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Issue 20, 2017
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Highly exposed nickel cobalt sulfide–rGO nanoporous structures: an advanced energy-storage electrode material

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Abstract

Uncontrollable diffusion and the associated decrease in rate have hampered the development of robust nanostructured porous metal sulfides to date. Herein, we report a robust and porous NiCo2S4 nanostructure grown on graphene oxide using a facile synthesis method. The obtained ultrathin NiCo2S4 nanosheets contain a broad range of nanopores and their graphene backbone enhances the surface area as well as conductivity of the entire matrix. The advantages of the synthetic approach were evaluated by investigating the supercapacitor efficiency of the obtained nanomaterial, where the highly porous and exposed nanocomposite delivered the high capacitance of 1527 F g−1 at 10 mV s−1 in 1.0 M KOH. The high capacitive nanomaterial electrode coupled with graphene–single wall carbon nanohorn heterostructures provides a maximum energy of 60.9 W h kg−1 at 1.4 kW kg−1 power density, which reveals the merits of the synthetic approach and its application in progressive electrochemical energy storage/conversion devices.

Graphical abstract: Highly exposed nickel cobalt sulfide–rGO nanoporous structures: an advanced energy-storage electrode material

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Publication details

The article was received on 25 Feb 2017, accepted on 20 Apr 2017 and first published on 20 Apr 2017


Article type: Paper
DOI: 10.1039/C7TA01735A
Citation: J. Mater. Chem. A, 2017,5, 9991-9997
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    Highly exposed nickel cobalt sulfide–rGO nanoporous structures: an advanced energy-storage electrode material

    K. P. Annamalai, L. Liu and Y. Tao, J. Mater. Chem. A, 2017, 5, 9991
    DOI: 10.1039/C7TA01735A

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