▎ 摘　　要

NOVELTY - The preparation of high-energy graphene battery anode material involves (i) taking graphite, concentrated sulfuric acid, concentrated phosphoric acid, concentrated nitric acid, intercalation agent, and potassium perchlorate, reacting, cooling, adding concentrated sulfuric acid, heating, adding potassium permanganate, and hydrogen peroxide, stirring in a water bath, reacting, filtering, alternately washing the solid with deionized water and ethanol to obtain graphene oxide, (ii) adding graphene oxide to deionized water, dispersing, peeling, centrifuging, and concentrating. USE - Preparation of high-energy graphene battery anode material (claimed). ADVANTAGE - The method enables the preparation of high-energy graphene battery anode material with small thickness, and shot ion propagation path. DETAILED DESCRIPTION - The preparation method of high-energy graphene battery anode material involves (i) taking 4 pts. wt. graphite, 25 pts. wt. concentrated sulfuric acid, 6 pts. wt. concentrated phosphoric acid, 2 pts. wt. concentrated nitric acid, 1-2 pts. wt. intercalation agent, and 9-10 pts. wt. potassium perchlorate, reacting at 65-75 degrees C for 1-2 hours, cooling to below 30 degrees C, adding 120 pts. wt. concentrated sulfuric acid, heating at below 40 degrees C, continuously adding 25-28 pts. wt. potassium permanganate, and 15-18 pts. wt. 27-35% hydrogen peroxide, stirring in a water bath at 25-30 degrees C, reacting for 10-12 hours, filtering, alternately washing the filtered solid with deionized water and ethanol until it is neutral to obtain graphene oxide, (ii) adding 1 pt. wt. graphene oxide to 500 pts. wt. deionized water, ultrasonically dispersing, peeling for 12-16 hours, centrifuging at 3000-4000 rpm, removing sediment, concentrating the solution to 0.1-0.15 times the original volume to obtain single graphene oxide aqueous solution, (iii) milling silicon oxide to obtain silicon oxide fine powder, purifying, adding into a single graphene oxide aqueous solution, stirring for 0.5-1 hour, removing, drying, calcining in an inert atmosphere at 200-300 degrees C for 6-8 hours, adding calcined product to a hydrazine hydrate solution having a pH of 11-11.8, refluxing at 90-95 degrees C for 4-6 hours, washing the reaction product with deionized water, and drying.