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Issue 5, 2018
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Synthesis of cobalt-doped nickel sulfide nanomaterials with rich edge sites as high-performance supercapacitor electrode materials

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Abstract

In this study, cobalt-doped nickel sulfide nanomaterials are synthesized. The experimental results show that cobalt is successfully doped into the lattice of NiS2. Co-doping causes the hollow sphere sulphides to break down and favors the formation of NixCo1−xS2 nanostructures with high-density active edge sites. The Ni0.75Co0.25S2 sample exhibits a high specific capacitance of 2141.9 F g−1 at a current density of 2 A g−1 due to its fluffy characteristics and edge site-enriched nanostructure. The asymmetric supercapacitor based on Ni0.75Co0.25S2 exhibits a high energy density (54.9 Wh kg−1) and stable cycling durability with 85.1% capacitance retention after 4000 cycles.

Graphical abstract: Synthesis of cobalt-doped nickel sulfide nanomaterials with rich edge sites as high-performance supercapacitor electrode materials

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Publication details

The article was received on 25 Feb 2018, accepted on 26 Mar 2018 and first published on 27 Mar 2018


Article type: Research Article
DOI: 10.1039/C8QI00172C
Citation: Inorg. Chem. Front., 2018,5, 1218-1225
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    Synthesis of cobalt-doped nickel sulfide nanomaterials with rich edge sites as high-performance supercapacitor electrode materials

    S. Xie, J. Gou, B. Liu and C. Liu, Inorg. Chem. Front., 2018, 5, 1218
    DOI: 10.1039/C8QI00172C

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