▎ 摘　　要

NOVELTY - One-pot fabrication process of porous heteroatom(s)-doped reduced graphene oxide (rGO) by reduction of graphene oxide (GO) using natural biomolecule(s) as reductant-dopant involves adding GO to the aqueous solution of biomolecule under stirring for 20 minutes to mix it thoroughly until the initially formed cotton-like light yellowish black precipitate to get fully dispersed, where the mass ratio of graphene oxide to biomolecule 1: (1-5), stirring the resulting mixture on a magnetic stirrer for 10-30 minutes, maintaining pH of the mixture in between 6-10 by adding dil.sodium hydroxide-perchloric acid, heating the above resultant on an oil bath at a temperature of 50-95℃ for a period from 8-16 hours till its color is changed from yellowish-black to dark black, centrifuging obtained black residue, and washing repeatedly with deionized water (DIW) till the unreacted precursor is removed and drying solid suspension under vacuum of 50-80℃ for 10-15 hours. USE - Method for one-pot fabrication process of porous heteroatom(s)-doped reduced graphene oxide (rGO) by reduction of graphene oxide (GO) using natural biomolecule(s) as reductant-dopant used for fabricating high voltage aqueous symmetric supercapacitor with workable mass-loading without using any binder/conducting agent exhibiting fairly high energy density. ADVANTAGE - The method has simple operation, and can accurately regulate the N/S doping amount and improve performances of heteroatom doped graphene. The porous heteroatom(s)-doped reduced graphene oxide has cost-effective, long life, and high conductivity, and has played a crucial role in the energy storage performance of these devices.