Templated
3D Ultrathin CVD Graphite Networks with Controllable Geometry: Synthesis and Application
As Supercapacitor Electrodes
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Abstract
Three-dimensional ultrathin graphitic
foams are grown via chemical
vapor deposition on templated Ni scaffolds, which are electrodeposited
on a close-packed array of polystyrene microspheres. After removal
of the Ni, free-standing foams composed of conjoined hollow ultrathin
graphite spheres are obtained. Control over the pore size and foam
thickness is demonstrated. The graphitic foam is tested as a supercapacitor
electrode, exhibiting electrochemical double-layer capacitance values
that compare well to those obtained with the state-of-the-art 3D graphene
materials