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Spontaneously established reverse electric field to enhance the performance of triboelectric nanogenerators via improving Coulombic efficiency

Author

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  • Yikui Gao

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Lixia He

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Di Liu

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Jiayue Zhang

    (Tsinghua University)

  • Linglin Zhou

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Zhong Lin Wang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    Georgia Institute of Technology
    Yonsei University)

  • Jie Wang

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

Abstract

Mechanical energy harvesting using triboelectric nanogenerators is a highly desirable and sustainable method for the reliable power supply of widely distributed electronics in the new era; however, its practical viability is seriously challenged by the limited performance because of the inevitable side-discharge and low Coulombic-efficiency issues arising from electrostatic breakdown. Here, we report an important progress on these fundamental problems that the spontaneously established reverse electric field between the electrode and triboelectric layer can restrict the side-discharge problem in triboelectric nanogenerators. The demonstration employed by direct-current triboelectric nanogenerators leads to a high Coulombic efficiency (increased from 28.2% to 94.8%) and substantial enhancement of output power. More importantly, we demonstrate this strategy is universal for other mode triboelectric nanogenerators, and a record-high average power density of 6.15 W m−2 Hz−1 is realized. Furthermore, Coulombic efficiency is verified as a new figure-of-merit to quantitatively evaluate the practical performance of triboelectric nanogenerators.

Suggested Citation

  • Yikui Gao & Lixia He & Di Liu & Jiayue Zhang & Linglin Zhou & Zhong Lin Wang & Jie Wang, 2024. "Spontaneously established reverse electric field to enhance the performance of triboelectric nanogenerators via improving Coulombic efficiency," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-48456-1
    DOI: 10.1038/s41467-024-48456-1
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    References listed on IDEAS

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