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The Effect of a Magnetic Field on Solid–Liquid Contact Electrification for Streaming Flow Energy Harvesting

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  • Thanh Ha Nguyen

    (School of Mechanical Engineering, University of Ulsan, 93, Deahak-ro, Nam-gu, Ulsan 44610, Republic of Korea)

  • Kyoung Kwan Ahn

    (School of Mechanical Engineering, University of Ulsan, 93, Deahak-ro, Nam-gu, Ulsan 44610, Republic of Korea)

Abstract

In recent years, the triboelectric nanogenerator (TENG) has been recognized as a promising method for energy harvesting and self-powered devices. However, in order to improve the output efficiency of the TENG, it is necessary to change the types of dielectric materials, which requires advanced technology and a high cost to implement. To address this issue, we developed a parallel electrode magnetic-TENG (Mag-TENG) based on contact electrification of a liquid–solid interface under the effect of the magnetic field, which enhances the output performance of the TENG without having to develop the dielectric material. Our experimental results achieved a higher output of the TENG under the influence of a magnetic field when an increase of the magnetic field strength went from 0 to 360 mT, and the flow rate of unsteady seawater was variable from 390 to 690 mL/min. Specifically, compared to the without-magnetic field case, the output current increased by approximately 6.5 times and the output voltage by 2.7 times. These findings suggested that using a magnetic field to enhance the TENG’s efficiency has significant potential for energy harvesting from seawater and self-powered flow sensors.

Suggested Citation

  • Thanh Ha Nguyen & Kyoung Kwan Ahn, 2023. "The Effect of a Magnetic Field on Solid–Liquid Contact Electrification for Streaming Flow Energy Harvesting," Energies, MDPI, vol. 16(12), pages 1-11, June.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:12:p:4779-:d:1173633
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    References listed on IDEAS

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    1. Wanghuai Xu & Huanxi Zheng & Yuan Liu & Xiaofeng Zhou & Chao Zhang & Yuxin Song & Xu Deng & Michael Leung & Zhengbao Yang & Ronald X. Xu & Zhong Lin Wang & Xiao Cheng Zeng & Zuankai Wang, 2020. "A droplet-based electricity generator with high instantaneous power density," Nature, Nature, vol. 578(7795), pages 392-396, February.
    2. Haiyang Zou & Ying Zhang & Litong Guo & Peihong Wang & Xu He & Guozhang Dai & Haiwu Zheng & Chaoyu Chen & Aurelia Chi Wang & Cheng Xu & Zhong Lin Wang, 2019. "Quantifying the triboelectric series," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
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