Electro-exfoliating graphene from graphite for direct fabrication of supercapacitor
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 signif...
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2016
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| Online Access: | http://psasir.upm.edu.my/id/eprint/54146/1/Electro-exfoliating%20graphene%20from%20graphite%20for%20direct%20fabrication%20of%20supercapacitor.pdf |
| _version_ | 1796976022464233472 |
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| author | Abdul Bashid, Hamra Assyaima Lim, Hong Ngee Chee, W. K. Huang, Nay Ming |
| author_facet | Abdul Bashid, Hamra Assyaima Lim, Hong Ngee Chee, W. K. Huang, Nay Ming |
| author_sort | Abdul Bashid, Hamra Assyaima |
| collection | UPM |
| description | 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. |
| first_indexed | 2024-03-06T09:19:49Z |
| format | Article |
| id | upm.eprints-54146 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T09:19:49Z |
| publishDate | 2016 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | upm.eprints-541462018-03-01T02:52:52Z http://psasir.upm.edu.my/id/eprint/54146/ Electro-exfoliating graphene from graphite for direct fabrication of supercapacitor Abdul Bashid, Hamra Assyaima Lim, Hong Ngee Chee, W. K. Huang, Nay Ming 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. Elsevier 2016-01 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/54146/1/Electro-exfoliating%20graphene%20from%20graphite%20for%20direct%20fabrication%20of%20supercapacitor.pdf Abdul Bashid, Hamra Assyaima and Lim, Hong Ngee and Chee, W. K. and Huang, Nay Ming (2016) Electro-exfoliating graphene from graphite for direct fabrication of supercapacitor. Applied Surface Science, 360 (pt. A). pp. 213-223. ISSN 0169-4332; ESSN: 1873-5584 https://www.sciencedirect.com/science/article/pii/S0169433215026811 Graphene; Surfactant; Oxidizing agent; Electrochemical exfoliation; Supercapacitor 10.1016/j.apsusc.2015.11.006 |
| spellingShingle | Graphene; Surfactant; Oxidizing agent; Electrochemical exfoliation; Supercapacitor Abdul Bashid, Hamra Assyaima Lim, Hong Ngee Chee, W. K. Huang, Nay Ming Electro-exfoliating graphene from graphite for direct fabrication of supercapacitor |
| title | Electro-exfoliating graphene from graphite for direct fabrication of supercapacitor |
| title_full | Electro-exfoliating graphene from graphite for direct fabrication of supercapacitor |
| title_fullStr | Electro-exfoliating graphene from graphite for direct fabrication of supercapacitor |
| title_full_unstemmed | Electro-exfoliating graphene from graphite for direct fabrication of supercapacitor |
| title_short | Electro-exfoliating graphene from graphite for direct fabrication of supercapacitor |
| title_sort | electro exfoliating graphene from graphite for direct fabrication of supercapacitor |
| topic | Graphene; Surfactant; Oxidizing agent; Electrochemical exfoliation; Supercapacitor |
| url | http://psasir.upm.edu.my/id/eprint/54146/1/Electro-exfoliating%20graphene%20from%20graphite%20for%20direct%20fabrication%20of%20supercapacitor.pdf |
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