Wang Weichao, Zhang Yaju, Wu Guoxi, Zhao Zhengyin, Wu Yonghui, Zheng Haiwu
School of Science, Xuchang University Xuchang 461000 China.
International Joint Research Laboratory of New Energy Materials and Devices of Henan Province, School of Physics and Electronics, Henan University Kaifeng 475004 China
Nanoscale Adv. 2024 May 10;6(14):3566-3572. doi: 10.1039/d4na00222a. eCollection 2024 Jul 9.
The abundant water wave energy on Earth stands as one of the most promising renewable blue energy sources, as it exhibits minimal dependence on weather, time and temperature. However, the low fluctuation frequency and extremely irregular nature of the wave energy restrict both the methods and efficiency of energy harvesting. In this study, a packed box-like hybrid nanogenerator was designed, comprising two single-electrode triboelectric nanogenerators (TENGs) and two electromagnetic generators (EMGs). The outputs of both the TENG and EMG were demonstrated under different fluctuation frequencies and swing amplitudes, inspiring the development of a wave warning system. The maximum output voltage, current, and transferred charge of the single TENG, as part of hybrid nanogenerator (HG), reach approximately 110 V, 2.3 μA, and 50 nC, respectively. Its peak power reaches 85.3 μW under a resistance load of 20 MΩ at a frequency of 2 Hz. The EMG component produced maximum output voltages and currents of up to 0.45 V and 1.2 mA, respectively. The peak power is approximately 95.6 μW with a resistance load of 200 Ω. The output performances of the TENG and EMG increase linearly with the increase in the swing angle. Most importantly, a packed box-like hybrid nanogenerator can be conveniently packaged for harvesting energy from water waves. A wave energy collection array floating on the sea is proposed for harvesting blue energy and creating a self-powered ocean wave warning system.
地球上丰富的水波能量是最具潜力的可再生蓝色能源之一，因为它对天气、时间和温度的依赖极小。然而，波能的低波动频率和极其不规则的特性限制了能量收集的方法和效率。在本研究中，设计了一种盒装混合纳米发电机，它由两个单电极摩擦纳米发电机（TENG）和两个电磁发电机（EMG）组成。在不同波动频率和摆动幅度下展示了TENG和EMG的输出，这激发了海浪预警系统的发展。作为混合纳米发电机（HG）一部分的单个TENG的最大输出电压、电流和转移电荷分别达到约110 V、2.3 μA和50 nC。在2 Hz频率下，20 MΩ电阻负载下其峰值功率达到85.3 μW。EMG组件产生的最大输出电压和电流分别高达0.45 V和1.2 mA。在200 Ω电阻负载下峰值功率约为95.6 μW。TENG和EMG的输出性能随摆动角度的增加而线性增加。最重要的是，盒装混合纳米发电机便于封装，可用于从水波中收集能量。提出了一种漂浮在海上的波能收集阵列，用于收集蓝色能源并创建一个自供电的海浪预警系统。
