▎ 摘　　要

NOVELTY - The utility model claims a carbon paper current collector modified by graphene. The current collector of the utility model comprises a carbon paper and a graphene layer attached to the surface of the carbon paper. The carbon paper of the utility model is excellent electronic conductor, capable of quickly providing charge transfer of the redox reaction, and used for the current collector of the lithium metal cathode to contain the volume expansion of lithium metal in the charging and discharging process. In addition, the surface modification of the carbon paper by graphene further improves the affinity of the lithium, so as to improve the stability of the negative circulation process. The porous structure of the carbon paper of the utility model is in the circulation process, on the one hand, it can reduce the real current density to inhibit the formation of lithium dendrite; On the other hand, the lithium metal can be contained in the 3 D structure, reducing the containing volume expansion and inhibiting lithium metal and electrolyte side reaction, which can obviously improve the electrochemical deposition/dissolution behaviour of the lithium.