ABSTRACT
Pure graphene exhibited a layered structure with a very smooth surface, while wrinkles were observed in the hybrid sample both at the edge of the graphene sheets and on the interlayer nanosheets. The tubular materials were distributed randomly on the surface of graphene nanosheets with the tubular axes being parallel to the graphene nanosheets. The electrodeposition process has been shown to be an effective technique to synthesize manganese oxide-based hybrids with graphene nanosheets. Nickel oxide–graphene hybrids are mainly based on NiO, with major applications in energy storage devices, i.e., supercapacitors and lithium ion batteries, and have been synthesized by using various methods. The graphene layer had a monolayer structure, with uniform contrast for visible hexagonal atomic lattice. Hybrids of graphene or graphene oxides with various complex oxides and multiple oxides have been reported.
