文章基本信息

标题：Comparison of applied torque and energy conversion efficiency between rotational triboelectric nanogenerator and electromagnetic generator
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作者：Shaohang Xu ; Xianpeng Fu ; Guoxu Liu 等
期刊名称：iScience
印刷版ISSN：2589-0042
出版年度：2021
卷号：24
期号：4
页码：1-22
DOI：10.1016/j.isci.2021.102318
语种：English
出版社：Elsevier
摘要：SummaryTriboelectric nanogenerator (TENG) is regarded as an equally important mechanical energy harvesting technology as electromagnetic generator (EMG). Here, the input mechanical torques and energy conversion efficiencies of the rotating EMG and TENG are systematically measured, respectively. At constant rotation rates, the input mechanical torque of EMG is balanced by the friction resisting torque and electromagnetic resisting torque, which increases with the increasing rotation rate due to Ampere force. While the input mechanical torque of TENG is balanced by the friction resisting torque and electrostatic resisting torque, which is nearly constant at different rotation rates. The energy conversion efficiency of EMG increases with the increasing input mechanical power, while that of the TENG remains nearly constant. Compared with the EMG, the TENG has a higher conversion efficiency at a low input mechanical power, which demonstrates a remarkable merit of the TENG for efficiently harvesting weak ambient mechanical energy.Graphical abstractDisplay OmittedHighlights•The applied torque of the rotating EMG and TENG are systematically measured•The energy conversion efficiencies of both generators are quantified and compared•This work has demonstrated a remarkable merit of the TENG under a gentle-triggeringElectromagnetic Field; Energy Resources; Energy Systems; Nanostructure