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首页> 外文期刊>Chemistry: A European journal >Microwave-Assisted Rapid Synthesis of Self-Assembled T-Nb_2O_5 Nanowires for High-Energy Hybrid Supercapacitors
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Microwave-Assisted Rapid Synthesis of Self-Assembled T-Nb_2O_5 Nanowires for High-Energy Hybrid Supercapacitors

机译：微波辅助自组装T-NB_2O_5纳米线的高能量杂交超级电容器的快速合成

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摘要

Recently ion-intercalation hybrid supercapacitors, with high energy density at high power density, have been widely investigated to meet ever-increasing practical demands. Here, a unique hybrid supercapacitor has been designed and fabricated using self-assembled orthorhombicphase niobium oxide@carbon (T-Nb_2O_5@C) nanowires as an anode and commercially available activated carbon as a cathode. The 3D-interconnected T-Nb_2O_5@C nanowires have been synthesized through a highly efficient microwave-solvothermal method, combined with subsequent thermal treatment. The experimental parameters (e.g., time and temperature) can be easily programmed, and the synthesis time can be significantly shortened, thus enabling the buildup of abundant recipes for the engineering of scaled-up production. The Li-ion intercalation pseudocapacitance electrode, made from the as-formed self-assembled T-Nb_2O_5@C nanowires, shows excellent charge storage and transfer capability. When assembled into a hybrid supercapacitor with a cathode of activated carbon, a high energy density of 60.6 Whkg~(-1) and a high power density of 8.5 kWkg~(-1) with outstanding stability are achieved. In virtue of easy optimization and programmability of the synthetic strategy, and the remarkable electrochemical performance, the self-assembled T-Nb_2O_5@C nanowires offer a promising anode for asymmetric hybrid supercapacitors.
机译：最近的离子插入杂交超级电容器，具有高功率密度的高能量密度，已被广泛研究，以满足不断增加的实际需求。这里，使用独特的混合超级电容器，使用自组装的正交相结石氧化铌氧化物（T-NB_2O_5 @ C）纳米线设计和制造，作为阳极和可商购的活性炭作为阴极。通过高效的微波 - 溶剂热法合成了3D互连的T-NB_2O_5 @ C纳米线，与随后的热处理相结合。实验参数（例如，时间和温度）可以容易地编程，并且可以显着缩短合成时间，从而能够对扩展生产的工程来实现丰富的食谱。由AS形成的自组装T-NB_2O_5 @ C纳米线制成的锂离子插入假壳电极显示出优异的电荷存储和转移能力。当用活性炭的阴极组装成杂交超级电容器时，实现高能量密度为60.6WHKG〜（-1）和高功率密度为8.5kWKG〜（-1），具有出色的稳定性。凭借易于优化和可编程性的合成策略，以及显着的电化学性能，自组装的T-NB_2O_5 @ C纳米线为不对称杂交超级电容器提供有前途的阳极。

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  • 来源
    《Chemistry: A European journal》 |2017年第17期|共7页
  • 作者

    Huiling Yang; Henghui Xu; Libin Wang; Lei Zhang; Yunhui Huang; Xianluo Hu;

  • 作者单位

    State Key Laboratory of Materials Processing and Die &

    Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 (P. R. China) Fax: (+86) 27-8755-8241;

    State Key Laboratory of Materials Processing and Die &

    Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 (P. R. China) Fax: (+86) 27-8755-8241;

    State Key Laboratory of Materials Processing and Die &

    Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 (P. R. China) Fax: (+86) 27-8755-8241;

    State Key Laboratory of Materials Processing and Die &

    Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 (P. R. China) Fax: (+86) 27-8755-8241;

    State Key Laboratory of Materials Processing and Die &

    Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 (P. R. China) Fax: (+86) 27-8755-8241;

    State Key Laboratory of Materials Processing and Die &

    Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 (P. R. China) Fax: (+86) 27-8755-8241;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 应用化学;
  • 关键词

    anode; electrochemical performance; hybrid supercapacitors; microwave-assisted synthesis; nanomaterials; orthorhombic Nb_2O_5;

    机译：阳极;电化学性能;杂交超级电容器;微波辅助合成;纳米材料;正交NB_2O_5;

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