Asymmetric supercapacitor based on nanostructured graphene foam/polyvinyl alcohol/formaldehyde and activated carbon electrodes
| dc.contributor.author | Bello, Abdulhakeem | |
| dc.contributor.author | Barzegar, Farshad | |
| dc.contributor.author | Momodu, Damilola Y. | |
| dc.contributor.author | Dangbegnon, Julien K. | |
| dc.contributor.author | Taghizadeh, Fatemeh | |
| dc.contributor.author | Fabiane, Mopeli | |
| dc.contributor.author | Manyala, Ncholu I. | |
| dc.date.accessioned | 2014-11-10T07:08:07Z | |
| dc.date.available | 2014-11-10T07:08:07Z | |
| dc.date.issued | 2015-01 | |
| dc.description.abstract | We present the electrochemical results of highly porous and interconnected carbon material by activation of graphene foam/polyvinyl alcohol-formaldehyde composite material designated as GF/PVA-F. Asymmetric supercapacitor devices were fabricated using the activated material (GF/PVA-F) and activated carbon (AC) as the positive and negative electrodes respectively. The device exhibited a maximum energy density of 42 mWh cm 2, a power density of 0.5 W cm 2 and 98% retention of its initial capacitance after 2000 cycles in an extended cell potential window of 1.8 V in 1 M Na2SO4 aqueous electrolyte. This work shows the great potential of this material for high performance energy storage application. | en_US |
| dc.description.librarian | hj2014 | en_US |
| dc.description.sponsorship | A. Bello, acknowledges University of Pretoria financial support for his PostDoc fellowship, while D. Y. Momodu and F. Barzegar acknowledge financial support from University of Pretoria and NRF for their PhD bursaries. | en_US |
| dc.description.uri | http://www.elsevier.com/locate/jpowsour | en_US |
| dc.identifier.citation | Bello, A, Barzegar, F, Momodu, Damilola, Dangbegnon, J, Taghizadeh, F, Fabiane, M & Manyala, N 2015, 'Asymmetric supercapacitor based on nanostructured graphene foam/polyvinyl alcohol/formaldehyde and activated carbon electrodes', Journal of Power Sources, vol. 273, pp. 305-311. | en_US |
| dc.identifier.issn | 10.1016/j.jpowsour.2014.09.094 | |
| dc.identifier.issn | 0378-7753 (print) | |
| dc.identifier.issn | 1873-2755 (online) | |
| dc.identifier.uri | http://hdl.handle.net/2263/42550 | |
| dc.language.iso | en | en_US |
| dc.publisher | Elsevier | en_US |
| dc.rights | © 2014 Elsevier B.V.All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Journal of Power Sources. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Power Sources, vol. 273, pp. 305-311, 2015. doi : 10.1016/j.jpowsour.2014.09.094. | en_US |
| dc.subject | Graphene foam | en_US |
| dc.subject | Polyvinyl alcohol | en_US |
| dc.subject | Formaldehyde | en_US |
| dc.subject | KOH activation | en_US |
| dc.subject | Asymmetric supercapacitor | en_US |
| dc.title | Asymmetric supercapacitor based on nanostructured graphene foam/polyvinyl alcohol/formaldehyde and activated carbon electrodes | en_US |
| dc.type | Postprint Article | en_US |