Abstract
Vertical copper oxide (CuO) nanoflakes have been formed by oxidation in NaOH solution. Their structural, surface morphology and oxidation states were characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and X-ray photoelectron spectroscopy (XPS) respectively. Pseudocapacitive behavior of CuO nanoflakes was investigated by cyclic voltammetry and constant current charge–discharge test. CuO nanoflakes were vertically grown with high lateral aspect ratio and consist of monoclinic lattice as shown by the presence of two peaks close to 2θ=35.6o and 38.7o in the XRD. Charge–discharge test gave a capacitance value of 190Fg−1 in 1.0M KOH electrolyte at 2mAcm−2 current density. The cycling test showed 67% stability after 2000cycles and reduced specific capacitance from 190Fg−1 to 125Fg−1. Specific capacitance of CuO nanoflakes is higher than 26.44Fg−1 of globular CuO at 2mAcm−2 as reported in literature due to enhanced specific surface area.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
