degrees C for 2.8-3.5 hours, filtering, washing 3-5 times with deionized water, freeze drying to obtain graphene, taking 2-10 g graphene, mixing with 20-30 mL tetrahydrofuran, ultrasonicating, adding 2-3 g polycaprolactone and 1-2 g polypyrrole, stirring and dissolving, and electrospinning.