Citation
Abstract
A facile production of graphene via electro-exfoliation is demonstrated using different types of oxidizing agent (HNO3, NaNO3, H2SO4 and H2O2) in the presence of sodium dodecylbenzenesulfonate as a surfactant. Different types of surfactant–oxidizing agent solutions in different concentrations significantly influenced the electrochemical exfoliation of graphite rod. The surface morphology, layer thickness and defects of the as-produced graphene are further evaluated. Additionally, the as-produced graphene is fabricated as a supercapacitor electrode via direct vacuum filtration. Nylon membrane and polymer gel, each containing 2.0 M of potassium hydroxide, are utilized to investigate the influence of the electrolyte type on the capacitance performance. Upon 1000 charge/discharge cycles, the nylon membrane electrolyte recorded capacitance retention of 94%, whereas the polymer gel electrolyte recorded an impressive capacitance retention that exceeded 100%. The potential of the fabricated supercapacitor for real applications is manifested by its ability to light up a light-emitting diode upon charging.
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Additional Metadata
| Item Type: | Article |
|---|---|
| Subject: | Graphene; Surfactant; Oxidizing agent; Electrochemical exfoliation; Supercapacitor |
| Divisions: | Faculty of Science Institute of Advanced Technology |
| DOI Number: | https://doi.org/10.1016/j.apsusc.2015.11.006 |
| Publisher: | Elsevier |
| Depositing User: | Nurul Ainie Mokhtar |
| Date Deposited: | 01 Mar 2018 02:52 |
| Last Modified: | 01 Mar 2018 02:52 |
| Altmetrics: | http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.apsusc.2015.11.006 |
| URI: | http://psasir.upm.edu.my/id/eprint/54146 |
| Statistic Details: | View Download Statistic |
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