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Title: A two-degree-of-freedom cantilever-based vibration triboelectric nanogenerator for low-frequency and broadband operation
Authors: Tang, G.
Cheng, F.
Hu, X.
Huang, B.
Xu, B.
Li, Z.
Yan, X.
Yuan, D.
Wu, W.
Shi, Q. 
Keywords: Broadband
Triboelectric nanogenerator
Issue Date: 2019
Publisher: MDPI AG
Citation: Tang, G., Cheng, F., Hu, X., Huang, B., Xu, B., Li, Z., Yan, X., Yuan, D., Wu, W., Shi, Q. (2019). A two-degree-of-freedom cantilever-based vibration triboelectric nanogenerator for low-frequency and broadband operation. Electronics (Switzerland) 8 (12) : 1526. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: With the continual increasing application requirements of broadband vibration energy harvesters (VEHs), many attempts have been made to broaden the bandwidth. As compared to adopted only a single approach, integration of multi-approaches can further widen the operating bandwidth. Here, a novel two-degree-of-freedom cantilever-based vibration triboelectric nanogenerator is proposed to obtain high operating bandwidth by integrating multimodal harvesting technique and inherent nonlinearity broadening behavior due to vibration contact between triboelectric surfaces. A wide operating bandwidth of 32.9 Hz is observed even at a low acceleration of 0.6 g. Meanwhile, the peak output voltage is 18.8 V at the primary resonant frequency of 23 Hz and 1 g, while the output voltage is 14.9 V at the secondary frequency of 75 Hz and 2.5 g. Under the frequencies of these two modes at 1 g, maximum peak power of 43.08 ?W and 12.5 ?W are achieved, respectively. Additionally, the fabricated device shows good stability, reaching and maintaining its voltage at 8 V when tested on a vacuum compression pump. The experimental results demonstrate the device has the ability to harvest energy from a wide range of low-frequency (<100 Hz) vibrations and has broad application prospects in self-powered electronic devices and systems. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
Source Title: Electronics (Switzerland)
ISSN: 20799292
DOI: 10.3390/electronics8121526
Rights: Attribution 4.0 International
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