Ferroelectric ceramic dispersion to enhance the β phase of polymer for improving dielectric and ferroelectric properties of the composites

Dash, Smaranika; Mohanty, Hari Sankar; Ravikant,; Kumar, Ashok; Thomas, Reji; Pradhan, Dillip K.

doi:10.1007/s00289-020-03372-4

Cited by 32 publications

(23 citation statements)

References 51 publications

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“…Crystalline fractions within the composite fibers can be analyzed from the variation in peak intensities with the introduction of filler particles. It's clear from the figure that the electroactive phase enhances considerably with the introduction of metal oxides, and b-phase transformation also exist [34,35]. This is because of the influence of semiconducting fillers in determining the diploe alignments within the PVDF chains [20].…”

Section: Morphology and Structural Analysis Of The Electrospun Nanocompositesmentioning

confidence: 97%

Piezoelectric properties of zinc oxide/iron oxide filled polyvinylidene fluoride nanocomposite fibers

AlAhzm

Alejli

Ponnamma

et al. 2021

J Mater Sci: Mater Electron

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Piezoelectric nanogenerators (PENG) with flexible and simple design have pronounced significance in fabricating sustainable devices for self-powering electronics. This study demonstrates the fabrication of electrospun nanocomposite fibers from polyvinylidene fluoride (PVDF) filled zinc oxide (ZnO)/iron oxide (FeO) nanomaterials. The nanocomposite fiber based flexible PENG shows piezoelectric output voltage of 5.9 V when 3 wt% of ZnO/FeO hybrid nanomaterial is introduced, which is 29.5 times higher than the neat PVDF. No apparent decline in output voltage is observed for almost 2000 s attributed to the outstanding durability. This higher piezoelectric output performance is correlated with the β-phase transformation studies from the Fourier transformation infrared spectroscopy and the crystallinity studies from the differential scanning calorimetry. Both these studies show respective enhancement of 3.79 and 2.16% in the β-phase crystallinity values of PVDF-ZnO/FeO 3 wt% composite. Higher dielectric constant value obtained for the same composite (three times higher than the neat PVDF) confirms the increased energy storage efficiency as well. Thus the proposed soft and flexible PENG is a promising mechanical energy harvester, and its good dielectric properties reveals the ability to use this material as good power sources for wearable and flexible electronic devices.

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Section: Morphology and Structural Analysis Of The Electrospun Nanocompositesmentioning

confidence: 97%

Piezoelectric properties of zinc oxide/iron oxide filled polyvinylidene fluoride nanocomposite fibers

AlAhzm

Alejli

Ponnamma

et al. 2021

J Mater Sci: Mater Electron

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“…The surface morphologies of the prepared nanocomposite films were characterized by SEM measurements, as shown in Figure a–d. The preannealed PVDF film exhibited the formation of indefinite spherulitic structures with large diameters of ∼10–12 μm (Figure a), which originated from the semicrystalline and nonpolar α-crystal phase of PVDF . Following the addition of MoS 2 , slightly smaller (∼10 μm) discrete spherulite particles were observed, as shown in the SEM image of the preannealed MoS 2 @PVDF film (Figure b).…”

Section: Resultsmentioning

confidence: 90%

Enhanced Triboelectric Effects of Self-Poled MoS₂-Embedded PVDF Hybrid Nanocomposite Films for Bar-Printed Wearable Triboelectric Nanogenerators

Hedau

Kang

2022

ACS Nano

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Self-poled molybdenum disulfide embedded polyvinylidene fluoride (MoS2@PVDF) hybrid nanocomposite films fabricated by a bar-printing process are demonstrated to improve the output performances of triboelectric nanogenerators (TENGs). Comparative analyses of MoS2@PVDF films with different MoS2 concentrations and the synergic effect based on postannealing at different temperatures were examined to increase the triboelectric open-circuit voltage and the short-circuit current (∼200 V and ∼11.8 μA, respectively). A further comprehensive study of the structural and electrical changes that occur on the surfaces of the proposed hybrid nanocomposite films revealed that both MoS2 incorporation into PVDF and postannealing can individually promote the formation of the β-crystal phase and generate polarity in the PVDF. In addition, MoS2, which provides triboelectric trap states, was found to play a significant role in improving the charge capture capacity of the nanocomposite film and increasing the potential difference between two electrodes of TENGs. The produced electrical energy of the developed wearable TENGs with excellent operational stability for a long duration was utilized to power a variety of mobile smart gadgets in addition to low-power electronic devices. We believe that this study can provide a simple and effective approach to improving the energy-harvesting capabilities of wearable TENGs based on hybrid nanocomposite films.

