Flag-type hybrid nanogenerator utilizing flapping wakes for consistent high performance over an ultra-broad wind speed range
Fluttering of regular flags and flapping of inverted flags in the wind serve as the foundational principles of flag-type nanogenerators (FNGs). However, FNGs relying on a single aerodynamic behavior exhibit significant power output only within a limited spectrum of wind speeds, posing a challenge to...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/173321 |
| _version_ | 1811687973239914496 |
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| author | Dong, Liwei Tang, Qian Zhao, Chaoyang Hu, Guobiao Qu, Shuai Liu, Zicheng Yang, Yaowen |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Dong, Liwei Tang, Qian Zhao, Chaoyang Hu, Guobiao Qu, Shuai Liu, Zicheng Yang, Yaowen |
| author_sort | Dong, Liwei |
| collection | NTU |
| description | Fluttering of regular flags and flapping of inverted flags in the wind serve as the foundational principles of flag-type nanogenerators (FNGs). However, FNGs relying on a single aerodynamic behavior exhibit significant power output only within a limited spectrum of wind speeds, posing a challenge to their robustness in scenarios with intensely fluctuating wind. In this paper, we propose a novel hybrid scheme aimed at harnessing the synergistic potential of two aerodynamic behaviors to enhance the performance of FNGs and broaden their operational wind speed ranges. A flag-type triboelectric-piezoelectric hybrid nanogenerator (FTPNG) is developed with the integration of flapping piezoelectric flags (PEFs) and a fluttering triboelectric flag (TEF). To overcome the limited operational wind speed range, flapping PEFs are configured in an array format, optimized through fluid-solid coupled simulations. The rear TEF leverages the fluttering motion of a polytetrafluoroethylene (PTFE) membrane, which intermittently contacts and separates from conductive textiles positioned on the inner surface of the baffles. A noteworthy feature is the innovative “back-to-back” design, which utilizes the flapping wakes generated by PEFs to intensify the fluttering of the PTFE membrane, resulting in a remarkable boost in power generation of up to 132 times and achieving a maximum peak power output of 5400 μW. The FTPNG offers consistent high performance, with an average output of exceeding 200 μW over an ultra-broad wind speed range of 4.7–14.6 m/s, while the complete operational range is 3.7–15 m/s. It also attains a considerable average power output of 850 μW at 7.8 m/s, marking a significant advancement compared to other FNGs. Finally, in demonstration tests, the FTPNG can light 252 LEDs and showcases the capabilities of PEF array and TEF to independently power a wireless sensor node (WSN), highlighting its significant potential for applications in the Internet of Things and various self-powered systems. |
| first_indexed | 2024-10-01T05:24:49Z |
| format | Journal Article |
| id | ntu-10356/173321 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:24:49Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1733212024-01-24T04:04:15Z Flag-type hybrid nanogenerator utilizing flapping wakes for consistent high performance over an ultra-broad wind speed range Dong, Liwei Tang, Qian Zhao, Chaoyang Hu, Guobiao Qu, Shuai Liu, Zicheng Yang, Yaowen School of Civil and Environmental Engineering Engineering::Civil engineering Wind Energy Harvesting Hybrid Nanogenerator Fluttering of regular flags and flapping of inverted flags in the wind serve as the foundational principles of flag-type nanogenerators (FNGs). However, FNGs relying on a single aerodynamic behavior exhibit significant power output only within a limited spectrum of wind speeds, posing a challenge to their robustness in scenarios with intensely fluctuating wind. In this paper, we propose a novel hybrid scheme aimed at harnessing the synergistic potential of two aerodynamic behaviors to enhance the performance of FNGs and broaden their operational wind speed ranges. A flag-type triboelectric-piezoelectric hybrid nanogenerator (FTPNG) is developed with the integration of flapping piezoelectric flags (PEFs) and a fluttering triboelectric flag (TEF). To overcome the limited operational wind speed range, flapping PEFs are configured in an array format, optimized through fluid-solid coupled simulations. The rear TEF leverages the fluttering motion of a polytetrafluoroethylene (PTFE) membrane, which intermittently contacts and separates from conductive textiles positioned on the inner surface of the baffles. A noteworthy feature is the innovative “back-to-back” design, which utilizes the flapping wakes generated by PEFs to intensify the fluttering of the PTFE membrane, resulting in a remarkable boost in power generation of up to 132 times and achieving a maximum peak power output of 5400 μW. The FTPNG offers consistent high performance, with an average output of exceeding 200 μW over an ultra-broad wind speed range of 4.7–14.6 m/s, while the complete operational range is 3.7–15 m/s. It also attains a considerable average power output of 850 μW at 7.8 m/s, marking a significant advancement compared to other FNGs. Finally, in demonstration tests, the FTPNG can light 252 LEDs and showcases the capabilities of PEF array and TEF to independently power a wireless sensor node (WSN), highlighting its significant potential for applications in the Internet of Things and various self-powered systems. Nanyang Technological University This work was mainly carried out by the first author during his visit to Nanyang Technological University, and sponsored by the China Scholarship Council (Grant No. 202206260157), and NTU grant 020671-00001. 2024-01-24T04:04:15Z 2024-01-24T04:04:15Z 2024 Journal Article Dong, L., Tang, Q., Zhao, C., Hu, G., Qu, S., Liu, Z. & Yang, Y. (2024). Flag-type hybrid nanogenerator utilizing flapping wakes for consistent high performance over an ultra-broad wind speed range. Nano Energy, 119, 109057-. https://dx.doi.org/10.1016/j.nanoen.2023.109057 2211-2855 https://hdl.handle.net/10356/173321 10.1016/j.nanoen.2023.109057 2-s2.0-85176504334 119 109057 en 020671-00001 Nano Energy © 2023 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Civil engineering Wind Energy Harvesting Hybrid Nanogenerator Dong, Liwei Tang, Qian Zhao, Chaoyang Hu, Guobiao Qu, Shuai Liu, Zicheng Yang, Yaowen Flag-type hybrid nanogenerator utilizing flapping wakes for consistent high performance over an ultra-broad wind speed range |
| title | Flag-type hybrid nanogenerator utilizing flapping wakes for consistent high performance over an ultra-broad wind speed range |
| title_full | Flag-type hybrid nanogenerator utilizing flapping wakes for consistent high performance over an ultra-broad wind speed range |
| title_fullStr | Flag-type hybrid nanogenerator utilizing flapping wakes for consistent high performance over an ultra-broad wind speed range |
| title_full_unstemmed | Flag-type hybrid nanogenerator utilizing flapping wakes for consistent high performance over an ultra-broad wind speed range |
| title_short | Flag-type hybrid nanogenerator utilizing flapping wakes for consistent high performance over an ultra-broad wind speed range |
| title_sort | flag type hybrid nanogenerator utilizing flapping wakes for consistent high performance over an ultra broad wind speed range |
| topic | Engineering::Civil engineering Wind Energy Harvesting Hybrid Nanogenerator |
| url | https://hdl.handle.net/10356/173321 |
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