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High-power wearable triboelectric nanogenerator prepared from self-assembled electrospun poly(vinylidene fluoride) fibers with heart-like structure

Abstract

Triboelectric nanogenerator (TENG) has received much attention due to its potential application in driving portable electronics. Despite the fast development of this technology, improving its performances in a simple manner still remains a great challenge. In this work, a heart-like micro-nanofiber based wearable triboelectric nanogenerator (HMN-TENG) with high performances is demonstrated. The three-dimensional (3D) secondary heart-like structure is designed and self-assemble on electrospun poly(vinylidene fluoride) (PVDF) fiber based tribonegative layer, and this structure can match the depressed porous and ravine-like structures on the tribopositive layer. The HMN-TENG deliveres the voltage, current density and power density outputs up to 1063 V, 97 mA m−2 and 14.8 W m−2, respectively. The high outputs stem from the joint effect between the heart-like structure and the porous structure, which enlarges the effective contact area via their high surface roughness and the “occlusion effect”. Furthermore, the practicability of the HMN-TENG is verified by driving 595 light-emitting diodes (LEDs), a scientific calculator and a timer. The washability is proved by comparing its voltages before and after washing for ten times as well as soaking in water for a week. The design offers a solution for performance enhancement of wearable TENG, and the approach presents a simple and cost-effective technology.

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Publication details

The article was received on 21 Feb 2019, accepted on 09 Apr 2019 and first published on 11 Apr 2019


Article type: Paper
DOI: 10.1039/C9TA01956A
Citation: J. Mater. Chem. A, 2019, Accepted Manuscript

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    High-power wearable triboelectric nanogenerator prepared from self-assembled electrospun poly(vinylidene fluoride) fibers with heart-like structure

    J. Zhang, Y. Li, J. Du, X. Hao and H. Huang, J. Mater. Chem. A, 2019, Accepted Manuscript , DOI: 10.1039/C9TA01956A

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