News & Meida

Significant research has been conducted to find practical methods to increase the triboelectric charge density of friction surfaces and improve the TENG output performance. In this study, a double-layer nanofibrous-TENG is newly proposed, consisting of MXene/P(VDF-TrFE) as a charge-generating layer and Siloxene/cobalt-nanoporous carbon/P(VDF-TrFE) as a charge-trapping layer, fabricated via a facile electrospinning process. The charge-generating layer generates abundant surface charges owing to the high electronegativity and electron affinity of MXene. Similarly, Siloxene as a filler in the charge-trapping layer improves the dielectric property of the layer, whereas hierarchically porous structure with a large surface area of cobalt nanoporous carbon provides more active sites for charge storage. After utilizing the charge-trapping layer, the current density and surface potential of the double-layer nanofibrous TENG is two-fold higher than the single-layer nanofibrous TENG. Furthermore, the TENG with Nylon 6/6 nanofiber as a positive friction layer, delivers a power density of 19 W m^-2_, which shows superior output performance compared to the state-of-the-art works. Finally, the fabricated device is attached to the shoe insole, and the triboelectric sensor data is analyzed using cutting-edge deep learning technology, which exhibited an accuracy of 99% in user identification and user activity recognition. Thus, this study investigates the possibilities of using the electrospun double-layer nanofibrous mat to boost the TENG output performance and explores its applications in artificial intelligence and human activity recognition systems.

Web Link:

https://doi.org/10.1016/j.nanoen.2023.108180

University Link:

https://www.kw.ac.kr/ko/life/research.jsp?BoardMode=view&DUID=43299

News Link:

http://www.veritas-a.com/news/articleView.html?idxno=465857

https://news.unn.net/news/articleView.html?idxno=550229

https://www.joongang.co.kr/article/25178921#home

https://news.mt.co.kr/mtview.php?no=2023072015040456699

https://www.kyosu.net/news/articleList.html?sc_area=A&sc_word=%EC%8A%A4%EB%A7%88%ED%8A%B8%EA%B9%94%EC%B0%BD