Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

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 (doi: 10.20944/preprints202003.0312.v1). Park, K. Modification of Graphene Oxide and Preparation of RuO2 Nanocomposites. Preprints 2020, 2020030312 (doi: 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.

Subject Areas

graphene oxide; nano composite; ruthenium oxide; supercapacitor; XRD; XPS

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our diversity statement.

Leave a public comment
Send a private comment to the author(s)
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.