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Moisture-enabled self-charging and voltage stabilizing supercapacitor

Author

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  • Lifeng Wang

    (University of Science and Technology Beijing
    Tsinghua University
    Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences
    Tsinghua University)

  • Haiyan Wang

    (Tsinghua University)

  • Chunxiao Wu

    (University of Science and Technology Beijing
    Tsinghua University)

  • Jiaxin Bai

    (Tsinghua University)

  • Tiancheng He

    (Tsinghua University)

  • Yan Li

    (University of Science and Technology Beijing)

  • Huhu Cheng

    (Tsinghua University
    Tsinghua University
    Tsinghua University)

  • Liangti Qu

    (Tsinghua University
    Tsinghua University
    Tsinghua University)

Abstract

Supercapacitor is highly demanded in emerging portable electronics, however, which faces frequent charging and inevitable rapid self-discharging of huge inconvenient. Here, we present a flexible moisture-powered supercapacitor (mp-SC) that capable of spontaneously moisture-enabled self-charging and persistently voltage stabilizing. Based on the synergy effect of moisture-induced ions diffusion of inner polyelectrolyte-based moist-electric generator and charges storage ability of inner graphene electrochemical capacitor, this mp-SC demonstrates the self-charged high areal capacitance of 138.3 mF cm−2 and ~96.6% voltage maintenance for 120 h. In addition, a large-scale flexible device of 72 mp-SC units connected in series achieves a self-charged 60 V voltage in air, efficiently powering various commercial electronics in practical applications. This work will provide insight into the design self-powered and ultra-long term stable supercapacitors and other energy storage devices.

Suggested Citation

  • Lifeng Wang & Haiyan Wang & Chunxiao Wu & Jiaxin Bai & Tiancheng He & Yan Li & Huhu Cheng & Liangti Qu, 2024. "Moisture-enabled self-charging and voltage stabilizing supercapacitor," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-49393-9
    DOI: 10.1038/s41467-024-49393-9
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    References listed on IDEAS

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