Moisture Resistant and Stable Wireless Wind Speed Sensing System Based on Triboelectric Nanogenerator with Charge‐Excitation Strategy. (25th August 2022)

• Record Type: Journal Article
• Authors: Yu, Xinke; Fu, Shaoke; Zuo, Xiuli; Zeng, Jie; Shan, Chuncai; He, Wencong; Li, Wenpo; Hu, Chenguo
• Is Part Of: Advanced functional materials. Volume 32:Number 44(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-08-25
• Subjects: charge excitation -- intelligent sensing -- moisture resistance -- triboelectric nanogenerators -- wind energy; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.202207498
• Languages: English
• ISSNs: 1616-301X

Abstract

Abstract: Wind energy harvesting from the ambient environment by triboelectric nanogenerator (TENG) is highly important for powering wireless sensing systems. However, the output of TENG is greatly affected by ambient humidity, which seriously limits the measurement accuracy and stability of sensors. Herein, a flutter‐driven TENG composed of an Al foil interlayer sealed by FEP membranes (FEP/Al/FEP) is proposed to isolate Al foil from the external environment. A self‐charge excitation circuit is used to inject charges into the Al foil interlayer to achieve high charge density on it, greatly reducing the dependence on triboelectrification. In addition, an elastic steel sheet connected to a fluttering membrane at the fixed end is designed to get high stability of vibration. Consequently, the interference of humidity and other external environmental factors of this new type of elastic‐assisted TENG (EA‐TENG) with self‐charge excitation is greatly reduced and the output performance is greatly enhanced compared with traditional flutter‐driven TENGs. To demonstrate a practical application, a wind speed monitoring and alarming system are designed, which realizes real‐time wind speed detection and wind speed threshold alarm. The moisture‐resistant and stable wireless wind speed sensing system in this study has great applications in building large‐scale sensor networks. Abstract : A self‐charge excitation and elastic‐assisted triboelectric nanogenerator (TENG) is proposed, which has excellent stability and anti‐interference ability. This work provides a new strategy for improving the stability and moisture resistance of TENG, which shows a potential application prospect in the wireless environmental monitoring network.