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Issue 10, 2011
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A high-performance asymmetric supercapacitor fabricated with graphene-based electrodes

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Abstract

An asymmetric supercapacitor (ASC) was fabricated using reduced graphene oxide (RGO) sheets modified with ruthenium oxide (RGO–RuO2) or polyaniline (RGO–PANi) as the anode and cathode, respectively. The ASC exhibited a significantly improved capacitive performance in comparison with that of the symmetric supercapacitors fabricated with RGO–RuO2 or RGO–PANi as the electrodes. The improvement was attributed to the broadened potential window in an aqueous electrolyte, leading to an energy density of 26.3 W h kg−1, about two-times higher than that of the symmetrical supercapacitors based on RGO–RuO2 (12.4 W h kg−1) and RGO–PANi (13.9 W h kg−1) electrodes. In addition, a power density of 49.8 kW kg−1 was obtained at an energy density of 6.8 W h kg−1.

Graphical abstract: A high-performance asymmetric supercapacitor fabricated with graphene-based electrodes

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Publication details

The article was received on 25 Mar 2011, accepted on 14 Jun 2011 and first published on 02 Aug 2011


Article type: Paper
DOI: 10.1039/C1EE01354H
Citation: Energy Environ. Sci., 2011,4, 4009-4015
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    A high-performance asymmetric supercapacitor fabricated with graphene-based electrodes

    J. Zhang, J. Jiang, H. Li and X. S. Zhao, Energy Environ. Sci., 2011, 4, 4009
    DOI: 10.1039/C1EE01354H

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