High performance triboelectric nanogenerators based on phase-inversion piezoelectric membranes of poly(vinylidene fluoride)-zinc stannate (PVDF-ZnSnO3) and polyamide-6 (PA6)

Soin, Navneet ORCID: 0000-0002-0196-2071, Zhao, Pengfei, Prashanthi, K., Chen, Jinkai, Ding, Peng, Zhou, Erping, Shah, Tahir, Ray, Sekhar C., Tsonos, C., Thundat, T., Siores, E. ORCID: 0000-0003-2971-9580 and Luo, J. ORCID: 0000-0003-0310-2443 (2016) High performance triboelectric nanogenerators based on phase-inversion piezoelectric membranes of poly(vinylidene fluoride)-zinc stannate (PVDF-ZnSnO3) and polyamide-6 (PA6). Nano Energy, 30. pp. 470-480. ISSN 2211-2855

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High performance triboelectric nanogenerators based on phase-inversion piezoelectric membranes of poly(vinylidene fluoride)-zinc stannate (PVDF-ZnSnO3) and polyamide-6 (PA6).pdf - Accepted Version
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Abstract

Vertical contact-separation mode triboelectric generator (TEG) based on lead-free perovskite, zinc stannate (ZnSnO3)-polyvinylidene fluoride (PVDF) composite and polyamide-6 (PA6) membrane is demonstrated. For the 5 wt% PVDF-ZnSnO3 nanocomposites, the facile phase-inversion method provides a simple route to achieve high crystallinity and β-phase with a piezoelectric coefficient d33 of −65 pm V−1, as compared to −44 pm V−1 for pristine PVDF membranes. Consequently, at a cyclic excitation impact of 490 N/3 Hz, the PVDF-ZnSnO3/PA6 based TEGs provide a significantly higher voltage of 520 V and a current density of 2.7 mA m−2 (corresponding charge density of 62.0 µC m−2), as compared to the pristine PVDF-PA6 TEG which provides up to 300 V with a current density of 0.91 mA m−2 (corresponding to a charge density of 55.0 µC m−2). This increase in the electrical output can be attributed to not only the enhanced polarisation of PVDF by ZnSnO3 leading to an increase in the β-phase content, but also to the surface charge density increase by stress induced polarisation of ZnSnO3, leading to the generation of stronger piezoelectric potential. The work thus introduces a novel method of enhancing the surface charge density via the addition of suitable high polarisation piezoelectric materials thus eliminating the need for prior charge injection for fluoropolymer membranes.

Item Type: Article
Divisions: University of Bolton Research Centres > Institute for Materials Research and Innovation
Depositing User: Tracey Gill
Date Deposited: 20 Feb 2017 19:37
Last Modified: 01 Jun 2018 08:08
Identification Number: 10.1016/j.nanoen.2016.10.040
URI: http://ubir.bolton.ac.uk/id/eprint/1095

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