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성균관대학교

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Nano Energy, Volume 96, 1 June 2022, 107091 | https://doi.org/10.1016/j.nanoen.2022.107091 Biocompatible and mechanically-reinforced tribopositive nanofiber mat for wearable and antifungal human kinetic-energy harvester based on wood-derived natural product

Dogun Park ^a,1, Joo-Hyun Hong ^b,1, Daekyu Choi ^a, Donghyeun Kim ^c, Won Hee Jung ^c, Sam S. Yoon ^d,*, Ki Hyun Kim ^b,*, Seongpil An ^a,e,*

^a SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea ^b School of Pharmacy, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea ^c Department of Systems Biotechnology, Chung-Ang University, Anseong 17546, Republic of Korea ^d School of Mechanical Engineering, Korea University, Seoul 02841, Republic of Korea ^e Department of Nano Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea

^* Corresponding authors.
¹ D. Park and J.H. Hong contributed equally to this work.

Abstract

Developing sustainable and environmentally friendly energy harvester is of great interest for various applications, especially for wearable and body-attachable self-powered electronics. Here, a biocompatible, mechanically durable, and sustainable wood-derived triboelectric nanogenerator (wood-TENG) is fabricated and applied as a human kinetic-energy harvester, along with an antifungal activity against athlete's foot. The wood-TENG is composed of the wood-derived natural product, i.e., the root bark of Ulmus davidiana var. japonica and the biocompatible polymer, i.e., polycaprolactone (PCL). The incorporation of U. davidiana var. japonica in nonwoven PCL nanofiber (NF) mat not only enhances the mechanical properties of the wood-TENG, but also increases the surface energy of the NF mat, resulting in the highest energy harvesting efficiency as compared to those of other bio-TENGs. Various physicochemical characterizations, including Fourier transform infrared (FTIR), Kelvin probe force microscopy (KPFM), etc., are conducted to explore the tribopositivity of the NF mat. Thanks to the enhanced triboelectricity, our wood-TENG can generate a maximum output voltage of 80 V and show stable cyclic energy harvesting performance during 100,000 cycles.

논문정보

형식Research article
게재일2022년 06월 (BRIC 등록일 2022-07-20)
연구진국내 연구진
분야 바이오·의료융합 > 바이오소재

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