▎ 摘　　要

NOVELTY - Preparing super capacitor electrode comprises reducing graphene oxide/manganese dioxide composite material. G-C3N4 porous nano-tube and Pluronic F-127 powder are uniformly dispersed in de-ionized water to obtain mixed solution. The mixed solution is refrigerated for 20-30 hours at 0-5 degree Celsius to obtain glue dispensing machine special ink. The glue dispensing machine special ink is prepared into a dispensing machine printing needle tube. An electrode is annealed under oxygen-free condition to obtain a super capacitor electrode with high specific surface area. USE - Method for preparing super capacitor electrode. ADVANTAGE - The method uses 3-D printing technology with controllable micro-nano structure, and the used reducing graphene oxide has high specific surface area and good stability. The designing and printing of the electrode structure of the capacitor through the 3-D printing technology can further enhance the specific surface area of the electrode, so as to obtain the high performance super capacitor device, making it become the actually available super capacitor device in the actual production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for constructing a supercapacitor electrode, which comprises (A) dispersing reduced graphene oxide/manganese dioxide composite material, G-C3N4 porous nanotubes and Pluronic F-127 powder uniformly, refrigerating at 0-5 degrees C for 20-30 hours to make the mixed liquid gel and obtaining special ink for the dispenser, where mass ratio of the reduced graphene oxide/manganese dioxide composite material, G-C3N4 porous nanotubes, Pluronic F-127 powder and deionized water is 4:1:(4-5):(6-10), and the mass ratio of reduced graphene oxide to manganese dioxide in the reduced graphene oxide/manganese dioxide composite material is 1: (1.5-2); (B) putting the special ink for the dispenser into the printing needle tube of the dispenser, adjusting the pressure to 160-220kPa, and the printing speed to 4-6mm/s, presetting the electrode structure and setting it in the software MuCADV, setting the printing filament spacing to 0.3-0.5mm, and then printing; and (C) annealing the electrode printed under oxygen-free conditions to remove Pluronic F-127 to obtain a supercapacitor electrode with high specific surface area.