Nia, Pooria Moozarm and Abouzari-Lotf, Ebrahim and Woi, Pei Meng and Alias, Yatimah and Ting, Teo Ming and Ahmad, Arshad and Che Jusoh, Nurfatehah Wahyuny (2019) Electrodeposited reduced graphene oxide as a highly efficient and low-cost electrocatalyst for vanadium redox flow batteries. Electrochimica Acta, 297. pp. 31-39. ISSN 0013-4686, DOI https://doi.org/10.1016/j.electacta.2018.11.109.
Full text not available from this repository.Abstract
An electrochemically reduced graphene oxide was grown on carbon felt surface in a simple one-step electrodeposition process of graphene oxide and it was employed as a positive electrocatalyst of vanadium redox flow battery. The electrodeposited graphene-based nanocomposite on carbon felt presented outstanding electrochemical redox reversibility toward vanadium redox couple. Based on the cyclic voltammetry data and electrochemical impedance spectroscopy curves, the modified composite electrode possesses a huge amount of oxygen functional groups, high surface area, high electrical conductivity and excellent stability in compared to the pristine carbon felt electrode. The prepared electrode showed promising performance for vanadium redox flow battery as the energy efficiency was significantly enhanced by 12% at current density of 60 mA cm−2. This superior performance was probably due to the increase in the surface sites and fast electron transfer rate of the reduced graphene oxide.
| Item Type: | Article |
|---|---|
| Funders: | Universiti Teknologi Malaysia (Professional Development Research University (Vote no: #04E45 and #17H21)), University of Malaya (Research Grant ST002-2018 and Frontier Research Grant (FG030-17AFR)) |
| Uncontrolled Keywords: | Reduced graphene oxide; Electrodeposition; Vanadium redox flow battery; Electrocatalyst |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
| Divisions: | Faculty of Science > Department of Chemistry |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 17 Jan 2019 01:22 |
| Last Modified: | 18 Mar 2019 04:31 |
| URI: | http://eprints.um.edu.my/id/eprint/20019 |
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