▎ 摘　　要

NOVELTY - The graphene metal composite wire has a foam metal sheet (1), and a graphene layer (2) provided on the surface and inner hole of the foamed metal sheet. Two layers of foamed metal sheets are pressed together to form a graphene metal composite wire. The foamed metal sheet is a foamed nickel sheet, a foamed copper sheet, a foamed iron sheet or a foamed aluminum sheet. The graphene is oligo-layer graphene, single-layer graphene, or doped graphene. The doped graphene is nitrogen-doped graphene or boron-doped graphene. USE - Graphene metal composite wire used for laying of high-power and high-current cables and charging facilities. ADVANTAGE - The graphene metal composite wire is more convenient for fixing graphene. The cable customization is convenient for on-site construction and laying, even if the cable corners and joints do not reduce the power transmission capacity of the cable. The joints are easy to make and connect on site. The design is flat, does not affect the appearance of the wall and road, and reduces the use of cable fixing nails. The proportion of the space occupied by the graphene powder in the cable can be greatly increased, which can increase the upper limit of the cable carrying current and improve the cable's ability to transmit power. The graphene metal composite wire can maintain the compressive stress required for the graphene powder and the electrical conductivity of the powder for a long time after the foamed metal is compressed, without additional stress-maintaining mechanisms or devices. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of graphene metal composite wire. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic sectional view of a graphene metal composite wire. Foam metal sheet (1) Graphene layer (2)