Article
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Modification of Graphene Oxide and Preparation of RuO2 Nanocomposites
Version 1
: Received: 19 March 2020 / Approved: 20 March 2020 / Online: 20 March 2020 (09:27:19 CET)
How to cite: Park, K. Modification of Graphene Oxide and Preparation of RuO2 Nanocomposites. Preprints 2020, 2020030312. https://doi.org/10.20944/preprints202003.0312.v1 Park, K. Modification of Graphene Oxide and Preparation of RuO2 Nanocomposites. Preprints 2020, 2020030312. https://doi.org/10.20944/preprints202003.0312.v1
Abstract
Graphene-oxide (G) was prepared by the Hummers’ method. A G-COOH layer was synthesised using chloroacetic acid and G. To fabricate carboxylated graphene-RuO2 (G-COORu) nano¬¬-composites, RuO2 nano particles were grown on graphene layers using a one-step thermal method, -COOH(G-COOH), and RuCl3. All materials were characterised using X-ray diffraction, transmission electron microscopy, scanning electron microscopy, 13C-nuclear magnetic resonance as well as X-ray photoelectron, Fourier-transform infrared spectroscopy, and Raman. The electrochemical characteristics of the G-COORu supercapacitors were analysed using electrochemical impedance spectroscopy, cyclic voltammetry, constant current charge–discharge tests, and Nyquist impedance plots. The supercapacitors exhibit a specific capacitance of ~125 F g-1 at 100 mA cm-2 within the potential range of 0–1.0 V. The method used here provides a simple approach for the deposition of RuO2 nano particles on graphene layers and can be widened to the fabrication of other classes of hybrids based on G layers for specific technical applications.
Keywords
graphene oxide; nano composite; ruthenium oxide; supercapacitor; XRD; XPS
Subject
Chemistry and Materials Science, Nanotechnology
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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