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Ultrathin Noncontact-Mode Triboelectric Nanogenerator Triggered by Giant Dielectric Material Adaption

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    Ultrathin Noncontact-Mode Triboelectric Nanogenerator Triggered by Giant Dielectric Material Adaption
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    • Sang A Han
      Sang A Han
      School of Advanced Materials Science & Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
      Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Squires Way, North Wollongong, NSW 2500, Australia
      More by Sang A Han
    • Wanchul Seung
      Wanchul Seung
      School of Advanced Materials Science & Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
      More by Wanchul Seung
      Orcidhttp://orcid.org/0000-0002-7411-0865
    • Jung Ho Kim*
      Jung Ho Kim
      Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Squires Way, North Wollongong, NSW 2500, Australia
      *Email: [email protected]
      More by Jung Ho Kim
      Orcidhttp://orcid.org/0000-0003-4931-3553
    • Sang-Woo Kim*
      Sang-Woo Kim
      School of Advanced Materials Science & Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
      SKKU Advanced Institute of Nanotechnology (SAINT) and Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
      *Email: [email protected]
      More by Sang-Woo Kim
      Orcidhttp://orcid.org/0000-0002-0079-5806
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    ACS Energy Letters

    Cite this: ACS Energy Lett. 2021, 6, 4, 1189–1197
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    https://doi.org/10.1021/acsenergylett.0c02434
    Published March 12, 2021
    Copyright © 2021 American Chemical Society
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    Abstract

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    Noncontact-mode-operating triboelectric nanogenerators (TENGs), which directly avoid physical contact, are fascinating self-powered systems aimed at long-life operation and minimizing rubbing friction. As of now, there are still drawbacks such as the electrostatic discharge (ESD) phenomenon on the surface, which results in poor output. Herein, a noncontact TENG (nc-TENG) is designed by using calcium copper titanate (CaCu3Ti4O12) with a giant high permittivity, combined with self-assembled monolayers of 1H,1H,2H,2H-perfluorooctyltrichlorosilane. All the materials constituting the nc-TENG are nanoscale in thickness, and this enables the implementation of a wearable nc-TENG that can be attached to the human body. The ESD phenomenon is prevented by using an ultraflat surface roughness material as an abutting material. In addition, by using a giant dielectric constant material, the charge capability is further improved, and the nc-TENG can be implemented for stable operation with a low power reduction rate, even when operating for a long period of time.

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    • Experimental methods, including growth of graphene and hexagonal boron nitride (h-BN), synthesis of CCTO solution, and the FOTS treatment process; optical microscopy and Raman spectroscopy of graphene and h-BN; XRD results for the synthesized CCTO film; CCTO annealing temperature optimization; water contact angle measurements; surface potential measurements of charge injected FOTS-treated CCTO; dissipation time of the surface potential of FOTS-treated CCTO; nc-TENG device fabrication process; measurement system; surface roughness of graphene and Al tape; and output performance behavior, including Figures S1–S15 (PDF)

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    ACS Energy Letters

    Cite this: ACS Energy Lett. 2021, 6, 4, 1189–1197
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acsenergylett.0c02434
    Published March 12, 2021
    Copyright © 2021 American Chemical Society
    Request reuse permissions

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