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首页> 外文期刊>Advanced energy materials >Wearable High-Performance Supercapacitors Based on Silver-Sputtered Textiles with FeCo2S4-NiCo2S4 Composite Nanotube-Built Multitripod Architectures as Advanced Flexible Electrodes
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Wearable High-Performance Supercapacitors Based on Silver-Sputtered Textiles with FeCo2S4-NiCo2S4 Composite Nanotube-Built Multitripod Architectures as Advanced Flexible Electrodes

机译：基于溅射银的纺织品的可穿戴高性能超级电容器，采用FeCo2S4-NiCo2S4复合纳米管-内置多脚架架构作为高级柔性电极

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摘要

To achieve high-performance wearable supercapacitors (SCs), a new class of flexible electrodes with favorable architectures allowing large porosity, high conductivity, and good mechanical stability is strongly needed. Here, this study reports the rational design and fabrication of a novel flexible electrode with nanotube-built multitripod architectures of ternary metal sulfides' composites (FeCo2S4-NiCo2S4) on a silver-sputtered textile cloth. Silver sputtering is applicable to almost all kinds of textiles, and S2- concentration is optimized during sulfidation process to achieve such architectures and also a complete sulfidation assuring high conductivity. New insights into concentration-dependent sulfidation mechanism are proposed. The additive-free FeCo2S4-NiCo2S4 electrode shows a high specific capacitance of 1519 F g(-1) at 5 mA cm(-2) and superior rate capability (85.1% capacitance retention at 40 mA cm(-2)). All-solid-state SCs employing these advanced electrodes deliver high energy density of 46 W h kg(-1) at 1070 W kg(-1) as well as achieve remarkable cycling stability retaining 92% of initial capacitance after 3000 cycles at 10 mA cm(-2), and outstanding reliability with no capacitance degradation under large twisting. These are attributed to the components' synergy assuring rich redox reactions, high conductivity as well as highly porous but robust architectures. An almost linear increase in capacitance with devices' area indicates possibility to meet various energy output requirements. This work provides a general, low-cost route to wearable power sources.
机译：为了实现高性能的可穿戴超级电容器（SC），强烈需要一种新型的，具有良好结构的柔性电极，该结构允许大孔隙率，高电导率和良好的机械稳定性。在这里，这项研究报告了一种新颖的柔性电极的合理设计和制造，该柔性电极由纳米管构建的三脚金属硫化物的复合物（FeCo2S4-NiCo2S4）在镀银的纺织布上形成多脚架结构。银溅射适用于几乎所有类型的纺织品，并且在硫化过程中优化了S2-的浓度以实现这种结构，并进行完全硫化以确保高电导率。提出了对浓度依赖性硫化机理的新见解。不含添加剂的FeCo2S4-NiCo2S4电极在5 mA cm（-2）时显示出1519 F g（-1）的高比电容，并具有出色的倍率能力（在40 mA cm（-2）时保持85.1％的电容）。采用这些先进电极的全固态SC在1070 W kg（-1）时可提供46 W h kg（-1）的高能量密度，并具有出色的循环稳定性，在10 mA下经过3000次循环后可保持92％的初始电容cm（-2）和出色的可靠性，并且在大扭转情况下不会降低电容。这些归因于组件的协同作用，可确保丰富的氧化还原反应，高电导率以及高度多孔但坚固的架构。电容随器件面积的增加几乎呈线性增长，表明有可能满足各种能量输出要求。这项工作为使用可穿戴电源提供了一条通用的低成本途径。

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  • 来源
    《Advanced energy materials》 |2017年第2期|1601234.1-1601234.11|共11页
  • 作者

    Zhu Jian; Tang Shaochun; Wu Juan; Shi Xiling; Zhu Baogang; Meng Xiangkang;

  • 作者单位

    Nanjing Univ, Inst Mat Engn, Coll Engn & Appl Sci,Natl Lab Solid State Microst, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China;

    Nanjing Univ, Inst Mat Engn, Coll Engn & Appl Sci,Natl Lab Solid State Microst, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China;

    Nanjing Univ, Inst Mat Engn, Coll Engn & Appl Sci,Natl Lab Solid State Microst, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China;

    Nanjing Univ, Inst Mat Engn, Coll Engn & Appl Sci,Natl Lab Solid State Microst, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China;

    Nanjing Univ, Inst Mat Engn, Coll Engn & Appl Sci,Natl Lab Solid State Microst, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China;

    Nanjing Univ, Inst Mat Engn, Coll Engn & Appl Sci,Natl Lab Solid State Microst, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    composite materials; flexible electrodes; supercapacitors; ternary metal sulfides; wearable power sources;

    机译：复合材料;柔性电极;超级电容器;三元金属硫化物;可穿戴电源;

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