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Vertical iontronic energy storage based on osmotic effects and electrode redox reactions

Author

Listed:
  • Feiyao Yang

    (Chinese Academy of Sciences)

  • Puguang Peng

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

  • Zhao-Yi Yan

    (Tsinghua University)

  • Hongzhao Fan

    (The Hong Kong University of Science and Technology)

  • Xiang Li

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

  • Shaoxin Li

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

  • Houfang Liu

    (Tsinghua University)

  • Tian-Ling Ren

    (Tsinghua University)

  • Yanguang Zhou

    (The Hong Kong University of Science and Technology)

  • Zhong Lin Wang

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

  • Di Wei

    (Chinese Academy of Sciences)

Abstract

Making salinity gradient energy practical is a great challenge. Despite recent advancements, the practicality of osmotic energy for portable electronics remains doubtful due to its limited power output and portability constraints. Here we report a method for optimizing the transport of alkali metal ions within two-dimensional nanofluidic channels and coupling it with tailored interfacial redox reactions to store the osmotic energy in a space of tens of micrometres within the cut edge of a polymer film. An ultrahigh output power density of 15,900 W m−2 has been achieved. By connecting the devices in series, commercial electronics can be powered due to the high volumetric specific energy density (9.46 Wh cm−3) and power density (106.33 W cm−3). This work introduces an approach for storing iontronic energy based on osmotic effects, providing a platform for developing renewable, ultrathin and safe power sources.

Suggested Citation

  • Feiyao Yang & Puguang Peng & Zhao-Yi Yan & Hongzhao Fan & Xiang Li & Shaoxin Li & Houfang Liu & Tian-Ling Ren & Yanguang Zhou & Zhong Lin Wang & Di Wei, 2024. "Vertical iontronic energy storage based on osmotic effects and electrode redox reactions," Nature Energy, Nature, vol. 9(3), pages 263-271, March.
    • Handle: RePEc:nat:natene:v:9:y:2024:i:3:d:10.1038_s41560-023-01431-4
    DOI: 10.1038/s41560-023-01431-4
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