▎ 摘　　要

NOVELTY - A graphene supercapacitor electrode comprises an electrode sheet, a current collector, a graphene coating layer and a hollow carbon sphere, where the current collector is provided in the middle of the electrode sheet, the graphene coating layer is provided on both sides of the current collector, the hollow carbon spheres are arranged between each graphene particle of the graphene coating layer, and the graphene coating layer and the hollow carbon sphere are bonded to both sides of the current collector through an adhesive. USE - Graphene supercapacitor electrode. ADVANTAGE - The graphene supercapacitor electrode has prolonged electrode service life, conductivity, compacted density, gram capacity, and can be prepared in simple and convenient manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing graphene supercapacitor electrode, which involves mixing graphene coating layer and hollow carbon spheres in a mixer for utilizing dry mixing method to obtain a mixture A, adding N-methylpyrrolidone, polyvinylidene fluoride, polyacrylate terpolymer latex in the binder to the mixture A, and stirring for 1.5 hours, adding the remaining material of the binder to the mixture A and stirring to obtain a mixed material B, evacuating the mixed material B, coating the material B on the surface of the current collector by utilizing a lithium battery coating process, and drying to obtain the finished product.