▎ 摘　　要

NOVELTY - A graphene/vanadium pentoxide composite material preparing method involves dissolving vanadium source in the first solvent for the first stirring and mixed with the second solvent for the second stirring to obtain the first product. The first product is mixed with the porous graphene oxide and the third product is stirred for the third time to obtain second product. The second product is mixed with graphene oxide and heated to obtain a third product, subjecting the third product to impurity removal, drying and annealing to obtain the finished product. USE - Method for preparing graphene/vanadium pentoxide composite material for use in supercapacitor (claimed). ADVANTAGE - The method enables preparing graphene/vanadium pentoxide composite material with increased specific surface area, better electrochemical performance and excellent capacitance characteristics, in simple manner.