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Camphoric carbon-grafted Ni/NiO nanowire electrodes for high-performance energy-storage systems

Publication Type : Journal Article

Thematic Areas : Nanosciences and Molecular Medicine

Publisher : ChemPlusChem

Source : ChemPlusChem, Volume 78, Number 10, p.1258-1265 (2013)

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Campus : Kochi

School : Center for Nanosciences

Center : Nanosciences

Department : Nanosciences and Molecular Medicine

Year : 2013

Abstract : The present study provides the first report on the preparation and utilization of camphoric carbon nanobeads grafted onto Ni/NiO nanowires for rechargeable electrodes for energy-storage applications. These functionally graded nanowires were electrophoretically deposited onto nickel foils and processed into high-surface-area electrodes. A detailed study has been performed to elucidate the effect of carbon content, different electrolytes, and their concentrations on these nanowires. BET surface area analysis revealed that these grafted nanowires could exhibit a high surface area of about 106a m2 g-1, compared with pristine nanowires, which exhibited a surface area of about 45a m2 g-1. From the analysis of relevant electrochemical parameters, an intrinsic correlation between the capacitance, internal resistance, and the surface morphology has been deduced. Relative contributions of capacitive and diffusion-controlled processes underlying these thin-film electrodes have been mathematically modeled. These thin-film electrodes exhibited specific mass capacitance values as high as (1950±80) and (1140±60)a F g-1, as determined from cyclic voltammetry and charge discharge curves, respectively; t Copyright © 2013 WILEY-VCH Verlag GmbH amp; Co. KGaA, Weinheim.

Cite this Research Publication : A. Paravannoor, A. S. Nair, Ranjusha, R., Praveen, P., Subramanian, K. R. V., Sivakumar, N., Nair, S. V., and Balakrishnan, A., “Camphoric carbon-grafted Ni/NiO nanowire electrodes for high-performance energy-storage systems”, ChemPlusChem, vol. 78, pp. 1258-1265, 2013.

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