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Selectively tuning ionic thermopower in all-solid-state flexible polymer composites for thermal sensing

Author

Listed:
  • Cheng Chi

    (Tsinghua University)

  • Meng An

    (Tsinghua University
    Shaanxi University of Science and Technology)

  • Xin Qi

    (Tsinghua University)

  • Yang Li

    (The Hong Kong University of Science and Technology, Clear Water Bay)

  • Ruihan Zhang

    (Worcester Polytechnic Institute)

  • Gongze Liu

    (The Hong Kong University of Science and Technology, Clear Water Bay)

  • Chongjia Lin

    (The Hong Kong University of Science and Technology, Clear Water Bay)

  • He Huang

    (The Hong Kong University of Science and Technology, Clear Water Bay)

  • Hao Dang

    (Tsinghua University)

  • Baris Demir

    (The University of Queensland)

  • Yan Wang

    (Worcester Polytechnic Institute)

  • Weigang Ma

    (Tsinghua University)

  • Baoling Huang

    (The Hong Kong University of Science and Technology, Clear Water Bay)

  • Xing Zhang

    (Tsinghua University)

Abstract

There has been increasing interest in the emerging ionic thermoelectric materials with huge ionic thermopower. However, it’s challenging to selectively tune the thermopower of all-solid-state polymer materials because the transportation of ions in all-solid-state polymers is much more complex than those of liquid-dominated gels. Herein, this work provides all-solid-state polymer materials with a wide tunable thermopower range (+20~−6 mV K−1), which is different from previously reported gels. Moreover, the mechanism of p-n conversion in all-solid-state ionic thermoelectric polymer material at the atomic scale was presented based on the analysis of Eastman entropy changes by molecular dynamics simulation, which provides a general strategy for tuning ionic thermopower and is beneficial to understand the fundamental mechanism of the p-n conversion. Furthermore, a self-powered ionic thermoelectric thermal sensor fabricated by the developed p- and n-type polymers demonstrated high sensitivity and durability, extending the application of ionic thermoelectric materials.

Suggested Citation

  • Cheng Chi & Meng An & Xin Qi & Yang Li & Ruihan Zhang & Gongze Liu & Chongjia Lin & He Huang & Hao Dang & Baris Demir & Yan Wang & Weigang Ma & Baoling Huang & Xing Zhang, 2022. "Selectively tuning ionic thermopower in all-solid-state flexible polymer composites for thermal sensing," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-021-27885-2
    DOI: 10.1038/s41467-021-27885-2
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    Cited by:

    1. Song, Dongxing & Li, Lu & Huang, Ce & Wang, Ke, 2023. "Synergy between ionic thermoelectric conversion and nanofluidic reverse electrodialysis for high power density generation," Applied Energy, Elsevier, vol. 334(C).

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