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A flexible comb electrode triboelectric-electret nanogenerator with separated microfibers for self-powered position, motion direction and acceleration tracking sensor

Abstract

In this paper, we report a flexible comb electrode triboelectric-electret coupling nanogenerator using a separated friction microfibers object for self-powered position, motion direction and acceleration track sensing and its energy harvesting. The power was generated from the coupling of the electrostatic and triboelectric effect among the separated triboelectric object, the polytetrafluoroethylene (PTFE) film and interdigital electrodes. Under an acceleration of 1 m/s2, we found that the corona charged PTFE film with a sliding motion reached ~3 times more short-circuit current (Isc) and ~6 times more open-circuit voltage (Voc) than the PTFE film without corona charges, respectively. Furthermore, we demonstrated that the device can be a good self-powered acceleration tracking sensor due to the stability charges and voltage out during the process of frictions between two separated components, but a numerical relationship of Isc with increased accelerations. Moreover, potential applications using several different separated materials such as a bulk of carbon microfibers, a finger sliding with nylon glove, and microdrop water were used to show the energy harvesting of various friction materials and their effective contact area. It was found that a much larger contact area “finger” sliding showed Voc of ~45 V differences, whereas a less contact area “microdrop” sliding on the prototype presented with a maximum peak Voc ~1.8 V.

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Publication details

The article was received on 13 May 2018, accepted on 27 Jul 2018 and first published on 28 Jul 2018


Article type: Paper
DOI: 10.1039/C8TA04443K
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
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    A flexible comb electrode triboelectric-electret nanogenerator with separated microfibers for self-powered position, motion direction and acceleration tracking sensor

    J. Zhu, X. Guo, D. Meng, M. Cho, I. Park, R. Huang and W. song, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C8TA04443K

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