An Amphiphobic Hydraulic Triboelectric Nanogenerator for a Self‐Cleaning and Self‐Charging Power System,Advanced Functional Materials

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An Amphiphobic Hydraulic Triboelectric Nanogenerator for a Self‐Cleaning and Self‐Charging Power System
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2018-07-11 , DOI: 10.1002/adfm.201803117
Qian Zhang ₁ , Qijie Liang ₁ , Qingliang Liao ₁ , Mingyuan Ma ₁ , Fangfang Gao ₁ , Xuan Zhao ₁ , Yiding Song ₁ , Lijuan Song ₁ , Xiaochen Xun ₁ , Yue Zhang _{1,

2}

Affiliation

Raindrop falling, which is one kind of water motions, contains large amount of mechanical energy. However, harvesting energy from the falling raindrop to drive electronics continuously is not commonly investigated. Therefore, a self‐cleaning/charging power system (SPS) is reported, which can be exploited to convert and store energy from falling raindrop directly for providing a stable and durable output. The SPS consists of a hydraulic triboelectric nanogenerator (H‐TENG) and several embedded fiber supercapacitors. The surface of H‐TENG is amphiphobic, enabling the SPS self‐cleaning. The fiber supercapacitor which uses α‐Fe₂O₃/reduced graphene oxide composite possesses remarkable specific capacitance, excellent electrical stability, and high flexibility. These properties of the fiber supercapacitor make it suitable for a wearable power system. A power raincoat based on the SPS is demonstrated as application. After showering by water flow, which simulates falling raindrops, for 100 s, the power raincoat achieves an open‐circuit voltage of 4 V and lights a light‐emitting diode for more than 300 s. With features of low cost, easy installation, and good flexibility, the SPS harvesting energy from the falling raindrop renders as a promising sustainable power source for wearable and portable electronics.

中文翻译：

用于自清洁和自充电动力系统的两性式液压摩擦电纳米发电机

雨滴下落是一种水运动，包含大量的机械能。然而，通常不研究从下落的雨滴中收集能量以连续驱动电子设备。因此，报告了一种自清洁/充电电源系统（SPS），可以利用该系统直接转换和存储雨滴带来的能量，以提供稳定，持久的输出。SPS由水力摩擦电纳米发电机（H-TENG）和几个嵌入式光纤超级电容器组成。H-TENG的表面是两性的，可进行SPS自清洁。使用α‐Fe ₂ O ₃的光纤超级电容器/还原的氧化石墨烯复合材料具有显着的比电容，优异的电稳定性和高柔韧性。光纤超级电容器的这些特性使其适用于可穿戴电源系统。演示了基于SPS的强力雨衣的应用。在模拟流下的雨滴的水流冲淋后，持续100 s，电源雨衣达到4 V的开路电压，并点亮发光二极管300 s以上。SPS具有低成本，易于安装和良好的灵活性的特点，它从雨滴下落中收集能量成为可穿戴和便携式电子设备的有希望的可持续电源。

更新日期：2018-07-11

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