Swing-Structured Triboelectric–Electromagnetic Hybridized Nanogenerator for Breeze Wind Energy Harvesting,Advanced Materials Technologies

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Swing-Structured Triboelectric–Electromagnetic Hybridized Nanogenerator for Breeze Wind Energy Harvesting
Advanced Materials Technologies ( IF 6.4 ) Pub Date : 2021-07-08 , DOI: 10.1002/admt.202100496
Pinjing Lu _{1,

2} , Hao Pang _{1,

2} , Jie Ren _{2,

3} , Yawei Feng _{2,

4} , Jie An _{2,

4} , Xi Liang _{2,

4} , Tao Jiang _{1,

2,

4,

5} , Zhong Lin Wang _{2,

4,

5,

6}

Affiliation

Wind energy is one of the most promising renewable energy sources, but harvesting low frequency breeze wind energy is hardly achieved using traditional electromagnetic generators (EMGs). Triboelectric nanogenerators (TENGs) provide a new approach for large-scale collection of distributed breeze wind energy (usually 3.4–5.4 m s⁻¹). Herein, by coupling the TENG and EMG, a swing-structured hybrid nanogenerator with improved performance and durability is designed. The dielectric brush and air gap designs can minimize the material wear and continuously supply the tribo-charges. Under external triggering, systematic comparisons are made about the output characteristics of TENG and EMG. The rectified peak power and average power of TENG are respectively, 60 and 635 times higher than those of EMG at moderate coil turn numbers, showing that TENG is much more effective than EMG for harvesting low-frequency distributed energy (high entropy energy). Furthermore, the hybrid nanogenerator and array device are hung on tree branches to demonstrate the effective harvesting of breeze wind energy, delivering total rectified peak power densities of 2.07 and 1.94 W m^–3 for single and array devices, respectively. The applications of powering portable electronics reveal the huge prospects of hybrid nanogenerator in self-powered environmental monitoring toward forest/park fire warning systems.

中文翻译：

用于微风风能收集的摆动结构摩擦电-电磁杂化纳米发电机

风能是最有前途的可再生能源之一，但使用传统的电磁发电机（EMG）很难实现低频微风风能的收集。摩擦纳米发电机 (TENG) 为大规模收集分布式微风风能（通常为 3.4-5.4 ms ^-1）。在此，通过耦合 TENG 和 EMG，设计了一种具有改进性能和耐用性的摆动结构混合纳米发电机。介电刷和气隙设计可以最大限度地减少材料磨损并持续提供摩擦电荷。在外部触发下，系统比较了TENG和EMG的输出特性。在中等线圈匝数下，TENG 的整流峰值功率和平均功率分别比 EMG 高 60 倍和 635 倍，表明 TENG 在收集低频分布式能量（高熵能量）方面比 EMG 有效得多。此外，混合纳米发电机和阵列装置悬挂在树枝上以展示微风风能的有效收集，提供2.07和1.94 W m的总整流峰值功率密度^{–3 分别}用于单个和阵列设备。为便携式电子设备供电的应用揭示了混合纳米发电机在森林/公园火灾预警系统的自供电环境监测中的巨大前景。

更新日期：2021-07-08

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