▎ 摘　　要

NOVELTY - The utility model claims a lithium metal secondary battery cathode, comprising a graphite foam and composite metal lithium in the graphite foam. This utility model makes the graphite foam and metal lithium, which is filled in the graphene foam is a framework with three-dimensional graphene foam by reducing graphene oxide surface oxygen-containing functional group lithium. liquid metal lithium capable of spontaneously adsorbed in three-dimensional graphene foam, graphene and three-dimensional foam is crisscrossed graphene sheet to form a porous structure, and has larger specific surface area, it can well limit the lithium inside the space and reduces the volume of the lithium cathode expansion, at the same time the graphene sheet also can affect the distribution of the electric field in the cell so the lithium ion in the distribution of the electrode surface, inhibiting the formation of dendrite, which is good for improving the coulomb efficiency of the lithium negative electrode and the lithium metal anode further can have good flexibility.