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Spring-assisted hybrid triboelectric-electromagnetic nanogenerator for harvesting low-frequency vibration energy and creating self-powered security system

Abstract

With the rapid development of portable electronics, exploring sustainable power sources is becoming more and more urgent. Utilizing a nanogenerator to harvest ambient mechanical energy could be an effective approach to solve this challenge. In this work, a novel spring-assisted hybrid nanogenerator (HG) consisting of a triboelectric nanogenerator (TENG) and an electromagnetic generator (EMG) was developed for harvesting low-frequency vibration energy. The results show that TENG with PTFE surface nanostructure has better output performance than that without the nanostructure. The effect of operation frequency on the open-circuit voltage and short-circuit current of the TENG and EMG is systematically investigated. Under a 2 Hz operating frequency, the EMG and TENG are able to produce a peak power of about 57.6 mW with a resistive load of 2000 Ω and 1682 μW with a resistive load of 50 MΩ, respectively. The impedance matching between TENG and EMG can be realized by using transformer to reduce the impedance of TENG. The charging performance of the HG is much better than that of the individual EMG or TENG. The HG enabled us to develop a self-powered safety system and to power LEDs, and drive some electronic devices. The present work provides a superior solution to improve the output performance of HG for harvesting low-frequency vibration energy.

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Publication details

The article was received on 27 May 2018, accepted on 06 Jul 2018 and first published on 10 Jul 2018


Article type: Paper
DOI: 10.1039/C8NR04276D
Citation: Nanoscale, 2018, Accepted Manuscript
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    Spring-assisted hybrid triboelectric-electromagnetic nanogenerator for harvesting low-frequency vibration energy and creating self-powered security system

    W. Wang, J. Xu, H.W. Zheng, F. Chen, K. Jenkins, Y. Wu, H. Wang, W. Zhang and R. Yang, Nanoscale, 2018, Accepted Manuscript , DOI: 10.1039/C8NR04276D

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