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首页> 外文期刊>Advanced energy materials >A High Performance Stretchable Asymmetric Fiber-Shaped Supercapacitor with a Core-Sheath Helical Structure
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A High Performance Stretchable Asymmetric Fiber-Shaped Supercapacitor with a Core-Sheath Helical Structure

机译：具有芯鞘螺旋结构的高性能可拉伸不对称纤维形超级电容器

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摘要

The emerging fiber-shaped supercapacitors (FSSs) have motivated tremendous research interest in energy storage devices. However, challenges still exist in the pursuit of combination of excellent electrochemical performance and mechanical stretchability. Here, a core-sheath asymmetric FSS is first made by wrapping gel electrolyte coated carbon nanotube (CNT)@MnO2 core fiber with CNT@PPy composite film. Then a stretchable helical structure is formed by over-twisting the FSS. The resulted stretchable asymmetric FSS exhibits a specific capacitance of 60.435 mF cm(-2) at the scan rate of 10 mV s(-1) and the capacitance performance is well maintained during repeated stretching to 20% strain. Furthermore, a high energy density of 18.88Wh cm(-2) is achieved for the stretchable FSS due to its high specific capacitance and extended potential window of 1.5 V.
机译：新兴的纤维状超级电容器（FSS）激发了对储能设备的巨大研究兴趣。然而，在追求优异的电化学性能和机械拉伸性的组合方面仍然存在挑战。在此，首先通过将涂有凝胶电解质的碳纳米管（CNT）@ MnO2芯纤维包裹在CNT @ PPy复合膜上，制成芯鞘非对称FSS。然后，通过过度缠绕FSS形成可拉伸的螺旋结构。所得的可拉伸不对称FSS在10 mV s（-1）的扫描速率下显示出60.435 mF cm（-2）的比电容，并且在重复拉伸至20％应变期间可以很好地保持电容性能。此外，由于其可伸缩的FSS具有高比电容和1.5 V的扩展电位窗口，因此可实现18.88Wh cm（-2）的高能量密度。

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  • 来源
    《Advanced energy materials》 |2017年第3期|1600976.1-1600976.8|共8页
  • 作者

    Yu Jiali; Lu Weibang; Smith Joseph P.; Booksh Karl S.; Meng Linghui; Huang Yudong; Li Qingwen; Byun Joon-Hyung; Oh Youngseok; Yan Yushan; Chou Tsu-Wei;

  • 作者单位

    Harbin Inst Technol, Sch Chem Engn & Technol, Harbin 150001, Peoples R China|Univ Delaware, Dept Mech Engn, Newark, DE 19716 USA;

    Suzhou Inst Nanotech & Nanobion, Suzhou 215123, Peoples R China;

    Univ Delaware, Dept Chem & Biochem, Newark, DE 19716 USA;

    Univ Delaware, Dept Chem & Biochem, Newark, DE 19716 USA;

    Harbin Inst Technol, Sch Chem Engn & Technol, Harbin 150001, Peoples R China;

    Harbin Inst Technol, Sch Chem Engn & Technol, Harbin 150001, Peoples R China;

    Suzhou Inst Nanotech & Nanobion, Suzhou 215123, Peoples R China;

    Korean Inst Mat Sci, Composites Res Ctr, Chang Won 641831, South Korea;

    Korean Inst Mat Sci, Composites Res Ctr, Chang Won 641831, South Korea;

    Univ Delaware, Ctr Catalyt Sci & Technol, Dept Chem & Biomol Engn, Newark, DE 19716 USA;

    Univ Delaware, Dept Mech Engn, Newark, DE 19716 USA;

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  • 正文语种 eng
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  • 关键词

    asymmetric configuration; carbon nanotubes; manganese oxides; polypyrrole; supercapacitors;

    机译：不对称构型碳纳米管锰氧化物聚吡咯超级电容器;

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