▎ 摘　　要

NOVELTY - Preparation of graphene-oxide-coated octagon, involves cleaning octagon with ethanol, washing and drying octagon, preparing a graphene oxide solution and a strong electrolyte solution, stirring the octagon in the graphene oxide solution, while dripping electrolyte solution, precipitating graphene oxide, covering octagon with graphene oxide, removing the supernatant, and drying residual solid. USE - Preparation of graphene-oxide-coated octagon (claimed).