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Issue 19, 2019
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NiCo2S4@Ni3S2 hybrid nanoarray on Ni foam for high-performance supercapacitors

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Abstract

Integrated hybrid nanoarrays with hierarchical porous structures have attracted much attention as energy materials for their excellent synergistic effects. Herein, we provide a facile strategy for integrating a NiCo2S4@Ni3S2 hybrid nanoneedle array on nickel foam derived from metal–organic framework (MOF) precursors and a Ni/Co-precursor by sulfurization. When directly used as the free-standing electrode for a supercapacitor, the NiCo2S4@Ni3S2 electrode exhibited a high specific capacitance of 1536.8 F g−1 at 1 A g−1. Furthermore, the assembled NiCo2S4@Ni3S2//AC asymmetric supercapacitor (ASC) exhibited a high energy density of 35.26 W h kg−1 at a power density of 724.93 W kg−1. The capacitance retention of NiCo2S4@Ni3S2 was up to 97.4% after 10 000 cycles.

Graphical abstract: NiCo2S4@Ni3S2 hybrid nanoarray on Ni foam for high-performance supercapacitors

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Publication details

The article was received on 16 Mar 2019, accepted on 11 Apr 2019 and first published on 11 Apr 2019


Article type: Paper
DOI: 10.1039/C9NJ01384A
New J. Chem., 2019,43, 7344-7349

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    NiCo2S4@Ni3S2 hybrid nanoarray on Ni foam for high-performance supercapacitors

    C. Chen, J. Zhou, Y. Li, Q. Li, H. Chen, K. Tao and L. Han, New J. Chem., 2019, 43, 7344
    DOI: 10.1039/C9NJ01384A

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