Large-scale mechanical preparation of graphene containing nickel, nitrogen and oxygen dopants as supercapacitor electrode material

In this paper, graphite, melamine and transition metal salts with crystal water were used as raw materials to prepare atomic nickel, nitrogen and oxygen tri-doped graphene (NiNOG) as high-performance graphene-based supercapacitor electrode materials by a simple mechanical method (one-step ball milling). This method has the advantages of low cost and high efficiency with large-scale production. NiNOG has a large specific surface area and abundant...