Piezoelectric and magnetoelectric evaluations on PVDF/CoFe2O4based flexible nanogenerators for energy harvesting applications

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dc.contributor.authorKoç M.
dc.contributor.authorDönmez Ç.E.D.
dc.contributor.authorParalı L.
dc.contributor.authorSarı A.
dc.contributor.authorAktürk S.
dc.date.accessioned2024-07-22T08:04:44Z
dc.date.available2024-07-22T08:04:44Z
dc.date.issued2022
dc.description.abstractIn this study, flexible PVDF/CoFe2O4based nanogenerators were fabricated using composite fibers which were prepared by combining polyvinylidene difluoride (PVDF) and cobalt ferrite (CoFe2O4) nanoparticles (NPs: ~16 nm diameter) at a concentration of 1, 3, 5, 7, and 10 wt%. All of the flexible PVDF/CoFe2O4 nanofibers were characterized by X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). The incorporation of CoFe2O4 NPs into the PVDF leads to the formation a rich electroactive β-phase in the composite structure. The piezoelectric properties of nanogenerators indicate that the nanogenerator based on the PVDF/CoFe2O4 fibers containing CoFe2O4 NPs at a concentration of 3 wt% has a greater power efficiency of 27.2% at 20 Hz compared to that of the nanogenerator with the pure PVDF fibers at 10 Hz, under the same resistive load of 2.5 MΩ. The results also show the magnetoelectric properties of the nanogenerator with PVDF + 10 wt% CoFe2O4 reached the highest voltage value of 18.87mV at the same load resistive load (2.5 MΩ) for a low-level magnetic field frequency of 50 Hz. The specially improved nanogenerators which have capability of producing electrical signals at the same time from mechanical and magnetic stimulations hold promise for the development of wearable electronics devices. © 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
dc.identifier.DOI-ID10.1007/s10854-022-07956-w
dc.identifier.issn09574522
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/12823
dc.language.isoEnglish
dc.publisherSpringer
dc.subjectFourier transform infrared spectroscopy
dc.subjectIron compounds
dc.subjectPiezoelectricity
dc.subjectScanning electron microscopy
dc.subjectX ray powder diffraction
dc.subjectCobalt ferrites
dc.subjectComposite fibres
dc.subjectElectro actives
dc.subjectInfrared scanning
dc.subjectMagnetoelectrics
dc.subjectNanogenerators
dc.subjectNanoparticle (NPs)
dc.subjectPiezoelectric
dc.subjectPolyvinylidene difluoride
dc.subjectResistive loads
dc.subjectNanogenerators
dc.titlePiezoelectric and magnetoelectric evaluations on PVDF/CoFe2O4based flexible nanogenerators for energy harvesting applications
dc.typeArticle

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