An eccentric-structured hybrid triboelectric-electromagnetic nanogenerator for low-frequency mechanical energy harvesting

Qu, Zhigang; Wang, Xiaopeng; Huang, M.C.Y.; Chen, Chuanxian; An, Yang; Yin, Wuliang; Li, Xingfei

doi:10.1016/j.nanoen.2022.108094

Cited by 16 publications

(2 citation statements)

References 58 publications

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“…TENGs have the capacity to harvest mechanical energy from a range of environmental sources, including vibrations, wind, water movement, and human motion. 33 They can generate electricity in locations with few or no traditional power sources. Fig.…”

Section: Applications Of Teng Devicesmentioning

confidence: 99%

Applications of multifunctional triboelectric nanogenerator (TENG) devices: materials and prospects

Yadav

Sahay

Verma

et al. 2023

Sustainable Energy Fuels

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Section: Applications Of Teng Devicesmentioning

confidence: 99%

Applications of multifunctional triboelectric nanogenerator (TENG) devices: materials and prospects

Yadav

Sahay

Verma

et al. 2023

Sustainable Energy Fuels

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show abstract

“…However, due to the high-voltage and low-current characteristics of the TENG, resulting in a low output power that cannot meet the high-power electronic devices requirements, hybrid generators have become a new trend. [24][25][26][27][28][29][30][31] Dan et al [32] developed a portable hand-driven whirligig structured triboelectric-electromagnetic hybrid nanogenerator that combined a TENG with an electromagnetic generator (EMG) for efficient energy and multistrategy harvesting. In addition, Gai et al [33] designed a fitness gyroscope nanogenerator with a frequency conversion device that converted low-frequency wrist movements into high-frequency rotations, enabling the utilization of low-frequency mechanical energy.…”

Section: Introductionmentioning

confidence: 99%

Triboelectric–Electromagnetic Hybrid Energy Nanogenerator with Variable‐Frequency Effect Inspired by Magnetic Gears for Efficient Use of Low‐Speed Flow Energy

Xie,

Qin,

Wang

et al. 2024

Energy Tech

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In the macrocontext of a low‐carbon and energy‐efficient economy, the rise of new energy vehicles is expected to replace traditional fuel vehicles. However, with the increasing number of new energy vehicles, the source of electricity for charging facilities faces new challenges. This study proposes a triboelectric–electromagnetic energy hybrid nanogenerator (VF‐TEMG) with a variable‐frequency effect inspired by an axial magnetic gear. The unit consists of one triboelectric nanogenerator (TENG) unit and two electromagnetic generator (EMG) units. The TENG unit employs a ternary dielectric structure to achieve kilovoltage output and reduce torque. Moreover, charging efficiency is enhanced using a mixture of high voltage from the TENG and EMG high current. Using the magnetic field modulation principle, the magnetic poles, which are produced by the low‐speed rotor permanent magnets, are modulated by a pole‐modulating piece into a magnetic pole harmonic equal to the number of pairs of high‐speed rotor permanent magnets. Consequently, when the low‐speed rotor starts to rotate, it drives the high‐speed rotor to rotate at high speed, thereby achieving variable‐frequency motion. This work establishes the theoretical and experimental basis for harvesting and effectively utilizing green energy based on frequency conversion.

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A Self‐Powered Dual Ratchet Angle Sensing System for Digital Twins and Smart Healthcare

Liu,

Gu,

Yang

et al. 2024

Adv Funct Materials

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In the swiftly progressing landscape of wearable electronics and the Internet of Things (IoTs), there is a burgeoning demand for devices that are lightweight, cost‐effective, and self‐powered. In this study, a self‐powered bidirectional knee joint motion monitoring system is introduced, leveraging a dual ratchet sensing (DRS) system fabricated using 3D printing technology. This approach offers substantial economic and portability benefits. The DRS system is engineered to harness the negative work generated from knee joint movements to power commercial electronic devices, obviating the need for additional metabolic energy from the human body. By synergizing the DRS with virtual reality technology, it becomes feasible to monitor knee joint movements in real‐time with remarkable accuracy, presenting a novel avenue for the integration of digital twin technology. Through the amalgamation of convolutional neural network machine learning algorithms with Bayesian optimization techniques, the DRS system can discern up to 97% of knee joint movements, paving the way for innovative applications in smart rehabilitation and healthcare.

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An eccentric-structured hybrid triboelectric-electromagnetic nanogenerator for low-frequency mechanical energy harvesting

Cited by 16 publications

References 58 publications

Applications of multifunctional triboelectric nanogenerator (TENG) devices: materials and prospects

Applications of multifunctional triboelectric nanogenerator (TENG) devices: materials and prospects

Triboelectric–Electromagnetic Hybrid Energy Nanogenerator with Variable‐Frequency Effect Inspired by Magnetic Gears for Efficient Use of Low‐Speed Flow Energy

A Self‐Powered Dual Ratchet Angle Sensing System for Digital Twins and Smart Healthcare

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