Yang Hongmei, Deng Mingming, Zeng Qixuan, Zhang Xuemei, Hu Jie, Tang Qian, Yang Huake, Hu Chenguo, Xi Yi, Wang Zhong Lin
State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Department of Applied Physics, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China.
Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China.
ACS Nano. 2020 Mar 24;14(3):3328-3336. doi: 10.1021/acsnano.9b08998. Epub 2020 Feb 18.
Vibrations in the environment are usually distributed over a wide frequency spectrum in multiple directions and a weaker amplitude, which makes most of the current vibrational energy collectors limited in practical environmental applications. Herein, a triboelectric-electromagnetic hybridized nanogenerator (TEHG) for low-frequency random microvibrational energy harvesting in all directions and a wide working bandwidth is fabricated. The output peak power of a triboelectric nanogenerator (TENG) up to 3.65 mW is realized (θ = 0.4 rad, = 1 Hz). In addition, a real self-powered seawater splitting system and electrochemical cathodic protection system are fabricated, directly converting blue energy to hydrogen energy, and the ships can achieve self-protection against corrosion. Furthermore, relying on the linear relationship between the number of peaks and the amplitude of vibration, a highly sensitive self-powered vibration amplitude sensor system based on LabVIEW software is achieved, which can be used as an amplitude detection of bridges and earthquake monitoring, This work is an important development for harvesting low-frequency random multiple direction microvibrational energy over a wide working bandwidth and the bright future of blue energy. In addition, it has been successfully applied to the power supply of portable electronic equipment, environmental monitors, and self-powered systems.
环境中的振动通常在多个方向上分布在较宽的频谱范围内，且振幅较弱，这使得目前大多数振动能量收集器在实际环境应用中受到限制。在此，制造了一种用于全方位低频随机微振动能量收集且工作带宽较宽的摩擦电-电磁混合纳米发电机（TEHG）。实现了摩擦纳米发电机（TENG）高达3.65 mW的输出峰值功率（θ = 0.4 rad， = 1 Hz）。此外，制造了一个实际的自供电海水分解系统和电化学阴极保护系统，直接将蓝色能源转化为氢能，并且船舶能够实现自我防腐蚀保护。此外，依靠峰值数量与振动幅度之间的线性关系，实现了基于LabVIEW软件的高灵敏度自供电振动幅度传感器系统，其可用于桥梁的振幅检测和地震监测。这项工作是在宽工作带宽上收集低频随机多方向微振动能量的一项重要进展以及蓝色能源的光明未来。此外，它已成功应用于便携式电子设备、环境监测器和自供电系统的供电。
