najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2016-7-3-482-487najo-1256Research ArticlePAPERS, PRESENTED AT NANO-2015PAPERS, PRESENTED AT NANO-2015Effect of precipitating agent NaOH on the preparation of copper oxide nanostructures for electrochemical applicationsEffect of precipitating agent NaOH on the preparation of copper oxide nanostructures for electrochemical applicationsBalasubramaniamМ.BalasubramaniamM.

Guindy campus, Chennai – 600 025

Guindy campus, Chennai – 600 025

balasuga@yahoo.comBalakumarS.BalakumarS.

Guindy campus, Chennai – 600 025

Guindy campus, Chennai – 600 025

balasuga@yahoo.comNational Centre for Nanoscience and Nanotechnology, University of MadrasNational Centre for Nanoscience and Nanotechnology, University of Madras20162008202573482487Copyright © Balasubramaniam M., Balakumar S., 20252025Balasubramaniam М., Balakumar S.Balasubramaniam M., Balakumar S.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/1256

Copper oxide (CuO) nanostructures with different concentrations of sodium hydroxide for electrochemical applications such as supercapacitors have been synthesized using a simple and low-cost precipitation method. X-ray diffraction pattern confirmed the formation of CuO nanostructures without any impurities and further confirmed its highly crystalline, single phase, monoclinic nature. UV-diffuse reflectance spectral (UV-DRS) studies provided the absorption edge of the material and the estimated band gap value for the nanostructures were calculated using Kubelka-Munk (KM) absorbance plot that are determined to be around 4.74 – 4.84 eV. Field emission scanning electron microscopy (FESEM) investigations revealed the morphology of the copper oxide nanocrystals and showed the increment of diameter of the CuO nanostructures. The electrochemical behavior of the CuO nanostructures were investigated using electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) techniques which showed the stability, reversibility, symmetric and capacitive nature of the nanostructures.

Copper oxide (CuO) nanostructures with different concentrations of sodium hydroxide for electrochemical applications such as supercapacitors have been synthesized using a simple and low-cost precipitation method. X-ray diffraction pattern confirmed the formation of CuO nanostructures without any impurities and further confirmed its highly crystalline, single phase, monoclinic nature. UV-diffuse reflectance spectral (UV-DRS) studies provided the absorption edge of the material and the estimated band gap value for the nanostructures were calculated using Kubelka-Munk (KM) absorbance plot that are determined to be around 4.74 – 4.84 eV. Field emission scanning electron microscopy (FESEM) investigations revealed the morphology of the copper oxide nanocrystals and showed the increment of diameter of the CuO nanostructures. The electrochemical behavior of the CuO nanostructures were investigated using electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) techniques which showed the stability, reversibility, symmetric and capacitive nature of the nanostructures.

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The authors declare that there are no conflicts of interest present.