Triboelectric Yarns with Electrospun Functional Polymer Coatings for Highly Durable and Washable Smart Textile Applications.
Triboelectric Yarns with Electrospun Functional Polymer Coatings for Highly Durable and Washable Smart Textile Applications.
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DOI：
10.1021/acsami.1c00983
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发表时间：
2021-04-14
影响因子：
9.5
通讯作者：
Kar-Narayan S
中科院分区：
文献类型：
--
作者：
Busolo T;Szewczyk PK;Nair M;Stachewicz U;Kar-Narayan S
摩擦发电机因其能够将机械能转化为电能而成为智能纺织品应用的绝佳选择。这种装置可以通过用摩擦电材料涂覆导电芯来制造成纱线，但目前的摩擦电纱线缺乏基于纺织品的应用所需的耐用性和耐洗性。在这项工作中，我们开发了一种独特的摩擦电纱线，包括导电碳纳米管（CNT）纱线电极，该电极涂有通过定制静电纺丝工艺沉积的聚偏二氟乙烯（PVDF）纤维。我们表明，静电纺丝 PVDF 纤维与 CNT 芯材的粘附非常好，产生均匀稳定的摩擦电涂层。 PVDF-CNT同轴纱线在疲劳测试中表现出显着的摩擦电能量收集，在200000次疲劳循环后，功率输出提高了33%，峰值功率密度为20.7 μW cm-2。这可能是由于重复接触后 PVDF 纤维涂层的活性表面积增加所致。此外，我们的摩擦电纱线在 1200 次摩擦循环和 10 次洗涤循环中保留功能，符合纺织行业磨损和洗涤的标准基准。我们在基于纺织品的原型应用中展示了摩擦电纱线的能量收集和运动传感功能，从而强调了其在智能纺织品中的适用性。
Triboelectric generators are excellent candidates for smart textiles applications due to their ability to convert mechanical energy into electrical energy. Such devices can be manufactured into yarns by coating a conductive core with a triboelectric material, but current triboelectric yarns lack the durability and washing resistance required for textile-based applications. In this work, we develop a unique triboelectric yarn comprising a conducting carbon nanotube (CNT) yarn electrode coated with poly(vinylidene fluoride) (PVDF) fibers deposited by a customized electrospinning process. We show that the electrospun PVDF fibers adhere extremely well to the CNT core, producing a uniform and stable triboelectric coating. The PVDF–CNT coaxial yarn exhibits remarkable triboelectric energy harvesting during fatigue testing with a 33% power output improvement and a peak power density of 20.7 μW cm–2 after 200 000 fatigue cycles. This is potentially due to an increase in the active surface area of the PVDF fiber coating upon repeated contact. Furthermore, our triboelectric yarn meets standard textile industry benchmarks for both abrasion and washing by retaining functionality over 1200 rubbing cycles and 10 washing cycles. We demonstrate the energy harvesting and motion sensing capabilities of our triboelectric yarn in prototype textile-based applications, thereby highlighting its applicability to smart textiles.
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