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Title of Journal: Nano Res

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Abbravation: Nano Research

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Tsinghua University Press

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1998-0000

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Immobilization of NiS nanoparticles on Ndoped car

Authors: Youfang Zhang Lizeng Zuo Longsheng Zhang Jiajie Yan Hengyi Lu Wei Fan Tianxi Liu
Publish Date: 2016/07/20
Volume: 9, Issue: 9, Pages: 2747-2759
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Abstract

NiS nanoparticles NPs with excellent electrochemical capacitance have attracted considerable attention as costeffective energystorage materials for supercapacitors in recent years Preventing the aggregation and increasing the conductivity of NiS NPs are key to fully realizing their excellent electrochemical properties In this work NiS/Ndoped carbon fiber aerogel NCFA nanocomposites were obtained easily through the combination of polymerization carbonization and a onestep solvothermal reaction NCFA derived from polydopamine PDAcoated cotton wool was used as a template for the construction of hierarchical NiS/NCFA nanocomposites in which NiS NPs are uniformly immobilized on the surface of NCFA In this nanostructured system NCFA containing abundant nanofibers not only provides active regions for the growth of NiS NPs to prevent their aggregation but also offers short pathways for the transport of electrons and ions The electrochemical properties of the obtained NiS/NCFA nanocomposites were investigated by cyclic voltammetry galvanostatic charge–discharge and alternating current impedance measurements The optimized NiS/NCFA nanocomposite exhibits a high specific capacitance of 16125 F·g‒1 at a charge/discharge current density of 1 A·g‒1 and excellent rate capacitance retention of 667 at 20 A·g‒1 The excellent electrochemical properties of NiS/NCFA nanocomposites make these materials promising electrode materials for supercapacitors

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