All-fiber hybrid piezoelectric-enhanced triboelectric nanogenerator for wearable gesture monitoring
All-fiber hybrid piezoelectric-enhanced triboelectric nanogenerator for wearable gesture monitoring
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DOI：
10.1016/j.nanoen.2018.03.033
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发表时间：
2018-06-01
期刊：
影响因子：
17.6
通讯作者：
Brugger, Juergen
中科院分区：
文献类型：
--
作者：
Guo, Yinben;Zhang, Xiao-Sheng;Brugger, Juergen
随着智能服装的潜力不断增加，直接在组织纤维中产生能量的需求促使了基于可穿戴纳米发电机的能量收集器领域的研究增加。目前的挑战仍然是高输出性能、功能化和重要的穿着舒适性的结合。在导电织物上，利用静电纺丝丝素和聚偏氟乙烯（PVDF）纳米纤维制备了一种全纤维混合压电增强摩擦电纳米发电机。由于纳米纤维的大比表面积和丝素蛋白在摩擦起电过程中提供电子的非凡能力，混合纳米发电机表现出优异的电学性能，功率密度为310 μ W/cm(2)。这种新颖的全纤维结构具有普通织物的所有优点，具有灵活的外观和良好的透气性，并且可以定制嵌入任何理想的尺寸和形状的衣服中。此外，制造的装置允许通过手势和相应电信号之间的相关性来识别各种类型的身体运动。作为潜在的应用领域，我们预见了一种针对老年人和高风险区域工作人员的自主可穿戴跌倒警报微系统。
With the increasing potential of smart clothing, the demand for generating energy directly in the tissue fibers has prompted for increased research in the field of energy harvesters based on wearable nanogenerators. Current challenges remain in the combination of high output performance, functionalization, and importantly wearing comfort. Herein, an all-fiber hybrid piezoelectric-enhanced triboelectric nanogenerator fabricated by electrospinning silk fibroin and poly(vinylidene fluoride) (PVDF) nanofibers on conductive fabrics is presented. Due to the large specific surface area of nanofibers and the extraordinary ability of silk fibroin to donate electrons in triboelectrification, the hybrid nanogenerator shows outstanding electrical performance, with a power density of 310 mu W/cm(2). This novel all-fiber configuration provides all benefits of ordinary fabrics having flexible appearance and good air permeability, and moreover it can be custom embedded in clothes in any desirable size and shape. Furthermore, the fabricated device allows identifying various types of body motion by a correlation between gesture and corresponding electrical signal. As potential application field, we foresee an autonomous wearable fall alert microsystem for elderly people and persons working in high risk areas.