Nature Communications | VOL. 5
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Flutter-driven triboelectrification for harvesting wind energy

Publication Date Sep 23, 2014

Abstract

Technologies to harvest electrical energy from wind have vast potentials because wind is one of the cleanest and most sustainable energy sources that nature provides. Here we propose a flutter-driven triboelectric generator that uses contact electrification caused by the self-sustained oscillation of flags. We study the coupled interaction between a fluttering flexible flag and a rigid plate. In doing so, we find three distinct contact modes: single, double and chaotic. The flutter-driven triboelectric generator having small dimensions of 7.5 × 5 cm at wind speed of 15 ms(-1) exhibits high-electrical performances: an instantaneous output voltage of 200 V and a current of 60 μA with a high frequency of 158 Hz, giving an average power density of approximately 0.86 mW. The flutter-driven triboelectric generation is a promising technology to drive electric devices in the outdoor environments in a sustainable manner.

Concepts
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Sustainable Energy Sources
Contact Electrification
Rigid Plate
Outdoor Environments
Sustainable Manner
Instantaneous Voltage
Sustainable Sources
Distinct Modes
Average Density
Instantaneous Output Voltage

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