Piezoelectric and magnetoelectric evaluations on PVDF/CoFe2O4 based flexible nanogenerators for energy harvesting applications

Koç, Muhterem; Dönmez, Çiğdem Elif Demirci; Paralı, Levent; Sarı, Ali; Aktürk, Selçuk

doi:10.1007/s10854-022-07956-w

Cited by 12 publications

(6 citation statements)

References 56 publications

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“…A long-range order of the coupled dipoles is duly extended on the electrical poling (Figure 11c), toward a good supplier ME response. Thus, both α me 17,92−95 and V me 9,92,96,97 emerged much larger than recently reported ones (Figure 11e,f). Evidently, the energy harvesting performance can be optimized if the electric dipoles are poled fully in due electric fields, unless the films are fragile.…”

Section: Resultscontrasting

confidence: 45%

A Spin-Charge-Regulated Self-Powered Nanogenerator for Simultaneous Pyro-Magneto-Electric Energy Harvesting

Saini,

Sengupta,

Mondal

et al. 2024

ACS Nano

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In view of the depletion of natural energy resources, harvesting energy from waste is a revolution to simultaneously capture, unite, and recycle various types of waste energies in flexible devices. Thus, in this work, a spin-charge-regulated pyro-magnetoelectric nanogenerator is devised at a well-known ferroelectric P(VDF-TrFE) copolymer. It promptly stores thermal-magnetic energies in a "capacitor" that generates electricity at room temperature. The ferroelectric domains are regulated to slip at the interfaces (also twins) of duly promoting polarization and other properties. An excellent pyroelectric coefficient p ∼ 615 nC•m −2 •K −1 is obtained, with duly enhanced stimuli of a thermal sensitivity ∼1.05 V•K −1 , a magnetoelectric coefficient α me ∼8.8 mV•cm −1 •Oe −1 at 180 Hz (resonance frequency), and a magnetosensitivity ∼473 V/T. It is noteworthy that a strategy of further improving p (up to 41.2 μC•m −2 •K −1 ) and α me (up to 23.6 mV•cm −1 •Oe −1 ) is realized in the electrically poled dipoles. In a model hybrid structure, the spins lead to switch up the electric dipoles parallel at the polymer chains in a cohesive charged layer. It is an innovative approach for efficiently scavenging waste energies from electric vehicles, homes, and industries, where abundant thermal and magnetic energies are accessible. This sustainable strategy could be useful in next-generation self-powered electronics.

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Section: Resultscontrasting

confidence: 45%

A Spin-Charge-Regulated Self-Powered Nanogenerator for Simultaneous Pyro-Magneto-Electric Energy Harvesting

Saini,

Sengupta,

Mondal

et al. 2024

ACS Nano

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“…Among the magnetic materials, the well-known ferromagnetics CoFe 2 O 4 (CFO) and NiFe 2 O 4 (NFO) have been employed as filler particles in the PVDF matrix in the ME EH. Koc et al made the nanocomposite CFO/PVDF and utilized it in the EH performance, but they did not measure the direct ME coupling coefficients . In NFO case, the ME coupling coefficient was measured at room temperature (RT) but the EH efficiency was very less (0.1%) .…”

Section: Introductionmentioning

confidence: 99%

“…Koc et al made the nanocomposite CFO/PVDF and utilized it in the EH performance, but they did not measure the direct ME coupling coefficients. 20 In NFO case, the ME coupling coefficient was measured at room temperature (RT) but the EH efficiency was very less (0.1%). 21 Besides, antiferromagnetic NPs have not been used as filler particles to the best of our knowledge.…”

Section: Introductionmentioning

confidence: 99%

Energy-Harvesting Performance in a LaYFe₂O₆/P(VDF-HFP) Nanocomposite by Boosting the Magnetoelectric Effect

Ghosh

Barik

Sahoo

et al. 2023

ACS Appl. Nano Mater.

