▎ 摘　　要

NOVELTY - A graphene/chitosan composite material is obtained by adding chitosan quaternary ammonium salt-modified graphene to distilled water, ultrasonically dispersing, obtaining modified graphene dispersion, adding chitosan to aqueous acetic acid solution, stirring, adjusting pH value, filtering, obtaining chitosan solution, mixing modified graphene solution and chitosan solution, ultrasonically dispersing and carrying out electrodeposition using resultant solution as an electrolyte, on an anode made of metal copper or silver, with a cathode made of platinum, using direct current power supply. USE - Graphene/chitosan composite material (claimed). ADVANTAGE - The graphene/chitosan composite material has excellent surface smoothness, and can be peeled from the electrode surface by simple process. DETAILED DESCRIPTION - A graphene/chitosan composite material is obtained by adding oxidized graphite to an aqueous solution of sodium hydroxide, ultrasonically dispersing, obtaining graphene oxide dispersion having concentration of 2.5-5 mg/ml, adding chitosan quaternary ammonium salt to distilled water, stirring, obtaining an aqueous chitosan quaternary ammonium salt solution having concentration of 3-5 mg/ml, adding resultant mixture to graphene oxide dispersion, stirring at room temperature, adjusting pH of the mixture to 9-11, dripping hydrazine hydrate, stirring at room temperature for 10-30 minutes, heating, reacting resultant mixture at 60-90 degrees C for 2-8 hours, precipitating, filtering, washing, drying, obtaining modified graphene, adding resultant to distilled water, ultrasonically dispersing, obtaining modified graphene dispersion, adding chitosan to aqueous acetic acid solution, stirring at 15-30 degrees C for 12-32 hours, adjusting pH value of resultant to 5.4-5.8, filtering, obtaining chitosan solution, mixing 80-100 volume parts modified graphene solution and 60-100 volume parts chitosan solution, stirring at 10-30 degrees C, obtaining an electrodeposition solution, ultrasonically dispersing, removing bubbles, and carrying out electrodeposition using resultant solution as an electrolyte, on an anode made of metal copper or silver, with a cathode made of platinum, using direct current power supply. The mass ratio of graphene oxide dispersion and aqueous chitosan quaternary ammonium salt solution is 10-20:50-100. An INDEPENDENT CLAIM is included for preparation of graphene/chitosan composite material.