naebe-hierarchicallystructured-2020.pdf (1.95 MB)
Hierarchically structured porous piezoelectric polymer nanofibers for energy harvesting
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 AsadiHierarchically 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 ScienceVolume
7Issue
13Article number
2000517Publisher
WileyLocation
London, EnglandPublisher DOI
ISSN
2198-3844eISSN
2198-3844Language
EngPublication classification
C1 Refereed article in a scholarly journalUsage metrics
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No categories selectedKeywords
Finite element simulationsNonogeneratorsPhase diagramsPiezoelectric nanogeneratorsPorous nanofibersSeparationMembranesPorosityPhaseFabricationMorphologyFiguresFibersLiquidPoly(vinylidene)Science & TechnologyPhysical SciencesTechnologyChemistry, MultidisciplinaryNanoscience & NanotechnologyMaterials Science, MultidisciplinaryChemistryScience & Technology - Other TopicsMaterials SciencenanogeneratorsPOLY(VINYLIDENE FLUORIDE)
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