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Making Stretchable Hybrid Supercapacitors by Knitting Non-Stretchable Metal Fibers

机译：通过针织无拉伸金属纤维制作可拉伸的混合式超级电容器

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摘要

To obtain supercapacitors for wearable electronic devices, highly conductive stretchable electrode substrates with excellent tensile recovery are required. However, the simultaneous realization of the above mentioned characteristics is difficult. In this study, tough stainless-steel fibers (SSFs) are employed as the substrates for knitting into stainless-steel meshes (SSMs), for the fabrication of textile electrodes with typical 2D-interconnected networks. The obtained knitted networks can transform the angular elasticity of SSFs into the stretchability of the textile electrodes. The electrodes based on the SSM substrates can be obtained via the in situ growth of NiCo(2)S(4)nanosheets covered by CoS(2)nanowires, which exhibit a high specific capacity, high rate capability, and excellent cycling stability. Moreover, the first stretchable solid-state hybrid supercapacitors based on SSM display excellent performances with respect to a high energy density (60.2 Wh kg(-1)at 800 W kg(-1)), remarkable tensile recovery (= 40% elongation), and high stability (approximate to 76.4% capacity retention at 30% strain for 1000 stretching cycles). The highly stretchable supercapacitor is sewn on the elbow of a garment to drive a light-emitting diode, and it maintains a high performance with respect to the repetitive process of bending and straightening, thus demonstrating the high applicability of the designed SSMs to wearable electronics.
机译：为了获得可穿戴电子器件的超级电容器，需要具有优异拉伸回收的高导电伸缩电极基板。然而，同时实现上述特征是困难的。在该研究中，使用坚韧的不锈钢纤维（SSF）作为用于编织成不锈钢网（SSMS）的基板，用于用典型的2D互连的网络制造纺织电极。所获得的编织网络可以将SSF的角度弹性转化为纺织电极的拉伸性。基于SSM底物的电极可以通过由COS（2）纳米线覆盖的Nico（2）S（4）纳米晶片的原位生长获得，其表现出高比容量，高速率能力和优异的循环稳定性。此外，基于SSM的第一可拉伸固态杂交超级电容器在800W kg（-1））的高能量密度（60.2WH kg（-1））上显示出优异的性能，显着的拉伸回收率（<= 40％的伸长率） ）和高稳定性（近似为30％拉伸循环的30％菌株的76.4％的容量保留）。高伸缩超级电容器缝制在衣服的弯头上以驱动发光二极管，并且它相对于弯曲和矫直的重复过程保持高性能，从而证明所设计的SSM的高适用性是可穿戴电子设备的高适用性。

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  • 来源
    《Advanced Functional Materials》 |2020年第35期|2003153.1-2003153.13|共13页
  • 作者

    Shao Guangwei; Yu Rui; Zhang Xin; Chen Xing; He Faliang; Zhao Xin; Chen Nanliang; Ye Meidan; Liu Xiang Yang;

  • 作者单位

    East China JiaoTong Univ Inst Adv Mat 808 Shuanggang East St Nanchang 330013 Jiangxi Peoples R China|Donghua Univ Coll Text Minist Educ Engn Res Ctr Tech Text Shanghai 201620 Peoples R China;

    Xiamen Univ Res Inst Biomimet & Soft Matter Fujian Prov Key Lab Soft Funct Mat Res Coll Phys Sci & Technol Xiamen 361005 Peoples R China;

    Xiamen Univ Res Inst Biomimet & Soft Matter Fujian Prov Key Lab Soft Funct Mat Res Coll Phys Sci & Technol Xiamen 361005 Peoples R China;

    Xiamen Univ Res Inst Biomimet & Soft Matter Fujian Prov Key Lab Soft Funct Mat Res Coll Phys Sci & Technol Xiamen 361005 Peoples R China;

    Xiamen Univ Res Inst Biomimet & Soft Matter Fujian Prov Key Lab Soft Funct Mat Res Coll Phys Sci & Technol Xiamen 361005 Peoples R China;

    Xiamen Univ Res Inst Biomimet & Soft Matter Fujian Prov Key Lab Soft Funct Mat Res Coll Phys Sci & Technol Xiamen 361005 Peoples R China;

    Donghua Univ Coll Text Minist Educ Engn Res Ctr Tech Text Shanghai 201620 Peoples R China;

    Xiamen Univ Res Inst Biomimet & Soft Matter Fujian Prov Key Lab Soft Funct Mat Res Coll Phys Sci & Technol Xiamen 361005 Peoples R China;

    East China JiaoTong Univ Inst Adv Mat 808 Shuanggang East St Nanchang 330013 Jiangxi Peoples R China|Xiamen Univ Res Inst Biomimet & Soft Matter Fujian Prov Key Lab Soft Funct Mat Res Coll Phys Sci & Technol Xiamen 361005 Peoples R China;

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  • 关键词

    hybrid supercapacitor; NiCo2S4; CoS2; stainless-steel mesh; stretchable; wearable;

    机译：混合超级电容器;Nico2S4;COS2;不锈钢网;可伸展;可穿戴;

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