Open Access

Low Temperature Synthesis and Characterization of rGO-CoO Nanocomposite with Efficient Electrochemical Properties

A. Jafar Ahamed, agjafar@yahoo.co.in
Department of Chemistry, Jamal Mohamed College (Autonomous),Tiruchirappalli, TN, India. P. Vijaya Kumar, Department of Chemistry, Jamal Mohamed College (Autonomous),Tiruchirappalli, TN, India. G. Srikesh Department of Chemistry, Karunya University, Coimbatore, TN, India

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Abstract

Graphene has been offered as a promising two dimensional nanomaterial with outstanding electric, thermal and mechanical properties for many applications. Here we narratea facile approach to prepare a reduced graphene oxide-cobalt oxidenanocomposite (rGO-CoO) via a general co-precipitation method at 80 °C and within 6 hours reaction period and the final product was annealed at 500 °C. Transmission electron microscope images show that the cobalt oxide nanoparticles (10-20 nm) are encapsulated by a reduced graphene oxide shell. The oxidation states of the nanocomposite were confirmed by XPS studies. The electrochemical properties of the nanocomposite were investigated by using cyclic voltammetry (CV). A maximum specific capacitance of 175 F/g was obtained at a scan rate of 10 mV/s.

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Reference

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