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Issue 20, 2017
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Synthesis of a hierarchical cobalt sulfide/cobalt basic salt nanocomposite via a vapor-phase hydrothermal method as an electrode material for supercapacitor

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Abstract

In this work, a hierarchical structured cobalt sulfide/cobalt basic salt nanocomposite is successfully synthesized by using cobalt basic salt nanowires as a precursor through a vapor-phase hydrothermal process. The as-obtained hierarchical structured cobalt sulfide/cobalt basic salt nanocomposite can be applied as an electrode material for supercapacitors, it exhibits a high specific capacitance of 1984 F g−1 at a current density of 1 A g−1, a good rate capability of 78.6% capacitance retention at a high current density of 20 A g−1 and an excellent cycle stability of 90.2% capacitance retention after 5000 charge–discharge cycles. The specific capacitance of the cobalt sulfide/cobalt basic salt nanocomposite is much higher than that of the cobalt basic salt. The excellent electrochemical performances of the cobalt sulfide/cobalt basic salt nanocomposite can be attributed to its unique hierarchical nanostructure.

Graphical abstract: Synthesis of a hierarchical cobalt sulfide/cobalt basic salt nanocomposite via a vapor-phase hydrothermal method as an electrode material for supercapacitor

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Publication details

The article was received on 06 Jul 2017, accepted on 06 Sep 2017 and first published on 06 Sep 2017


Article type: Paper
DOI: 10.1039/C7NJ02350B
Citation: New J. Chem., 2017,41, 12147-12152
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    Synthesis of a hierarchical cobalt sulfide/cobalt basic salt nanocomposite via a vapor-phase hydrothermal method as an electrode material for supercapacitor

    L. Liu, H. Rong, J. Li, X. Tong and Z. Wang, New J. Chem., 2017, 41, 12147
    DOI: 10.1039/C7NJ02350B

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