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Synthesis of hierarchical cobalt sulfide/cobalt basic salt nanocomposite via a vapor-phase hydrothermal method for supercapacitors

Abstract

In this work, hierarchical structured cobalt sulfide/cobalt basic salt nanocomposite is successfully synthesized by using cobalt basic salt nanowires as precursor through a vapor-phase hydrothermal process. The as-obtained hierarchical structured cobalt sulfide/cobalt basic salt nanocomposite can be applied as 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 the cobalt basic salt. The excellent electrochemical performances of the cobalt sulfide/cobalt basic salt nanocomposite can be attributed to its unique hierarchical nanostructure.

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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, Accepted Manuscript
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    Synthesis of hierarchical cobalt sulfide/cobalt basic salt nanocomposite via a vapor-phase hydrothermal method for supercapacitors

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

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