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An ultrathin stretchable triboelectric nanogenerator with coplanar electrode for energy harvesting and gesture sensing

Abstract

Stretchable electronics with excellent elastic characteristics is attracting extensive interest in the area of wearable devices and epidermal electronics. Here, we demonstrate an ultrathin stretchable triboelectric nanogenerator (s-TENG) with coplanar electrode for harvesting diversity biomechanical energies and acting as a self-powered gesture sensor. The s-TENG employs electrospinning polyurethane (PU) nanofibers and conductive nanomaterials as the stretchable electrode. With the coplanar electrode configuration, the device can generate electricity from diversity working situations, such as the folding/unfolding the device and contact/separating with other objects. Facilitated by the increased contact area of nanostructure and paired electrodes design, the s-TENG can generate enhanced instantaneous peak power density of 316.4 μW/cm2 when working at the folding/unfolding situation. When contact with other objects such as cotton cloth and human skin, peak voltage of 330 V and 286 V are obtained, respectively. Thanks to the ultrathin structure of the device, it can be conformally attached on skin and deforms as the body movements. By adjusting the dimension of device, the s-TENG can be used to detect human motion in different body parts, showing its great application prospects in sustainable wearable devices, self-powered electronic skins and smart wireless sensor networks.

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Publication details

The article was received on 09 Apr 2017, accepted on 17 May 2017 and first published on 18 May 2017


Article type: Paper
DOI: 10.1039/C7TA03092D
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
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    An ultrathin stretchable triboelectric nanogenerator with coplanar electrode for energy harvesting and gesture sensing

    X. Chen, Y. Song, H. Chen, J. Zhang and H. A. Zhang, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA03092D

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