▎ 摘　　要

NOVELTY - The utility model claims a graphene modified vanadium pentoxide battery, comprising vanadium pentoxide graphene composite anode, diaphragm; an electrolyte layer and a cathode; the electrolyte layer is located inside the vanadium pentoxide graphene composite anode; the vanadium pentoxide graphene composite anode and the electrolyte layer are isolated by a diaphragm; the cathode is located in the electrolyte layer; one side of the diaphragm close to the vanadium pentoxide graphene composite anode is coated with a cross-linked polyvinyl pyrrolidone coating . The cross-linked polyvinyl pyrrolidone coating of the utility model depends on hydrophobic group and graphene surface interaction, preventing graphene agglomeration, the graphene is better in the vanadium pentoxide graphene composite anode, electronic preference is selected in the graphene to conduct, which can well reduce the impedance of the battery; so as to improve the performance of the lithium battery.