Examination of high porosity activated carbon obtained from dehydration of white sugar for electrochemical capacitor applications

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dc.contributor.author Oyedotun, Kabir O.
dc.contributor.author Barzegar, Farshad
dc.contributor.author Mirghni, Abdulmajid Abdallah
dc.contributor.author Khaleed, Abubakar A.
dc.contributor.author Masikhwa, T.M. (Tshifhiwa)
dc.contributor.author Manyala, Ncholu I.
dc.date.accessioned 2019-03-13T10:46:37Z
dc.date.issued 2019-01
dc.description.abstract In this research study, we have presented a simple two-step synthesis path to producing a cost-effective, high-porosity carbon material via acidic dehydration of white sugar. The electrochemical behavior of the activated sugar-based carbon material (ASC), activated at 400 °C (ASC 400) and adopted as a supercapacitor electrode in a symmetric device, demonstrated a limit specific capacitance of 242.67 F g–1 at 1 A g–1. The device also demonstrated a good efficacy as an established material for supercapacitors suitable for high-power applications with a satisfactory energy density of 19 Wh kg–1 and a power density of 750 W kg–1 at a gravimetric specific current of 1 A g–1. The results obtained provide a potential route to converting cheap refined biomass sources into highly porous nanostructured materials for energy-storage device applications. en_ZA
dc.description.department Electrical, Electronic and Computer Engineering en_ZA
dc.description.department Physics en_ZA
dc.description.embargo 2020-01-07
dc.description.librarian hj2019 en_ZA
dc.description.sponsorship The South African Research Chairs Initiative of the Department of Science and Technology and National Research Foundation of South Africa under Grant no. 61056. en_ZA
dc.description.uri https://pubs.acs.org/journal/ascecg en_ZA
dc.identifier.citation Oyedotun, K.O., Barzegar, F., Mirghni, A.A. et al. 2019, 'Examination of high porosity activated carbon obtained from dehydration of white sugar for electrochemical capacitor applications', ACS Sustainable Chemistry and Engineering, vol. 7, no. 1, pp. 537-546. en_ZA
dc.identifier.issn 2168-0485 (online)
dc.identifier.other 10.1021/acssuschemeng.8b04080
dc.identifier.uri http://hdl.handle.net/2263/68642
dc.language.iso en en_ZA
dc.publisher American Chemical Society en_ZA
dc.rights © 2018 American Chemical Society en_ZA
dc.subject Carbonization en_ZA
dc.subject Supercapacitor (SC) en_ZA
dc.subject Activated sugar-based carbon material (ASC) en_ZA
dc.subject H2SO4 en_ZA
dc.subject Na2SO4 en_ZA
dc.subject Specific capacitance en_ZA
dc.subject Specific surface area en_ZA
dc.subject White sugar en_ZA
dc.title Examination of high porosity activated carbon obtained from dehydration of white sugar for electrochemical capacitor applications en_ZA
dc.type Postprint Article en_ZA


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