Sustainable highly charged C60-functionalized polyimide in a non-contact mode triboelectric nanogenerator

Jae Won Lee, Sungwoo Jung, Jinhyeong Jo, Gi Hyeon Han, Dong Min Lee, Jiyeon Oh, Hee Jae Hwang, Dukhyun Choi, Sang Woo Kim, Jun Hee Lee, Changduk Yang, Jeong Min Baik

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)

Abstract

In this paper, we report on a new dielectric, a C60-containing block polyimide (PI-b-C60). This was realized by introducing C60 as pendent groups into a polymer backbone. When this dielectric was used in a non-contact mode triboelectric nanogenerator (TENG), it achieved high output power and reliable operation. Compared with perfluoroalkoxy alkane film-based TENGs, the TENG based on PI-b-C60 generated 4.3 times higher output power and a superior charge density of over 300 μC m-2 with a 3 times slower charge decay rate. These results are most likely due to the excellent charge-retention characteristics induced by the most negative electrostatic potential of C60 within the backbone, and these characteristics were confirmed by surface potential measurements. Furthermore, in the course of our work, two non-contact mode applications, a keyless electronic door lock system and a speed sensor with a tone wheel for a car, were developed. Without an ion injection process being needed, very sensitive and reliable operations of the speed sensor were successfully demonstrated, even under very humid conditions (∼99% RH).

Original languageEnglish
Pages (from-to)1004-1015
Number of pages12
JournalEnergy and Environmental Science
Volume14
Issue number2
DOIs
Publication statusPublished - 2021 Feb

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry.

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Pollution

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