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Title	Alternating Magnetic Field-Enhanced Triboelectric Nanogenerator For Low-Speed Flow Energy Harvesting
ID_Doc	7269
Authors	Zhang B.; Gao Q.; Li W.; Zhu M.; Li H.; Cheng T.; Wang Z.L.
Year	2023
Published	Advanced Functional Materials, 33, 42
DOI	http://dx.doi.org/10.1002/adfm.202304839
Abstract	Low-speed flow energy, such as breezes and rivers, which are abundant in smart agriculture and smart cities, faces significant challenges in efficient harvesting as an untapped sustainable energy source. This study proposes an alternating magnetic field-enhanced triboelectric nanogenerator (AMF-TENG) for low-speed flow energy harvesting, and demonstrates its feasibility through experimental results. AMF-TENG's minimum cut-in speed is 1 m s−1, thereby greatly expanding its wind energy harvesting range. When the wind speed is 1–5 m s−1, the open-circuit voltage (VOC) is 20.9–179.3 V. The peak power is 0.68 mW at 5 m s−1. In a durability test of 100 K cycles, the VOC decreases from 188.4 to 174.2 V but remain at 92.5% of the initial value. furthermore, the AMF-TENG can harvest low-speed flow energy from the natural environment to power temperature and humidity sensors and wireless light intensity sensor in smart agriculture. This study provides a promising method for low-speed flow energy harvesting in distributed applications. © 2023 Wiley-VCH GmbH.
Author Keywords	alternating magnetic field; low-speed flow energy; self-powered; smart agriculture; triboelectric nanogenerators

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