▎ 摘　　要

NOVELTY - A graphene/silicon carbide composite material comprises graphene/silicon carbide composite material is obtained by the combination of multiple layers of graphene and silicon carbide grains. The silicon carbide grains are uniformly distributed to form a thin film, while the multiple layers of graphene densely fill the space between the surface of the silicon carbide grains and the grain boundaries. This results in the formation of a large quantity of nano-scale graphene/silicon carbide hetero structures. USE - Graphene carbide/silicon carbide composite material for use in an electromagnetic shielding device of a portable and wearable intelligent device. ADVANTAGE - The graphene/silicon carbide composite material provided in this invention exhibits high electrical conductivity. Additionally, it possesses excellent electromagnetic shielding performance and high-temperature oxidation resistance. Specifically, at a thickness of 0.45 mm, it achieves an electromagnetic shielding effectiveness of 74.2 dB. Its thermal resistance index (THRI) is 330.13℃, ensuring the stability of the composite material in harsh environments. These characteristics make the graphene/silicon carbide composite material highly promising for applications in electromagnetic shielding devices and other related fields. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a preparation method of the graphene/silicon carbide composite material.