▎ 摘　　要

NOVELTY - A water-soluble graphene comprises a graphite oxide, 1.5-75 pts.wt. 1-ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride, 1.5-75 pts.wt. 4-dimethylaminopyridine, 1-50 pts.wt. ethylenediamine, 1-5000 pts.wt. acrylic acid, 1-100 pts.wt. sodium styrene sulfonate, 0.001-0.03 pts.wt. initiator and 1-50 pts.wt. reducing agent. USE - Water-soluble graphene is used for super capacitor electrode material. ADVANTAGE - The water-soluble graphene is efficiently prepared with improved electrochemical performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of water-soluble graphene, which involves providing natural graphite through chemical oxidation method for preparing single-layer or multi-layer graphite oxide, ultrasonically dispersing the raw material in ethylene diamine, reacting for 2-48 hours at 20-100 degrees C, cooling to room temperature, filtering the product by filtering film, washing at 40-100 degrees C, drying for 2-24 hours, adding evocating agent, centrifuging, washing, drying, dispersing in the deionized water, adding reducing agent at 20-100 degrees C to react for 2-24 hours, cooling to room temperature, centrifuging, washing, and vacuum-drying.