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Rotating‐Disk‐Based Direct‐Current Triboelectric Nanogenerator
Author(s) -
Zhang Chi,
Zhou Tao,
Tang Wei,
Han Changbao,
Zhang Limin,
Wang Zhong Lin
Publication year - 2014
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201301798
Subject(s) - triboelectric effect , nanogenerator , materials science , alternating current , direct current , energy harvesting , current (fluid) , optoelectronics , electrode , rectifier (neural networks) , electrical engineering , rotational speed , mechanical energy , dc motor , electronics , energy (signal processing) , voltage , mechanical engineering , computer science , physics , composite material , power (physics) , engineering , piezoelectricity , stochastic neural network , quantum mechanics , machine learning , recurrent neural network , artificial neural network
An innovative design is reported of a direct‐current triboelectric nanogenerator (DC‐TENG) based on a rotating disk design for harvesting rotational mechanical energy. The DC‐TENG consists of two disks and two pairs of flexible electric brushes that are made of carbon fiber and contact two electrodes, respectively. During the rotation, two disks have distinct triboelectric polarities for a cyclic in‐plane charge separation between them and an alternating current is generated between the two electrodes. Because of the sliding contact and automatically switch between the electric brushes and the two electrodes, the current is reversed in the second half of the cycle and a direct current is generated. The role that the rotating speed and the segmentation number have is thoroughly investigated and shows that there is direct current enhancement not only at higher speed but also with more segments. The DC‐TENG has been demonstrated as a constant current source for directly and continuously driving electronic devices and/or charging an energy storage unit without a rectifier bridge. This work presents a novel DC‐TENG technology and opens up more potential applications for harvesting rotational mechanical energy and powering electronics.