▎ 摘　　要

NOVELTY - The method involves forming a functional group-bonded region in a graphene sheet by making an activation gas containing fluorine react with the graphene sheet, where the activation gas is xenon fluoride, tetrafluoromethane, and/or sulfur hexafluoride. The graphene sheet having the functional group-bonded region is heated to remove the functional group-bonded region to form nanoholes. The size, shape, or density of nanoholes formed at the pressure or reaction time at which the formation is performed is controlled. USE - Method for forming graphene nanoholes to form nonoholes in a graphene sheet (claimed) used in separators and negative electrode materials for electric vehicle batteries, or for electrolyte membranes of fuel cells, filters, and next-generation semiconductors. ADVANTAGE - The method enables forming the graphene nanoholes in the graphene sheet in a dry manner, and controlling the size and shape of the nanoholes. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a graphene sheet. DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram illustrating a method for forming graphene nanoholes.