Ultrahigh Electricity Generation from Low-Frequency Mechanical Energy by Efficient Energy Management
By Zhao Wang, Wenlin Liu, Wencong He, Hengyu Guo, Li Long, Y. Xi, Xue Wang, Anping Liu, Chenguo Hu. 2021
226 citations recorded by the source corpus.
Summary An efficient energy-management strategy is critical for the energy utilization of triboelectric nanogenerators (TENGs), of which the switch and convertor are two key parts. However, common switches only withstand limited voltage (∼102 V), while the convertors for electrostatic energy are diversely designed without standard principles. Here, we report a simple, tunable auto-spark switch to achieve energy accumulation and fast release and develop a standard design procedure of matched transformer for electrostatic energy conversion. We establish an ultrahigh voltage (over 7.5 kV) energy-management system for TENG. Ultrahigh output charge of 660 μ C per cycle, pulsed power density of 11.13 kW m−2, and constant power density of 291 mW m−2 at 3 Hz are all achieved. With this energy-management unit, TENGs can continuously power a wireless sensors network at 1 Hz. This energy-management approach enables TENGs to present a breakthrough in practical applications.
Subfields: Biomedical Engineering, Mechanical Engineering, Polymers and Plastics
View Paper: https://www.semanticscholar.org/paper/9b0f1801808109d99d0b6db22a8a1a09682492eb
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In Biomedical Engineering
In Mechanical Engineering
In Polymers and Plastics
Citations in the corpus
- Promoting smart cities into the 5G era with multi-field Internet of Things (IoT) applications powered with advanced mechanical energy harvesters (2021, background): “Additionally, with structure design like switches [91,92], charge pumping [93 – 95], and hybridized nanogenerators [17,96 – 99], the outputs also can be maximized and managed.”