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Toward Flexible and Wearable Embroidered Supercapacitors from Cobalt Phosphides-Decorated Conductive Fibers
Nano-Micro Letters ( IF 26.6 ) Pub Date : 2019-10-17 , DOI: 10.1007/s40820-019-0321-x
Jianfeng Wen 1 , Bingang Xu 1 , Jinyun Zhou 1
Affiliation  

Wearable supercapacitors (SCs) are gaining prominence as portable energy storage devices. To develop high-performance wearable SCs, the significant relationship among material, structure, and performance inspired us with a delicate design of the highly wearable embroidered supercapacitors made from the conductive fibers composited. By rendering the conductive interdigitally patterned embroidery as both the current collector and skeleton for the SCs, the novel pseudocapacitive material cobalt phosphides were then successfully electrodeposited, forming the first flexible and wearable in-plane embroidery SCs. The electrochemical measurements manifested that the highest specific capacitance was nearly 156.6 mF cm−2 (65.72 F g−1) at the current density of 0.6 mA cm−2 (0.25 A g−1), with a high energy density of 0.013 mWh cm−2 (5.55 Wh kg−1) at a power density of 0.24 mW cm−2 (100 W kg−1). As a demonstration, a monogrammed pattern was ingeniously designed and embroidered on the laboratory gown as the wearable in-plane SCs, which showed both decent electrochemical performance and excellent flexibility.
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中文翻译:

由装饰有磷化钴的导电纤维制成的柔性可穿戴刺绣超级电容器

作为便携式储能设备,可穿戴式超级电容器(SC)日益受到关注。为了开发高性能可穿戴式SC,材料,结构和性能之间的重要关系激发了我们对由可复合导电纤维制成的高耐磨绣花超级电容器的精巧设计的灵感。通过将导电的叉指式刺绣作为SC的集电器和骨架,新的伪电容材料磷化钴随后成功地电沉积,从而形成了第一个柔性且可穿戴的平面刺绣SC。电化学测量表明,在电流密度为0.6 mA cm -2时,最高比电容接近156.6 mF cm -2(65.72 F g -1)。(0.25 A g -1),以0.013 mWh cm -2(5.55 Wh kg -1)的高能量密度和0.24 mW cm -2(100 W kg -1)的功率密度。作为演示,巧妙地设计了会标图案,并将其绣在实验室工作服上,作为可穿戴式平面SC,既显示出良好的电化学性能,又显示出出色的柔韧性。
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更新日期:2019-10-17
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