Fluoride and chloride elements in graphene powder come from a wide range of sources. Some of the raw materials used in the production of graphene powder contain a certain amount of the above-mentioned elements, and the chemical reagents used in the production and preparation process may also introduce the above-mentioned elements. The content of fluoride and chloride elements in graphene powder has a certain impact on its applications in lubricating oil, electronic and electrical products, functional coatings, and other fields.