▎ 摘　　要

NOVELTY - Graphene metal comprises 0.1-1 wt.% graphene materials, and remaining amount of metal materials, where the graphene material is nano graphene with less than 10 layers and nano powder material, the metal material comprises copper, aluminum and titanium, the preparation raw material comprises 0.1-1 wt.% graphene material, 40-50 wt.% aluminum and remaining amount of copper, or the preparation raw material comprises 0.1-1 wt.% graphene material, 70-80 wt.% aluminum and remaining amount of copper. USE - The graphene metal is used for preventing the damage of the low temperature from the vehicle, traffic track or cable (all claimed). ADVANTAGE - The graphene metal is economical, has excellent conductive, thermally conductive properties, excellent mechanical properties and weldability, and prevents metal fatigue due to vibration. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a graphene metal carbon fiber is prepared using carbon fiber and graphene metal, where the carbon fiber is linear or mesh-shaped, the length of the linear carbon fiber is 5-50 mm, the length of the linear carbon fiber is any desired length, and the tensile strength of the carbon fiber is not less than 3000 MPa; (2) a carbon fiber skin has a skin matrix containing the graphene metal carbon fiber, where the surface of the skin matrix is additionally welded with a metal carbon fiber thread or a metal carbon fiber mesh, the surface of the skin matrix is further provided with a metal layer to press the separately welded metal carbon fiber thread or the metal carbon fiber mesh on the surface of the skin matrix, the metal layer is used to sandwich the separately welded metal carbon fiber thread or the metal carbon fiber mesh between the skin matrix and the metal layer, the skin matrix is prepared by pressing 0.1-1 wt.% graphene material and 0.1-1 wt.% linear carbon fibers with a length of 5-50 mm based on aluminum or titanium into the skin matrix, directly arranging the carbon fiber mesh between two portions of metal and pressing into a skin or other products, directly spraying the surface of the carbon fiber mesh with metal by thermal spraying and pressing into a skin or other products, and thermally spraying the outer surface of the metal layer on the side facing away from the skin substrate with a graphene enamel layer; (3) a thermally conductive system comprising power source, power thermoelectric converter and graphene metal carbon fiber, where the electrical thermal energy converter is electrically connected to the power source and graphene metal carbon fiber; (4) a vehicle comprising the production material, comprising graphene metal or contain graphene metal carbon fibers or containing carbon fiber or the vehicle is provided with a thermally conductive system; (5) a traffic track is provided with a thermally conductive system, where the traffic track is a railway rail, and the railway of the railway is provided with a thermally conductive system; and (6) a cable, where the outer surface of the cable is rotated or connected to the thermally conductive system, where the cable is an overhead cable.