High-Performance Biscrolled MXene/Carbon Nanotube Yarn Supercapacitors
High-Performance Biscrolled MXene/Carbon Nanotube Yarn Supercapacitors
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DOI：
10.1002/smll.201802225
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发表时间：
2018-09-13
期刊：
影响因子：
13.3
通讯作者：
Razal, Joselito M.
中科院分区：
文献类型：
--
作者：
Wang, Zhiyu;Qin, Si;Razal, Joselito M.
纱线形超级电容器(YSC)一旦被集成到织物中，就可以为日益增长的可穿戴和便携式电子产品提供有前途的储能解决方案。然而，在这种器件格式中，要在不损害灵活性的情况下获得出色的电化学性能是一个挑战。在这里，报告了一种基于MXene的YSC，它通过采用双卷曲的方法，从困在螺旋形纱线走廊中的高度分层和假电容的MXene片材中产生柔性纱线，从而显示出灵活性和优异的储能性能。由于比电容、能量和功率密度的值超过了任何YSC的报道，这项工作表明，双线圈MXene纱线可以潜在地为电子设备提供共形能量解决方案，而不仅仅是柔性YSC的形状因数。
Yarn-shaped supercapacitors (YSCs) once integrated into fabrics provide promising energy storage solutions to the increasing demand of wearable and portable electronics. In such device format, however, it is a challenge to achieve outstanding electrochemical performance without compromising flexibility. Here, MXene-based YSCs that exhibit both flexibility and superior energy storage performance by employing a biscrolling approach to create flexible yarns from highly delaminated and pseudocapacitive MXene sheets that are trapped within helical yarn corridors are reported. With specific capacitance and energy and power densities values exceeding those reported for any YSCs, this work illustrates that biscrolled MXene yarns can potentially provide the conformal energy solution for powering electronics beyond just the form factor of flexible YSCs.