Abstract
The rational design and fabrication of nanostructured materials with desired electrochemical performance is highly demanded for energy storage applications. Functionalization of graphene based materials using chemical moieties not only alter the electronic structure of the underlying graphene but also enable in only limited enhancement of targeted properties. Surface modification of graphene based materials using other nanostructures enhances the effective properties by minimally modifying the properties of pristine graphene backbone. In this pursuit we have fabricated bio-inspired hierarchical nanostructures based on Ni-Co layered double hydroxide on the reduced graphene oxide core shells using template based wet chemical approach. The as-obtained materials with tuned morphology have been characterized structurally and electrochemically. The results show that the charge storage capability of the synthesized material is 3 fold higher than that of pristine materials. These characterizations confirm that the obtained material has large effective surface and has promising applications in catalysis and energy storage. This surface modification strategy is not limited to only transition metal based hydroxides but also may pave a way for the fabrication of many other nanostructured materials.
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