▎ 摘　　要

NOVELTY - The material has a nickel and/or cobalt formed as a square-shaped structure and uniformly stacked on a graphene sheet layer. USE - Graphene absorbing composite material i.e. wave absorbing material, for use in electronic technologies e.g. wireless communication and mobile devices. ADVANTAGE - The material has excellent ultra-wideband microwave absorption of nickel and/or cobalt particles supported in square-shaped structure stacking. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing a graphene absorbing composite material. DESCRIPTION OF DRAWING(S) - The drawing shows a scanning electron micrograph/microscopic photograph view of a graphene absorbing composite material.