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首页> 外文期刊>Nanotechnology >Enhanced performance of multi-dimensional CoS nanoflake/NiO nanosheet architecture with synergetic effect for asymmetric supercapacitor
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Enhanced performance of multi-dimensional CoS nanoflake/NiO nanosheet architecture with synergetic effect for asymmetric supercapacitor

机译：具有对非对称超级电容器的协同效应的多维COS纳米载/ nio纳米载体架构的增强性能

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摘要

Multi-dimensional nanomaterials possess a porous structure and plenty of active sites, so they have promising prospects in supercapacitor applications. As the typical pseudocapacitance materials, interlaced CoS nanoflakes and two-dimensional NiO nanosheets were assembled into multi-dimensional CoS/NiO architectures. The fabricated CoS/NiO nanostructures on nickel foam can directly serve as the supercapacitor electrodes. Such multi-dimensional CoS/NiO architectures exhibit the enhanced electrochemical performances in the light of the cyclic voltammetry curves and galvanostatic charging-discharging (GCD) tests. A multi-dimensional CoS/NiO electrode releases a high specific capacitance of 1620F g(-1) at 1.0 A g(-1) , which is distinctly higher than those of pristine CoS and NiO electrodes. The CoS/NiO//nitrogen-doped carbon nanoarrays (NC) asymmetric supercapacitor (ASC) can operate stably at 1.6 V. The GCD curves of the ASC at diverse current densities within the voltage window of 0-1.6 V exhibit reasonable symmetry. The CoS/NiO//NC ASC shows great long-term cycling performance, it has 93.5% capacity retention after 3000 cycles. Electrochemical analyses and detailed material characterizations are performed to reveal the mechanism for the enhanced performance of capacitance.
机译：多维纳米材料具有多孔结构和充足的活性位点，因此它们在超级电容器应用中具有希望的前景。作为典型的假偶联材料，将交错的COS纳米薄膜和二维NIO纳米片组装成多维COS / NIO架构。镍泡沫上的制造的COS / NIO纳米结构可直接用作超级电容器电极。这种多维COS / NIO架构鉴于循环伏安法曲线和GALVANOTATIC充电 - 放电（GCD）测试的光具有增强的电化学性能。多维Cos / NiO电极在1.0Ag（-1）的高度比G（-1）的高比电容释放，其明显高于原始COS和NIO电极。 COS / NIO //氮掺杂的碳纳米纳拉（NC）不对称超级电容器（ASC）可以稳定地在1.6 V.SEC的GCD曲线​​在0-1.6V的电压窗口内的各种电流密度下表现出合理的对称性。 COS / NIO // NC ASC显示出很大的长期循环性能，它有3000个循环后的93.5％的容量保留。进行电化学分析和详细的材料表征，以揭示增强电容性能的机制。

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  • 来源
    《Nanotechnology》 |2018年第45期|共8页
  • 作者

    Yang Yanqin; Li Songzhan; Liu Feng; Wen Jian; Zhang Nangang; Wang Shengxiang; Liu Kan;

  • 作者单位

    Wuhan Text Univ Hubei Collaborat Innovat Ctr Text Ind Chain Gener Sch Elect &

    Elect Engn Wuhan 430200 Hubei Peoples R China;

    Wuhan Text Univ Hubei Collaborat Innovat Ctr Text Ind Chain Gener Sch Elect &

    Elect Engn Wuhan 430200 Hubei Peoples R China;

    Wuhan Text Univ Hubei Collaborat Innovat Ctr Text Ind Chain Gener Sch Elect &

    Elect Engn Wuhan 430200 Hubei Peoples R China;

    Hubei Normal Univ Hubei Key Lab Pollutant Anal &

    Reuse Technol Coll Phys &

    Elect Sci Huangshi 435002 Peoples R China;

    Wuhan Text Univ Hubei Collaborat Innovat Ctr Text Ind Chain Gener Sch Elect &

    Elect Engn Wuhan 430200 Hubei Peoples R China;

    Wuhan Text Univ Hubei Collaborat Innovat Ctr Text Ind Chain Gener Sch Elect &

    Elect Engn Wuhan 430200 Hubei Peoples R China;

    Wuhan Text Univ Hubei Collaborat Innovat Ctr Text Ind Chain Gener Sch Elect &

    Elect Engn Wuhan 430200 Hubei Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 特种结构材料;
  • 关键词

    multi-dimensional; CoS/NiO; asymmetric supercapacitor; synergetic effect;

    机译：多维;cos / nio;不对称超级电容器;协同效应;

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