A Water-Proof Triboelectric-Electromagnetic Hybrid Generator for Energy Harvesting in Harsh Environments
A Water-Proof Triboelectric-Electromagnetic Hybrid Generator for Energy Harvesting in Harsh Environments
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DOI：
10.1002/aenm.201501593
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发表时间：
2016-03-23
影响因子：
27.8
通讯作者：
Wang, Zhong Lin
中科院分区：
文献类型：
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作者：
Guo, Hengyu;Wen, Zhen;Wang, Zhong Lin
封装是摩擦电纳米发电机（TENG）走向实际应用的一个关键方面，因为TENG的性能受环境条件（如湿度）的影响很大。介绍了一种用于恶劣环境下机械能采集的防水摩擦电-电磁混合发电机。由于从外部机械源到TENG的机械传输是通过成对磁体之间的非接触力进行的，因此可以容易地实现TENG部件的完全隔离包装。同时，结合金属线圈，这些磁铁可以制成电磁发电机（EMG）。系统地研究并比较了TENG和EMG输出的特点和优势。通过使用变压器和全波整流器，WPHG在1600 rpm的转速下获得2.3 mA的总短路电流和5 V的开路电压，并且它可以在22 s内将超级电容器（20 mF）充电到1 V。最后，WPHG被证明收获风能在下雨的条件下和水流能量在水中。报告的WPHG为恶劣环境中的环境机械能收集提供了一种有效且可持续的技术。坚实的进展，在包装的TENG和实际应用的混合发电机向实际电源和自供电系统。
Packaging is a critical aspect of triboelectric nanogenerators (TENG) toward practical applications, since the performance of TENG is greatly affected by environmental conditions such as humidity. A waterproof triboelectric-electromagnetic hybrid generator (WPHG) for harvesting mechanical energy in harsh environments is reported. Since the mechanical transmission from the external mechanical source to the TENG is through a noncontact force between the paired magnets, a fully isolated packaging of TENG part can be easily achieved. At the same time, combining with metal coils, these magnets can be fabricated to be electromagnetic generators (EMG). The characteristics and advantages of outputs from both TENG and EMG are systematically studied and compared to each other. By using transformers and full-wave rectifiers, 2.3 mA for total short-circuit current and 5 V for open-circuit voltage are obtained for WPHG under a rotation speed of 1600 rpm, and it can charge a supercapacitor (20 mF) to 1 V in 22s. Finally, the WPHG is demonstrated to harvest wind energy in the rainy condition and water-flow energy under water. The reported WPHG renders an effective and sustainable technology for ambient mechanical energy harvesting in harsh environments. Solid progress in both the packaging of TENG and the practical applications of the hybrid generator toward practical power source and self-powered systems is presented.