▎ 摘　　要

NOVELTY - Preparing graphene-activated carbon composite material comprises immersing activated carbon in graphene-hydrogen peroxide mixed solution to obtain activated carbon, and immersing activated carbon in impregnating agent containing ammonia and copper(II) hydroxide and drying to obtain final product. USE - The graphene-activated carbon composite material is useful in gas mask. ADVANTAGE - The method: has simple process; and is environmentally friendly; and the graphene composite activated carbon composite material has protection time of 1.5-2 times of the protection time of the common activated carbon on the market. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for graphene-activated carbon composite material prepared by above method.