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“…The SEM micrographs of SPES are smooth, continuous and consist of spherical spherulites as in Figure (e)-(i) . Poly(salts) were uniformly mixed with a PVDF-HFP polymer matrix, indicating a proper solvents ratio in the synthesis procedure.…”

Section: Resultsmentioning

confidence: 95%

“…The saturated water content of SPES and GPES without gel with saturated water was 1.29% and 2%, respectively, as calculated from weight (%) loss calculated at 110 °C as shown in the inset of Figure (e). A trace amount of water was absorbed in SPES after air exposure for 2 days in a typical atmosphere based on FTIR spectra (Figure S8), with the peak around 3400 cm –1 corresponding to water molecules 3400 cm –1 . Dry PISC also shows a peak of ∼3400 cm –1 for NH of the sulfamic group.…”

Section: Resultsmentioning

confidence: 99%

Building Sodium Metal Battery with Polyisoprene-Based Air-Stable Single-Ion Gel Polymer Electrolyte

Das,

Jana,

Orságh

et al. 2023

ACS Appl. Energy Mater.

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The intrinsically safe, flexible, single-ion gel polymer electrolytes with a high transference number (0.75) have been developed by making the proper blending of a poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) copolymer and biocompatible poly((sulfamate-carboxylate) isoprene) (PISC) when soaked in carbonate solvents. More interestingly, a steady conductivity of 1.81 × 10 −5 S/cm is observed for 15 days under normal air exposure conditions (RH = 45%−61%, T = 25−31 °C). The sodium metal battery with an NVP cathode demonstrates charge/discharge cycling at 80 °C with 82% capacity retention at a C/5 rate after 45 cycles. To trigger cycling performance at room temperature, the gel is formed with a conventional liquid electrolyte and a capacity retention of 67.92% after 200 cycles (C/10 rate) even after air exposure to the electrolyte.

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Ferroelectric ceramic dispersion to enhance the β phase of polymer for improving dielectric and ferroelectric properties of the composites

Cited by 32 publications

References 51 publications

Piezoelectric properties of zinc oxide/iron oxide filled polyvinylidene fluoride nanocomposite fibers

Piezoelectric properties of zinc oxide/iron oxide filled polyvinylidene fluoride nanocomposite fibers

Enhanced Triboelectric Effects of Self-Poled MoS₂-Embedded PVDF Hybrid Nanocomposite Films for Bar-Printed Wearable Triboelectric Nanogenerators

Building Sodium Metal Battery with Polyisoprene-Based Air-Stable Single-Ion Gel Polymer Electrolyte

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Ferroelectric ceramic dispersion to enhance the β phase of polymer for improving dielectric and ferroelectric properties of the composites

Cited by 32 publications

References 51 publications

Piezoelectric properties of zinc oxide/iron oxide filled polyvinylidene fluoride nanocomposite fibers

Piezoelectric properties of zinc oxide/iron oxide filled polyvinylidene fluoride nanocomposite fibers

Enhanced Triboelectric Effects of Self-Poled MoS2-Embedded PVDF Hybrid Nanocomposite Films for Bar-Printed Wearable Triboelectric Nanogenerators

Building Sodium Metal Battery with Polyisoprene-Based Air-Stable Single-Ion Gel Polymer Electrolyte

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Enhanced Triboelectric Effects of Self-Poled MoS₂-Embedded PVDF Hybrid Nanocomposite Films for Bar-Printed Wearable Triboelectric Nanogenerators