▎ 摘　　要

NOVELTY - A nitrogen-doped nickel-vanadium-oxygen electrode material is prepared by mixing soluble strong acid salt of nickel with soluble salt containing vanadium, nitrogen-doped graphene, polyatomic alcohol type non-ionic surfactant and primary amine organic alkali and preparing by one-step hydrothermal method. USE - The method is used for preparing nitrogen-doped nickel-vanadium-oxygen electrode material in supercapacitor field. ADVANTAGE - The product has new properties through simple heat treatment step, specific capacitance reaching 1122.2 F/g at current density of 1 A/g and 624.8 F/g at 20 A/g, increased specific surface area from 12.2636 m2/g to 256.8145 m2/g, more symmetrical charge-discharge curve area and improved reversibility and coulomb efficiency.