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The present work reports an enhanced magnetoelectric (ME) effect at room temperature (RT) and above in a nanocomposite of LaYFe 2 O 6 /poly(vinylidene fluoride)−hexafluoropropylene [LaYFe 2 O 6 /P(VDF-HFP)], which is prepared by the solution-casting method. Field-emission scanning electron microscopy, X-ray diffraction, and Fourier transform infrared spectroscopy reveal excellent phase-to-phase connectivity and an enhanced beta-phase fraction in the PVDF matrix by the incorporation of 10 wt % antiferromagnetic nanoparticles (NPs). This is also substantiated by the improved ferroelectric (electric-field-dependent polarization) response by a 10 wt % sample. At RT, this nanocomposite manifests a first-order ME coupling coefficient of ∼2.92 mV cm −1 Oe −1 and a second-order ME coupling coefficient of ∼0.051 μV cm −1 Oe −2 (significantly 1 order higher than that of pristine LaYFe 2 O 6 ). The enhanced ME coefficient at RT and above makes it a viable candidate to address the challenges of ME-based device applications. A flexible, portable, lightweight, costeffective magnetoelectric nanogenerator (MENG) fabricated from the nanocomposite film is able to harvest the wasted magnetic energy with an efficiency of 1.5%. As a demonstration, the harvested electric energy is stored in a capacitor, which, in turn, is used to power a light-emitting diode (LED). The present work hence suggests the deployment of this material for self-powered wearable devices.

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“…[20] This popular energy harvesting method has been studied by many researchers and groups. [21][22][23][24][25] The main purpose of these studies is to increase the efficiency of the energy harvesting systems based on flow-induced vibrations and thus ensure sustainability.…”

Section: Introductionmentioning

confidence: 99%

“…The most common way of increasing these motions is the application of bluff-body geometries, which are fixedly mounted on the beam element. [23][24][25][26][27][28] Kim et al [29] proposed a novel piezoelectric energy harvester based on coupled transverse and interference galloping to improve the energetic performance of the galloping-based piezoelectric energy harvester system. A hybrid piezoelectric-electromagnetic energy harvester was investigated by Muthalif et al [30] where a bluff body was used as a harvester which has vibrational motions resulting from vortices that appear around this body.…”

Section: Introductionmentioning

confidence: 99%

Energy Harvesting by V‐Shape Bluff Bodies with Various Apical Angles Attached to a Revolute Joint

Özkan,

Basaran,

Erkan

2023

Energy Tech

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This study parametrically investigates the efficiency of an integrated energy harvesting system that consists of a piezoelectric patch attached to a cantilever beam and V‐shape bluff bodies with various apical angles. V‐shape bluff bodies are connected to a cantilever beam with a revolute joint that represents a two degrees‐of‐freedom configuration. The mechanical energy of the galloping and fluttering motions, resulted from the vortex shedding appears downstream of the bluff bodies, is converted into electricity by means of a piezoelectric patch. The apical angle of the V‐shape geometries, varies between 0° and 180°, is the main parameter where the generated voltages and the related power curves are the major results for the evaluation of the efficiency of this harvesting system. Based on the experimental examinations, the maximum output power of 0.295 mW is produced at a wind speed of 10 m/s for the apical angle of 180° and the electrical resistance of 230 kΩ. Moreover, the proposed energy harvester system can still produce usable output power for the apical angles ranges from 0° to 20° and from 170° to 180°.This article is protected by copyright. All rights reserved.

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Piezoelectric and magnetoelectric evaluations on PVDF/CoFe2O4 based flexible nanogenerators for energy harvesting applications

Cited by 12 publications

References 56 publications

A Spin-Charge-Regulated Self-Powered Nanogenerator for Simultaneous Pyro-Magneto-Electric Energy Harvesting

A Spin-Charge-Regulated Self-Powered Nanogenerator for Simultaneous Pyro-Magneto-Electric Energy Harvesting

Energy-Harvesting Performance in a LaYFe₂O₆/P(VDF-HFP) Nanocomposite by Boosting the Magnetoelectric Effect

Energy Harvesting by V‐Shape Bluff Bodies with Various Apical Angles Attached to a Revolute Joint

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Piezoelectric and magnetoelectric evaluations on PVDF/CoFe2O4 based flexible nanogenerators for energy harvesting applications

Cited by 12 publications

References 56 publications

A Spin-Charge-Regulated Self-Powered Nanogenerator for Simultaneous Pyro-Magneto-Electric Energy Harvesting

A Spin-Charge-Regulated Self-Powered Nanogenerator for Simultaneous Pyro-Magneto-Electric Energy Harvesting

Energy-Harvesting Performance in a LaYFe2O6/P(VDF-HFP) Nanocomposite by Boosting the Magnetoelectric Effect

Energy Harvesting by V‐Shape Bluff Bodies with Various Apical Angles Attached to a Revolute Joint

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Energy-Harvesting Performance in a LaYFe₂O₆/P(VDF-HFP) Nanocomposite by Boosting the Magnetoelectric Effect