/ REDUCED GRAPHENE OXIDE/CARBON NANOTUBE COMPOSITE MATERIAL HAVING A SPONGE STRUCTURE AND METHOD FOR MANUFACTURING THE SAME

摘要

The present invention relates to a reduced graphene oxide / carbon nanotube composite material having a sponge structure and a method of manufacturing the same, (1) preparing an aqueous solution by mixing water and alcohol, (2) graphene oxide and carbon nano Preparing a graphene oxide / carbon nanotube dispersion by mixing and dispersing the tube in the aqueous solution, (3) preparing the graphene oxide / carbon nanotube composite by cooling and freeze-drying the dispersion under reduced pressure, (4) And reducing the complex by heat treatment. According to the present invention as described above, compared to the conventional graphene / carbon nanotube composite material for supercapacitor electrodes, there is no other additives and cleaning process, so that the manufacturing process is not only environmentally friendly, but also simple and has improved electrochemical properties for supercapacitor electrodes. By providing a composite material, there is an effect of providing a reduced graphene oxide / carbon nanotube electrode material for a high performance supercapacitor having excellent energy storage capacity and electrochemical properties.