Flexible Sandwich-Structured Foldable Triboelectric Nanogenerator Based on Paper Substrate for Eco-Friendly Electronic Devices

Da Eun Kim, Jiwon Park and Youn Tae Kim ()
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Da Eun Kim: AI Healthcare Research Center, Department of IT Fusion Technology, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju 61452, Korea
Jiwon Park: AI Healthcare Research Center, Department of IT Fusion Technology, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju 61452, Korea
Youn Tae Kim: AI Healthcare Research Center, Department of IT Fusion Technology, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju 61452, Korea

Energies, 2022, vol. 15, issue 17, 1-9

Abstract: Recently, as the use of wearable devices and the demand for eco-friendly energy have increased, many studies have been conducted on triboelectric nanogenerators (TENGs), which can economically harvest energy. Paper is considered a promising substrate and frame material that can be used to manufacture self-powered TENGs, owing to its flexibility, low cost, and accessibility. Herein, we present a sandwich-structured foldable paper-based TENG (FP-TENG) that comprises flexible materials and uses paper as a substrate. The FP-TENG can generate up to 572 mW/m 2 of power via contact–separation of the triboelectric electrified body at the top and bottom. With more folds of the FP-TENG, the triboelectric cross-sectional area increases, and, thus, the electrical output increases. In addition, the proposed TENG exhibits excellent durability without signal degradation under 5000 cycles of repeated pushing motions. To demonstrate its practicality, the FP-TENG was manufactured in the form of a wristwatch Velcro and connected to an electronic watch panel to supply power. Various deformations are possible with origami, and they can drive wristwatches through external forces. Therefore, the FP-TENG is expected to be utilized as a sustainable and promising eco-friendly energy source for small electronic devices.

Keywords: eco-friendly; wearables; energy harvesting; paper substrate; stripe patterns; triboelectric nanogenerator (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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