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

Sang A. Han, Wanchul Seung, Jung Ho Kim, Sang Woo Kim

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Pages (from-to)1189-1197
Number of pages9
JournalACS Energy Letters
Issue number4
Publication statusPublished - 2021 Apr 9

Bibliographical note

Publisher Copyright:
© 2021 American Chemical Society.

All Science Journal Classification (ASJC) codes

  • Chemistry (miscellaneous)
  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Materials Chemistry


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