Moisture-enabled self-charging and voltage stabilizing supercapacitor

Lifeng Wang; Haiyan Wang; Chunxiao Wu; Jiaxin Bai; Tiancheng He; Yan Li; Huhu Cheng; Liangti Qu

doi:10.1038/s41467-024-49393-9

Nature Communications (Jun 2024)

Moisture-enabled self-charging and voltage stabilizing supercapacitor

Lifeng Wang,
Haiyan Wang,
Chunxiao Wu,
Jiaxin Bai,
Tiancheng He,
Yan Li,
Huhu Cheng,
Liangti Qu

Affiliations

Lifeng Wang: School of Materials Science and Engineering, University of Science and Technology Beijing
Haiyan Wang: Key Laboratory of Organic Optoelectronics & Molecular Engineering, Ministry of Education, Department of Chemistry, Tsinghua University
Chunxiao Wu: School of Materials Science and Engineering, University of Science and Technology Beijing
Jiaxin Bai: State Key Laboratory of Tribology in Advanced Equipment (SKLT), Department of Mechanical Engineering, Tsinghua University
Tiancheng He: State Key Laboratory of Tribology in Advanced Equipment (SKLT), Department of Mechanical Engineering, Tsinghua University
Yan Li: School of Materials Science and Engineering, University of Science and Technology Beijing
Huhu Cheng: Key Laboratory of Organic Optoelectronics & Molecular Engineering, Ministry of Education, Department of Chemistry, Tsinghua University
Liangti Qu: Key Laboratory of Organic Optoelectronics & Molecular Engineering, Ministry of Education, Department of Chemistry, Tsinghua University

DOI: https://doi.org/10.1038/s41467-024-49393-9
Journal volume & issue: Vol. 15, no. 1
pp. 1 – 9

Abstract

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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.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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