首页> 外文期刊>Nanotechnology >In situ grown Ni9S8 nanorod/O-MoS2 nanosheet nanocomposite on carbon cloth as a free binder supercapacitor electrode and hydrogen evolution catalyst
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In situ grown Ni9S8 nanorod/O-MoS2 nanosheet nanocomposite on carbon cloth as a free binder supercapacitor electrode and hydrogen evolution catalyst

机译:原位生长的NI9S8纳米棒/ O-MOS2纳米片纳米复合物在碳布上作为游离粘合剂超级电容器电极和氢进化催化剂

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摘要

Transition metal sulfide nanostructure composites have received significant attention as energy conversion and storage devices. In this work, we report a three-dimension (3D) nanostructure with the Ni9S8 nanorods embedded in oxygen-incorporated MoS2 (O-MoS2) nanosheets for supercapacitors and hydrogen evolution catalysts. The in situ grown Ni9S8/O-MoS2 nanocomposite on carbon cloth can be used as a free binder supercapacitor electrode and hydrogen evolution catalyst. The Ni9S8/O-MoS2 nanocomposite exhibits electrochemical behaviors with a specific capacitance of 907 F g(-1) (at 2 A g(-1)) and good cycle stability after 1200 cycles due to its unique mutual embedding 3D nanostructure. Furthermore, the Ni9S8/O-MoS2 nanocomposite also shows highly electrocatalytic features for hydrogen production with an onset overpotential of similar to 150 mV and a low Tafel slope of similar to 81 mV dec(-1). The oxygen incorporation of MoS2 provides more active sites to participate in the catalytic process for the hydrogen evolution reaction.
机译:过渡金属硫化物纳米结构复合材料已作为能量转换和储存装置接受了显着的关注。在这项工作中,我们报道了一种三维(3D)纳米结构,其中Ni9S8纳米棒嵌入氧气掺入的MOS2(O-MOS2)纳米片中,用于超级电容器和氢进化催化剂。碳布上的原位生长的Ni9S8 / O-MOS2纳米复合材料可用作游离粘合剂超级电容器电极和氢进化催化剂。 Ni9S8 / O-MOS2纳米复合材料表现出具有907fg(-1)的特定电容的电化学行为(在2Ag(-1))和1200次循环后的良好循环稳定性,因为其独特的相互嵌入3D纳米结构。此外,Ni9S8 / O-MOS2纳米复合材料还显示出高度电催化特征,用于氢产生,其起始过电位类似于150 mV和类似于81 mV DEC(-1)的低TAFEL斜率。 MOS2的氧气掺入提供了更多的活性位点以参与氢进化反应的催化过程。

著录项

  • 来源
    《Nanotechnology》 |2017年第44期|共10页
  • 作者单位

    Wuhan Univ Minist Educ China Sch Phys &

    Technol Key Lab Artificial Micro &

    Nanostruct Wuhan 430072 Hubei Peoples R China;

    Wuhan Univ Minist Educ China Sch Phys &

    Technol Key Lab Artificial Micro &

    Nanostruct Wuhan 430072 Hubei Peoples R China;

    Wuhan Univ Minist Educ China Sch Phys &

    Technol Key Lab Artificial Micro &

    Nanostruct Wuhan 430072 Hubei Peoples R China;

    Wuhan Univ Minist Educ China Sch Phys &

    Technol Key Lab Artificial Micro &

    Nanostruct Wuhan 430072 Hubei Peoples R China;

    Wuhan Univ Minist Educ China Sch Phys &

    Technol Key Lab Artificial Micro &

    Nanostruct Wuhan 430072 Hubei Peoples R China;

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

    Ni9S8/O-MoS2 nanocomposite; supercapacitor electrode; hydrogen evolution catalyst; free binder; in situ growth;

    机译:NI9S8 / O-MOS2纳米复合材料;超级电容器电极;氢进化催化剂;自由粘合剂;原位生长;

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