School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
Nanotechnology. 2019 Jul 5;30(27):275401. doi: 10.1088/1361-6528/ab0cd5. Epub 2019 Mar 5.
We present a triboelectric energy harvester fabricated with a simple electrospinning process of polyvinylidene fluoride/polyurethane polymers on conductive fabric. This electrospinning process provides higher electrical power output and hydrophobicity driven humidity resistance compared to flat polymer energy harvesters. By using conductive fabric as collector and electrode, the device could retain air permeability and flexibility. The triboelectric energy harvester exhibits a high open-circuit voltage of 45.1 V (at a compressive contact force of 20 N and relative humidity (RH) of 20%), humidity resistance (maintains about 40% of the open-circuit voltage at RH of 80%) and air permeability without deteriorating the air permeability of the fabric. Its durability was tested and shows no significant degradation of electrical output throughout 324,000 cycles of operation. This work suggests an approach for human energy harvesting in textile form with electrospun nanofibers as the contact surfaces of a triboelectric energy harvester.
我们提出了一种通过简单的静电纺丝工艺在导电织物上制备聚偏二氟乙烯/聚氨酯聚合物的摩擦纳米发电机。与平面聚合物能量收集器相比，这种静电纺丝工艺提供了更高的电力输出和由疏水性驱动的耐湿性。通过使用导电织物作为收集器和电极，该器件可以保持透气性和柔韧性。摩擦纳米发电机在开路电压为 45.1 V（在 20 N 的压缩接触力和相对湿度（RH）为 20%的情况下）、耐湿性（在 RH 为 80%时保持约 40%的开路电压）和透气性方面表现出色，同时不会降低织物的透气性。对其耐用性进行了测试，在 324000 次循环运行中，其电输出没有明显的下降。这项工作提出了一种在纺织品中利用静电纺纳米纤维作为摩擦纳米发电机的接触表面进行人体能量收集的方法。
