▎ 摘　　要

NOVELTY - Preparing super-hydrophobic, self-healing flexible supercapacitor, comprises e.g. (i) (a) adding polyvinyl alcohol powder into mixed solution of deionized water and nitric acid, (b) heating and stirring the mixed solution, (c) adding multi-walled carbon nanotube aqueous solution into mixed solution until the mixed solution becomes viscous, (d) pouring the mixed solution into the mold, vacuumizing and cooling to obtain sample, and (ii) (e) adding multi-wall carbon nano-tube and graphene into tetrahydrofuran solution, (f) adding modified agent and poly(3,4-ethylenedioxythiophene) polystyrene sulfonate conductive particles into the solution, (g) magnetically stirring the solution for 6 hours to obtain oil paint-shaped hydrophobic suspension, and (iii) (h) spraying the hydrophobic suspension obtained in step (ii) on both surfaces of the polyvinyl alcohol/nitric acid/carbon nanotube hydrogel obtained in step (i) using spray gun, and (i) drying the sample and cutting. USE - The super-hydrophobic, self-healing flexible supercapacitor is useful in outdoor wear-resistant electronic devices. ADVANTAGE - The supercapacitor has excellent self-cleaning ability, excellent wear resistance and reliable self-repairing ability; avoids the problem of multi-layer displacement of existing supercapacitors, and has low cost, simple preparation method, super-hydrophobicity and flexibility. DETAILED DESCRIPTION - Preparing super-hydrophobic, self-healing flexible supercapacitor, comprises (i) (a) adding 6.5 g polyvinyl alcohol powder into mixed solution of 50 ml deionized water and 2.7 ml nitric acid, (b) heating and stirring the mixed solution at 90 degrees C for 20 minutes, (c) adding 3 ml multi-walled carbon nanotube aqueous solution into the mixed solution until the mixed solution becomes viscous, (d) pouring the mixed solution into the mold, vacuumizing for 30 minutes and gradually cooling for 24 hours at room temperature to obtain sample with size of 20x 20x 2 mm, and (ii) (e) adding 0.5-0.9 g multi-wall carbon nano-tube and 0.5-0.1 g graphene into 40 ml tetrahydrofuran solution, (f) adding 0.45-0.5 g modified agent and 0.02 g poly(3,4-ethylenedioxythiophene) polystyrene sulfonate conductive particles into the solution, (g) magnetically stirring the solution for 6 hours to obtain oil paint-shaped hydrophobic suspension, and (iii) (h) spraying the hydrophobic suspension obtained in step (ii) on both surfaces of the polyvinyl alcohol/nitric acid/carbon nanotube hydrogel obtained in step (i) using spray gun at a pressure of 0.5 MPa, and (i) drying the sample at room temperature for 8 hours, and cutting the size to 10x 10x 2 mm.