Abstract
Abstract This paper describes fabrication and characterization of a hybrid nanostructure comprised of multi-walled carbon nanotubes (MWCNTs) on reduced graphene oxide (r-GO) via layer by layer (LBL) assembly. This structure was prepared by vacuum filtration and heat-treated at 500 °C. The morphology of the sample was investigated by field emission electron microscopy (FE-SEM). The crystalline structure and chemical composition were characterized by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), respectively. Cyclic voltammetry (CV) curve of MWCNTs/r-GO hybrid film appeared close to that of an ideal double layer capacitor, in quasi-rectangular shape. The current density gradually increased with increasing voltage scanning rate, exceeding 20 A/g at a scan rate of 500 mV/s. Accordingly, the specific capacitance decreased with the increase of the voltage scanning rate as expected. Electrochemical performance of this hybrid film indicates that it can further improve supercapacitor electrodes.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.