Graphene oxide/metal composite material and preparation method thereof

The invention is applicable to the technical field of graphene oxide, and provides a graphene oxide/metal composite material and a preparation method thereof, and the preparation method comprises the following steps: S1, preparing graphene oxide by a pre-oxidation method; s2, synthesizing tetraamino metalloporphyrin; and S3, doping the graphene oxide with tetraamino metalloporphyrin and nano metal oxide to prepare the composite material. According to the graphene oxide/metal composite material and the preparation method thereof provided by the invention, the composite material prepared by doping the tetraamino zinc porphyrin and the nano-zinc oxide into the graphene oxide according to a specific proportion forms an n-type semiconductor, and a nitrogen-doped porous structure can provide more lithium storage sites, so that the lithium storage performance of the composite material is improved. Therefore, the conductivity of the graphene oxide is greatly improved, the structural damage caused by the volume change