▎ 摘　　要

NOVELTY - Preparing two-dimensional graphene fibers comprises coating graphene oxide slurry on groove base material to obtain a graphene oxide coating under X coating direction, and semi-drying the graphene oxide coating. The base material is stretched along another plane direction Y direction, straighten the wavy portion of the base material, and then split the semi-dried graphene oxide coating into multiple fibrous coatings arranged in parallel. The base material is peeled off from the substrate after further drying treatment to obtain graphene oxide fibers. The graphene oxide fibers are carbonized and graphitized to obtain graphene foam fibers. The graphene foam fibers are to obtain two-dimensional graphene fibers. USE - Method for preparing two-dimensional graphene fibers used for preparing electrical conduction, heat conduction, and heat dissipation products (all claimed). ADVANTAGE - The method prepares the two-dimensional graphene fibers in a simple manner with a regular layered stack structure with small porosity and a density of 1.0-2.2 g/cm3. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the preparation method of two-dimensional graphene fiber. (Drawing includes non-English language text).