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Issue 45, 2016, Issue in Progress
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Asymmetric supercapacitor based on VS2 nanosheets and activated carbon materials

Tshifhiwa M. Masikhwa,a  Farshad Barzegar,a  Julien K. Dangbegnon,a  Abdulhakeem Bello,a  Moshawe J. Madito,a  Damilola Momodua  and  Ncholu Manyala*a 
Author affiliations

* Corresponding authors

a Department of Physics, Institute of Applied Materials, SARCHI Chair in Carbon Technology and Materials, University of Pretoria, Pretoria 0028, South Africa
E-mail: ncholu.manyala@up.ac.za
Fax: +27 (0)12 420 2516
Tel: +27 (0)12 420 3549

Abstract

An asymmetric supercapacitor was fabricated using VS2 nanosheets as the positive electrode and activated carbon (AC) as the negative electrode, with a 6 M KOH solution as electrolyte. These materials were combined to maximize the specific capacitance and enlarge the potential window, therefore improving the energy density of the device. A specific capacitance of 155 F g−1 at 1 A g−1 with a maximum energy density as high as 42 W h kg−1 and a power density of 700 W kg−1 was obtained for the asymmetric supercapacitor within the voltage range of 0–1.4 V. The supercapacitor also exhibited good stability, with ∼99% capacitance retention and no capacitance loss after 5000 cycles at a current density of 2 A g−1.

Graphical abstract: Asymmetric supercapacitor based on VS2 nanosheets and activated carbon materials

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Publication details

The article was received on 18 Dec 2015, accepted on 29 Mar 2016 and first published on 01 Apr 2016


Article type: Paper
DOI: 10.1039/C5RA27155J
Citation: RSC Adv., 2016,6, 38990-39000
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    Asymmetric supercapacitor based on VS2 nanosheets and activated carbon materials

    T. M. Masikhwa, F. Barzegar, J. K. Dangbegnon, A. Bello, M. J. Madito, D. Momodu and N. Manyala, RSC Adv., 2016, 6, 38990
    DOI: 10.1039/C5RA27155J

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