Structural and Electrochemical Characteristics of Graphene Nanosheets as Supercapacitor Electrodes
In this paper, graphene oxide (GO) was prepared by the Hummers' method and reduced using hydrazine to produce graphene nanosheets (GNS). Physicochemical characterizations of the prepared materials were performed using XRD, FTIR, TGA, DTA, BET, UV-vis, Raman, and FESEM techniques. The results el...
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| Format: | Article |
| Language: | English |
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Advanced Study Center Co. Ltd.
2015
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| Online Access: | http://umpir.ump.edu.my/id/eprint/12557/ http://umpir.ump.edu.my/id/eprint/12557/1/fist-2015-gomaa-Structural%20and%20Electrochemical.pdf |
| _version_ | 1848819267727785984 |
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| author | Ali, Gomaa A. M. Makhlouf, Salah A. Chong, Kwok Feng M. M., Yusoff |
| author_facet | Ali, Gomaa A. M. Makhlouf, Salah A. Chong, Kwok Feng M. M., Yusoff |
| author_sort | Ali, Gomaa A. M. |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | In this paper, graphene oxide (GO) was prepared by the Hummers' method and reduced using hydrazine to produce graphene nanosheets (GNS). Physicochemical characterizations of the prepared materials were performed using XRD, FTIR, TGA, DTA, BET, UV-vis, Raman, and FESEM techniques. The results elucidate the structure, morphology, mesoporousity and thermal stability of the prepared samples. Detailed electrochemical studies have been conducted on GNS by CV, galvanostatic and complex impedance measurements indicating some interesting features. GNS shows a specific capacitance of 140 F g-1 at 0.05 A g-1. GNS shows high cyclic stability of about 86% over 1100 cycles at a current density of 1 A g-1. The large electrochemical active surface area suggests that most of the nanosheets are accessible to ions adsorption in the electrolyte system. Impedance spectra show low resistance of GNS, supporting its suitability for supercapacitor electrode applications. |
| first_indexed | 2025-11-15T01:50:51Z |
| format | Article |
| id | ump-12557 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T01:50:51Z |
| publishDate | 2015 |
| publisher | Advanced Study Center Co. Ltd. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-125572018-07-26T03:34:57Z http://umpir.ump.edu.my/id/eprint/12557/ Structural and Electrochemical Characteristics of Graphene Nanosheets as Supercapacitor Electrodes Ali, Gomaa A. M. Makhlouf, Salah A. Chong, Kwok Feng M. M., Yusoff QD Chemistry In this paper, graphene oxide (GO) was prepared by the Hummers' method and reduced using hydrazine to produce graphene nanosheets (GNS). Physicochemical characterizations of the prepared materials were performed using XRD, FTIR, TGA, DTA, BET, UV-vis, Raman, and FESEM techniques. The results elucidate the structure, morphology, mesoporousity and thermal stability of the prepared samples. Detailed electrochemical studies have been conducted on GNS by CV, galvanostatic and complex impedance measurements indicating some interesting features. GNS shows a specific capacitance of 140 F g-1 at 0.05 A g-1. GNS shows high cyclic stability of about 86% over 1100 cycles at a current density of 1 A g-1. The large electrochemical active surface area suggests that most of the nanosheets are accessible to ions adsorption in the electrolyte system. Impedance spectra show low resistance of GNS, supporting its suitability for supercapacitor electrode applications. Advanced Study Center Co. Ltd. 2015 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/12557/1/fist-2015-gomaa-Structural%20and%20Electrochemical.pdf Ali, Gomaa A. M. and Makhlouf, Salah A. and Chong, Kwok Feng and M. M., Yusoff (2015) Structural and Electrochemical Characteristics of Graphene Nanosheets as Supercapacitor Electrodes. Reviews on Advanced Materials Science, 41 (1). pp. 35-43. ISSN 1605-8127. (Published) http://www.ipme.ru/e-journals/RAMS/no_14115/04_14115_ali.pdf |
| spellingShingle | QD Chemistry Ali, Gomaa A. M. Makhlouf, Salah A. Chong, Kwok Feng M. M., Yusoff Structural and Electrochemical Characteristics of Graphene Nanosheets as Supercapacitor Electrodes |
| title | Structural and Electrochemical Characteristics of Graphene Nanosheets as Supercapacitor Electrodes |
| title_full | Structural and Electrochemical Characteristics of Graphene Nanosheets as Supercapacitor Electrodes |
| title_fullStr | Structural and Electrochemical Characteristics of Graphene Nanosheets as Supercapacitor Electrodes |
| title_full_unstemmed | Structural and Electrochemical Characteristics of Graphene Nanosheets as Supercapacitor Electrodes |
| title_short | Structural and Electrochemical Characteristics of Graphene Nanosheets as Supercapacitor Electrodes |
| title_sort | structural and electrochemical characteristics of graphene nanosheets as supercapacitor electrodes |
| topic | QD Chemistry |
| url | http://umpir.ump.edu.my/id/eprint/12557/ http://umpir.ump.edu.my/id/eprint/12557/ http://umpir.ump.edu.my/id/eprint/12557/1/fist-2015-gomaa-Structural%20and%20Electrochemical.pdf |