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Title: Highly flexible, large-area, and facile textile-based hybrid nanogenerator with cascaded piezoelectric and triboelectric units for mechanical energy harvesting
Authors: Song, J 
Yang, B 
Zeng, W 
Peng, ZH 
Lin, SP 
Li, J 
Tao, XM 
Issue Date: Jun-2018
Source: Advanced materials technologies, June 2018, v. 3, no. 6, p. 1800016
Abstract: Despite of the rapid development and demonstrations of wearable energy harvesting devices, their industrial applications are limited by the lack of highly flexible, scalable, and facile fabrication methods. Especially, few studies have combined theoretical analysis with the relevant experimental verification. To this end, a highly flexible and large-area textile-based hybrid nanogenerator integrated a net-shaped nanofiber reinforced piezoelectric unit and a triboelectric unit with a microstructured surface configuration is demonstrated. Electrospinning is used to fabricate an optimized Polyvinylidenefluoride (PVDF)-carbon nanotube (CNT)-BaTiO 3 nanofiber/particle nonwoven fabric of 18 cm × 27 cm for the piezoelectric unit without further polarization. Then a large-area freestanding Polydimethylsiloxane (PDMS)-multiwall CNT-graphite flexible composite film of 20 cm × 25 cm, optimized for the triboelectric unit is prepared by the doctor-blading method. The resultant hybrid nanogenerator, 4.5 cm × 5 cm in size, generates a rectified average peak output voltage of 161.66 V, along with the highest peak power output of 2.22 W m -2 , directly driving 150 light-emitting diodes (LEDs). Importantly, an explicit theoretical model for the hybrid nanogenerator is proposed and good agreements are obtained between the theoretical and the corresponding experimental results, which shed new light on the mechanism and predict ways to optimize such hybrid nanogenerators.
Keywords: Flexible nanogenerators
Hybrid nanogenerators
Large-scale nanogenerators
Mechanical energy harvesting
Theoretical analysis
Publisher: Wiley-VCH
Journal: Advanced materials technologies 
EISSN: 2365-709X
DOI: 10.1002/admt.201800016
Rights: © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
This is the peer reviewed version of the following article: Song, J., Yang, B., Zeng, W., Peng, Z., Lin, S., Li, J., & Tao, X. (2018). Highly flexible, large‐area, and facile textile‐based hybrid nanogenerator with cascaded piezoelectric and triboelectric units for mechanical energy harvesting. Advanced Materials Technologies, 3(6), 1800016, which has been published in final form at https://doi.org/10.1002/admt.201800016. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
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