▎ 摘　　要

NOVELTY - A graphene tube comprises millimeter-sized ball and powder in a mass ratio of (3-6):1. The powder comprises micron-sized metal powder and graphene in a mass ratio of (490-2000):1. USE - Graphene tube. ADVANTAGE - The graphene tube has excellent synergistic effect, stability and performance, is environmentally-friendly, and can be prepared in simple and economical manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of graphene tube, which involves placing graphene, micron-sized metal powder with particle size of 60-120 mesh and millimeter-sized ball with diameter of 2-5 mm in ball mill and then ball milling, adding solvent including anhydrous ethanol and acetone to the mixture in a ratio of 12:(1-2) and then vacuumizing, placing in ball mill, ball milling at 250-500 rpm for 6-12 hours and drying, where the mass ratio of micron-sized metal powder and graphene is (500-2000):1.