Graphene is a nanomaterial arranged in a two-dimensional layer of carbon atoms with sp2 hybridization that are connected in a hexagonal lattice structure. Graphene is one of the thinnest, hardest and most conductive materials currently known. Graphene has unique physicochemical properties like high surface area, good biocompatibility, strong mechanical strength, excellent thermal conductivity, and fast electron transportation. Due to its unique physical and chemical properties, graphene has a wide range of application prospects in many fields, such as electronics, energy technology, biomedicine, catalysts and other fields.