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Transition metal oxide nanostructures are one of current investigation focuses for supercapacitors. We herein report a novel and facile approach to fabricate Co3O4 nanosheet arrays on 3D porous graphene/nickel foam. A graphene layer with the sharp edges and wrinkles is obtained on nickel foam by an electrophoretic deposition (EPD). The 2D thin Co3O4 nanosheets are further grown on the 3D porous graphene/nickel...
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