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A Dual-Module Triboelectric Nanogenerator With Ultrahigh Charging Efficiency for Broadband Vibration/Wind Harvesting
Jin Wu1, Xiao Chang1, Zixun Wang1
1School of Materials Science and Engineering, Anhui University, Hefei, Anhui, China.
Abstract:
To address the self-powering challenges of distributed sensors and effectively harness ambient multi-source high-entropy micro-energy on transmission lines, a Stockbridge damper-based dual-module triboelectric nanogenerator (SD-TENG) is presented that overcomes these hurdles by synergistically harvesting broadband vibration (11-20 Hz) and wind energy (start-up speed: 2.6 m s- 1). The vibration-TENG features laser-direct-written micro-bowl arrays on Cu electrodes, enhancing interfacial charge density and then boosting the output voltage by 20.9%. An optimized power management module (PMM) dramatically enhances the charging power, achieving 237-fold and 370-fold improvements for the vibration and wind modules, respectively, enabling ultrahigh charging efficiency. The SD-TENG not only harvests energy but also functions as a self-powered sensor for vibration frequency and wind speed. In an outdoor simulated transmission line environment, it successfully powers a wireless temperature-humidity sensing system for continuous environmental monitoring. The work provides an eco-friendly, self-powered solution for transmission line monitoring, demonstrating considerable potential for applications in smart grid maintenance and Internet of Things (IoT) environmental sensing.
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