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Yang, Changduk
Advanced Tech-Optoelectronic Materials Synthesis Lab (ATOMS)
Research Interests
  • Optoelectronic materials synthesis/organic electronics, functionalization of carbonaceous solids, advanced materials chemistry, macromolecular chemistry

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Sustainable highly charged C-60-functionalized polyimide in a non-contact mode triboelectric nanogenerator

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Title
Sustainable highly charged C-60-functionalized polyimide in a non-contact mode triboelectric nanogenerator
Author
Lee, Jae WonJung, SungwooJo, JinhyeongHan, Gi HyeonLee, Dong-MinOh, JiyeonHwang, Hee JaeChoi, DukhyunKim, Sang-WooLee, Jun HeeYang, ChangdukBaik, Jeong Min
Issue Date
2021-02
Publisher
ROYAL SOC CHEMISTRY
Citation
ENERGY & ENVIRONMENTAL SCIENCE, v.14, no.2, pp.1004 - 1015
Abstract
In this paper, we report on a new dielectric, a C-60-containing block polyimide (PI-b-C-60). This was realized by introducing C-60 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-C-60 generated 4.3 times higher output power and a superior charge density of over 300 mu C 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 C-60 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 (similar to 99% RH).
URI
https://scholarworks.unist.ac.kr/handle/201301/52552
URL
https://pubs.rsc.org/en/content/articlelanding/2021/EE/D0EE03057K#!divAbstract
DOI
10.1039/d0ee03057k
ISSN
1754-5692
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