Hierarchically Structured Porous Piezoelectric Polymer Nanofibers for Energy Harvesting

Advanced Science
Mohammad Mahdi AbolhasaniKamal Asadi

Abstract

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.

References

Jan 6, 2010·Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology·Shashishekar P AdigaRoger J Narayan
Mar 11, 2010·Advanced Materials·Ronald C G NaberBert de Boer
Nov 24, 2011·Nano Letters·SeungNam ChaKinam Kim
Oct 6, 2015·Nature Materials·Ilias KatsourasDago M de Leeuw

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Citations

Apr 3, 2021·Journal of Chemical Theory and Computation·Yeol Kyo ChoiWonpil Im
Jul 9, 2021·Advanced Healthcare Materials·Brendan L TurnerMichael A Daniele
Oct 19, 2021·ACS Applied Materials & Interfaces·Dipankar BarpuzaryMoon Jeong Park

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Methods Mentioned

BETA
scanning electron microscopy
differential scanning calorimetry
infrared spectroscopy

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