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首页> 外文期刊>Advanced energy materials >Flexible Diamond Fibers for High-Energy-Density Zinc-Ion Supercapacitors
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Flexible Diamond Fibers for High-Energy-Density Zinc-Ion Supercapacitors

机译：用于高能密度锌离子超级电容器的柔性金刚石纤维

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摘要

Supercapacitors supply high power densities but suffer from low energy densities and small specific capacitances. The design and implementation of unique capacitor electrodes are expected to overcome these challenges. Herein, flexible diamond fibers (a fibrous core/shell structure of diamond/carbon fibers) are produced through overgrowing conductive carbon fibers core with a thin boron-doped diamond film as a shell using a chemical vapor deposition technique. The resultant fibers combine the properties of boron-doped diamond with those of carbon fibers. This allows these binder-free diamond fibers to be employed as the positive electrode in the fabrication of zinc-ion supercapacitors. Together with a negative electrode fabricated from zinc nanosheet coated diamond fibers, this diamond supercapacitor delivers a high and stable specific capacitance. More importantly, it delivers high gravimetric and volumetric energy and power densities, even under severe bending states. The performance of this flexible supercapacitor is superior to previous diamond and carbon fiber-based supercapacitors. Such flexible diamond supercapacitors are promising energy storage devices for various flexible electronics.
机译：超级电容器提供高功率密度，但遭受低能量密度和小的特定电容。预期独特电容器电极的设计和实现克服了这些挑战。这里，通过使用化学气相沉积技术的薄硼掺杂的金刚石薄膜过度传导碳纤维芯来生产柔性金刚石纤维（金刚石/碳纤维的纤维/碳纤维）作为壳体制备。所得纤维将硼掺杂金刚石的性质与碳纤维结合起来。这允许这些无粘合剂的金刚石纤维作为锌离子超级电容器制造中的正极。与锌纳芯涂覆的金刚石纤维制造的负电极一起，该钻石超级电容器提供高且稳定的特定电容。更重要的是，即使在严重的弯曲状态下，它也能提供高重量和体积能量和功率密度。这种柔性超级电容器的性能优于先前的金刚石和基于碳纤维的超级电容器。这种柔性钻石超级电容器是各种柔性电子器件的能量存储装置。

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  • 来源
    《Advanced energy materials》 |2020年第44期|2002202.1-2002202.9|共9页
  • 作者

    Jian Ze; Yang Nianjun; Vogel Michael; Leith Stewart; Schulte Anna; Schoenherr Holger; Jiao Tianpeng; Zhang Wenjun; Mueller Julian; Butz Benjamin; Jiang Xin;

  • 作者单位

    Univ Siegen Inst Mat Engn Paul Bonatz Str 9-11 D-57076 Siegen Germany;

    Univ Siegen Inst Mat Engn Paul Bonatz Str 9-11 D-57076 Siegen Germany;

    Univ Siegen Inst Mat Engn Paul Bonatz Str 9-11 D-57076 Siegen Germany;

    Univ Siegen Inst Mat Engn Paul Bonatz Str 9-11 D-57076 Siegen Germany;

    Univ Siegen Phys Chem 1 Adolf Reichwein Str 2 D-57076 Siegen Germany|Univ Siegen Res Ctr Micro & Nanochem & Engn C Dept Chem & Biol Adolf Reichwein Str 2 D-57076 Siegen Germany;

    Univ Siegen Phys Chem 1 Adolf Reichwein Str 2 D-57076 Siegen Germany|Univ Siegen Res Ctr Micro & Nanochem & Engn C Dept Chem & Biol Adolf Reichwein Str 2 D-57076 Siegen Germany;

    City Univ Hong Kong Ctr Super Diamond & Adv Films COSDAF Dept Mat Sci & Engn Kowloon Tat Chee Ave Hong Kong Peoples R China;

    City Univ Hong Kong Ctr Super Diamond & Adv Films COSDAF Dept Mat Sci & Engn Kowloon Tat Chee Ave Hong Kong Peoples R China;

    Univ Siegen Micro & Nanoanalyt Grp Paul Bonatz Str 9-11 D-57076 Siegen Germany;

    Univ Siegen Micro & Nanoanalyt Grp Paul Bonatz Str 9-11 D-57076 Siegen Germany;

    Univ Siegen Inst Mat Engn Paul Bonatz Str 9-11 D-57076 Siegen Germany;

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  • 正文语种 eng
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  • 关键词

    boron-doped diamonds; energy densities; flexible electronics; flexible supercapacitors; zinc-ion supercapacitors;

    机译：硼掺杂的钻石;能量密度;柔性电子;柔性超级电容器;锌离子超级电容器;

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