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Hierarchically structured porous piezoelectric polymer nanofibers for energy harvesting

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journal contribution
posted on 2020-07-01, 00:00 authored by M M Abolhasani, Minoo NaebeMinoo Naebe, M Hassanpour Amiri, K Shirvanimoghaddam, S Anwar, J J Michels, K Asadi
Hierarchically porous piezoelectric polymer nanofibers are prepared through precise control over the thermodynamics and kinetics of liquid–liquid phase separation of nonsolvent (water) in poly(vinylidene fluoride‐trifluoroethylene) (P(VDF‐TrFE)) solution. Hierarchy is achieved by fabricating fibers with pores only on the surface of the fiber, or pores only inside the fiber with a closed surface, or pores that are homogeneously distributed in both the volume and surface of the nanofiber. For the fabrication of hierarchically porous nanofibers, guidelines are formulated. A detailed experimental and simulation study of the influence of different porosities on the electrical output of piezoelectric nanogenerators is presented. It is shown that bulk porosity significantly increases the power output of the comprising nanogenerator, whereas surface porosity deteriorates electrical performance. Finite element method simulations attribute the better performance to increased volumetric strain in bulk porous nanofibers.

History

Journal

Advanced Science

Volume

7

Issue

13

Article number

2000517

Publisher

Wiley

Location

London, England

ISSN

2198-3844

eISSN

2198-3844

Language

Eng

Publication classification

C1 Refereed article in a scholarly journal