▎ 摘　　要

NOVELTY - A graphene/chitosan porous carbon composite material is composed of graphene oxide and chitosan by using two-step calcination method, adsorbing cobalt, nickel and boron and calcining at a high temperature to uniformly disperse nickel and cobalt oxide in the pores of the porous carbon doped with boron and nitrogen. USE - Graphene/chitosan porous carbon composite material for supercapacitor electrode material. ADVANTAGE - The graphene/chitosan porous carbon composite material for supercapacitor electrode material has exhibiting electric double layer capacitance property and faraday capacitive energy and better performance for electrode material of super capacitor. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing graphene/chitosan porous carbon composite material, which involves, taking chitosan and graphene oxide dispersion to a certain mass ratio, dissolving chitosan in acetic acid, adding graphene oxide dispersion liquid, after mixing and stirring, ultrasonic vibrating, freeze-drying, calcining under high temperature under certain conditions and pulverizing and grinding to obtain a nitrogen-doped graphene oxide/chitosan powder, adding the nitrogen-doped graphene oxide/chitosan powder to the mixed solvent of water of nickel nitrate and cobalt nitrate and ethanol in a certain mass ratio, after stirring for a period of time, adding a sodium borohydride aqueous solution dropwise, reacting under certain conditions, washing and drying to obtain the precursor for the preparation of porous carbon and calcining the precursor under certain conditions to obtain the finished product.