Functionalized graphene foam as electrode for improved electrochemical storage

Show simple item record Bello, Abdulhakeem Fabiane, Mopeli Momodu, Damilola Y. Khamlich, Saleh Dangbegnon, Julien K. Manyala, Ncholu I. 2014-09-29T10:15:05Z 2014-09
dc.description.abstract We report on a non-covalent functionalization of graphene foam (GF) synthesized via chemical vapour deposition (CVD). The GF was treated with pyrene carboxylic acid (PCA) which acted as a source of oxygen and/or hydroxyl groups attached to the surface of the graphene foam for its electrochemical performance improvement. The modified graphene surface enabled a high pseudocapacitive effect on the GF. A specific capacitance of 133.3 F g−1, power density ∼ 145.3 kW kg−1 and energy density ∼ 4.7 W h kg−1 were achieved based on the functionalized foam in 6 M KOH aqueous electrolyte. The results suggest that non-covalent functionalization might be an effective approach to overcome the restacking problem associated with graphene electrodes and also signify the importance of surface functionalities in graphene-based electrode materials. en_US
dc.description.embargo 2015-09-30
dc.description.librarian hb2014 en_US
dc.description.sponsorship South African Research Chairs Initiative of the Department of Science and Technology (SARCHi-DST), the National Research Foundation (NRF) and University of Pretoria. en_US
dc.description.uri en_US
dc.identifier.citation Bello, A, Fabiane, M, Momodu, DY, Khamlich, S, Dangbegnon, JK & Manyala, N 2014, 'Functionalized graphene foam as electrode for improved electrochemical storage', Journal of Solid State Electrochemistry, vol. 18, no. 9, pp. 2359-2365. en_US
dc.identifier.issn 1432-8488 (print)
dc.identifier.issn 1433-0768 (online)
dc.identifier.other 10.1007/s10008-014-2473-4
dc.language.iso en en_US
dc.publisher Springer en_US
dc.rights © Springer-Verlag Berlin Heidelberg 2014. The original publication is available at : en_US
dc.subject Graphene foam (GF) en_US
dc.subject Pyrene carboxylic acid (PCA) en_US
dc.subject Chemical vapour deposition (CVD) en_US
dc.subject Supercapacitor en_US
dc.title Functionalized graphene foam as electrode for improved electrochemical storage en_US
dc.type Postprint Article en_US

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