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Electron tunneling of hierarchically structured silver nanosatellite particles for highly conductive healable nanocomposites

Author

Listed:
  • Daewoo Suh

    (Sungkyunkwan University
    Production Engineering Research Institute, LG Electronics)

  • K. P. Faseela

    (Sungkyunkwan University)

  • Wonjoon Kim

    (Sungkyunkwan University)

  • Chanyong Park

    (Sungkyunkwan University)

  • Jang Gyun Lim

    (Sungkyunkwan University)

  • Sungwon Seo

    (Sungkyunkwan University)

  • Moon Ki Kim

    (Sungkyunkwan University
    Sungkyunkwan University)

  • Hyungpil Moon

    (Sungkyunkwan University)

  • Seunghyun Baik

    (Sungkyunkwan University)

Abstract

Healable conductive materials have received considerable attention. However, their practical applications are impeded by low electrical conductivity and irreversible degradation after breaking/healing cycles. Here we report a highly conductive completely reversible electron tunneling-assisted percolation network of silver nanosatellite particles for putty-like moldable and healable nanocomposites. The densely and uniformly distributed silver nanosatellite particles with a bimodal size distribution are generated by the radical and reactive oxygen species-mediated vigorous etching and reduction reaction of silver flakes using tetrahydrofuran peroxide in a silicone rubber matrix. The close work function match between silicone and silver enables electron tunneling between nanosatellite particles, increasing electrical conductivity by ~5 orders of magnitude (1.02×103 Scm−1) without coalescence of fillers. This results in ~100% electrical healing efficiency after 1000 breaking/healing cycles and stability under water immersion and 6-month exposure to ambient air. The highly conductive moldable nanocomposite may find applications in improvising and healing electrical parts.

Suggested Citation

  • Daewoo Suh & K. P. Faseela & Wonjoon Kim & Chanyong Park & Jang Gyun Lim & Sungwon Seo & Moon Ki Kim & Hyungpil Moon & Seunghyun Baik, 2020. "Electron tunneling of hierarchically structured silver nanosatellite particles for highly conductive healable nanocomposites," Nature Communications, Nature, vol. 11(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-15709-8
    DOI: 10.1038/s41467-020-15709-8
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    Cited by:

    1. Ngoc Thanh Phuong Vo & Tae Uk Nam & Min Woo Jeong & Jun Su Kim & Kyu Ho Jung & Yeongjun Lee & Guorong Ma & Xiaodan Gu & Jeffrey B.-H. Tok & Tae Il Lee & Zhenan Bao & Jin Young Oh, 2024. "Autonomous self-healing supramolecular polymer transistors for skin electronics," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    2. Jinhong Park & Duhwan Seong & Yong Jun Park & Sang Hyeok Park & Hyunjin Jung & Yewon Kim & Hyoung Won Baac & Mikyung Shin & Seunghyun Lee & Minbaek Lee & Donghee Son, 2022. "Reversible electrical percolation in a stretchable and self-healable silver-gradient nanocomposite bilayer," Nature Communications, Nature, vol. 13(1), pages 1-13, December.

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