Mechanisms for Enhancing Polarization Orientation and Piezoelectric Parameters of PVDF Nanofibers

Mechanisms for Enhancing Polarization Orientation and Piezoelectric Parameters of PVDF Nanofibers
Title:
Mechanisms for Enhancing Polarization Orientation and Piezoelectric Parameters of PVDF Nanofibers
Other Titles:
Advanced Electronic Materials
Publication Date:
26 April 2018
Citation:
Yousry, Y. M., Yao, K., Chen, S., Liew, W. H., Ramakrishna, S., Adv. Electron. Mater. 2018, 4, 1700562. https://doi.org/10.1002/aelm.201700562
Abstract:
Many emerging applications strongly demand flexible and efficient electromechanical conversion materials. Polymeric piezoelectric materials, with ability of large area and low temperature processing are attractive to obtain wide applications for electromechanical sensors, transducers and mechanical energy harvesters. A major drawback of the polymeric piezoelectric materials is their much lower piezoelectric performance property, such as piezoelectric strain coefficient, than their ceramic counterparts. Here outstanding piezoelectric performance properties with giant effective strain and voltage coefficients of −116 pm V-1 and −1180 V mm N-1 have been achieved in electrospun polyvinylidene fluoride (PVDF) nanofiber films from the precursor solution modified with hydrated salt. Our experimental results and theoretical analysis clarify a synergistic interactive role from the hydrated salt and the electric field during electrospinning effectively leading to polarization enhancement and alignment, and hence the giant macroscopic piezoelectric coefficients in the obtained electrospun fiber films. The demonstrated results and the understanding on the underlying mechanism exhibit the potential and strategy in achieving high performance functional materials through dedicated control on their nanostructures and polarizations.
License type:
PublisherCopyrights
Funding Info:
The authors acknowledge the research grant support in part by the Singapore Maritime Institute under the Asset Integrity & Risk Management (AIM) R&D Programme, Project ID: SMI-2015-OF-01, and IMRE/15-9P1115.
Description:
This is the peer reviewed version of the following article: Yousry, Y. M., Yao, K., Chen, S., Liew, W. H., Ramakrishna, S., Adv. Electron. Mater. 2018, 4, 1700562. https://doi.org/10.1002/aelm.201700562 , which has been published in final form at https://doi.org/10.1002/aelm.201700562. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
ISSN:
2199-160X
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