Flexible tri-layer piezoelectric nanogenerator based on PVDF-HFP/Ni-doped ZnO nanocomposites

Parangusan, Hemalatha; Ponnamma, Deepalekshmi; Al‐Maadeed, Mariam Al Ali

doi:10.1039/c7ra10223b

Cited by 102 publications

(57 citation statements)

References 56 publications

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“…Compared to the neat polymer (Fig. 7a), all nanocomposites show higher output voltages substantiating the contribution of crystallinity and reinforcement from the filler particles [32,33]. The tri phasic filler combination showed high output voltages with the maximum of 2 V (Fig.…”

Section: Piezoelectric Propertiesmentioning

confidence: 94%

“…The dielectric constant, dielectric loss, tan δ and conductivity values of the samples were checked during the frequency range from 10 −2 to 10 6 Hz. Piezoelectric studies were done using an assembled set up consisting of a vibrating shaker, amplifier, frequency generator and accelerometer [32,33]. Specific weights were placed on the sample in such a way that variable forces were imposed on it in the transverse direction.…”

Section: Characterization Methodsmentioning

confidence: 99%

“…the electrode spacing). The capacitance values of the samples and the d 33 constant values calculated are provided in Table 3. Maximum capacitance of 1050 pF and good piezoelectric response are observed for the sample containing the G-T/SrTiO 3 filler combination in 1:2 ratio.…”

Section: Piezoelectric Propertiesmentioning

confidence: 99%

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Stretchable quaternary phasic PVDF-HFP nanocomposite films containing graphene-titania-SrTiO3 for mechanical energy harvesting

et al. 2018

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Integrating efficient energy harvesting materials in to soft, flexible, and eco-friendly substrates could yield significant breakthroughs in wearable and flexible electronics. Substantial advances are emerged in fabricating devices which can conform to irregular surfaces in addition to integrating piezoelectric polymer nanocomposites in to mechanical generators and bendable electronics. Here, we present a tri-phasic filler combination of one-dimensional titanium dioxide (TiO 2 ) nanotubes, twodimensional reduced graphene oxide, and three-dimensional strontium titanate (SrTiO 3 ), introduced in to a semi-crystalline polymer, poly(vinylidene fluoride-co-hexafluoropropylene). Simple mixing method was adopted for the composite fabrication after ensuring a high interaction between the various fillers. The prepared films were tested for their piezoelectric responses and mechanical stretchability. The results showed that the piezoelectric constant has increased due to the change in the filler concentration and reached a value of 7.52 pC/N at 1:2 filler combination. The output voltage obtained for the same filler composition was about 10.5 times that of the voltage generated by the neat polymer. Thus, we propose integration of these materials in fabricating energy conversion devices that can be useful in flexible and wearable electronics.

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Section: Piezoelectric Propertiesmentioning

confidence: 94%

Section: Characterization Methodsmentioning

confidence: 99%

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Stretchable quaternary phasic PVDF-HFP nanocomposite films containing graphene-titania-SrTiO3 for mechanical energy harvesting

et al. 2018

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“…A linear increment in microstrain with slope,

\frac{normalΔ s}{normalΔ w_{CuPc}}

= 4.4 × 10 −5 was observed for PVDF/CuPc nanocomposite as shown in Figure which leads to a microstrain with maximum value of 2.7 × 10 −3 for the PVDF/CuPc (70/30) nanocomposite. The values of strain calculated for PVDF/MPc nanocomposites are very similar to that of PVDF‐HFP/Ni‐doped ZnO nanocomposites . The dislocation densities for PVDF/NiPc (70/30) and PVDF/CuPc (70/30) were 2.47 × 10 15 m −2 and 5.88 × 10 15 m −2 , respectively, and found in agreement with earlier report …”

Section: Resultsmentioning

confidence: 95%

“…The presence of the MPc filler and their interactions with PVDF may lead to microstrain and dislocations at the polymer surface. Hence, the microstrain (s) and dislocation density (δ) were estimated following the relation, 41,43…”

Section: Structural Analysis Of Pvdf/mpc Nanocomposite Multilayermentioning

confidence: 99%

Metallophthalocyanine‐enriched Langmuir‐Schaefer multilayers of poly(vinylidene fluoride)‐based nanocomposites

Kumar

Viswanath

2019

J of Applied Polymer Sci

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Engineering the surface morphology with optimized crystallinity is very crucial for practical applications such as energy storage, electromechanical devices, and self‐cleaning. Organic nanocomposites permit one to tune the dielectric properties by controlling the crystallinity and surface morphology. Here, we report our investigation on metallophthalocyanines of nickel and copper as an organic additive to poly(vinylidene fluoride) (PVDF) to modify the structural, optical, wetting, and electrical properties of the nanocomposite multilayers deposited using Langmuir‐Schaefer method. The incorporation of the metallophthalocyanines in the nanocomposite multilayers was confirmed from the signature Bragg peaks, and the fingerprint absorbance using grazing incidence X‐ray diffraction and Fourier transform infrared spectroscopy, respectively. Aggregation behavior of the metallophthalocyanines in the polar matrix of PVDF was studied using ultraviolet–visible spectroscopy. Surface morphological studies using field emission scanning electron microscopy on the nanocomposite multilayers show the presence of both spherical crystallites and rod‐like structures which depends upon the composition and nature of metal in metallophthalocyanine. The surface wettability of these multilayers was investigated using static and dynamic contact angle studies. A significant enhancement in the dielectric constant has been observed for both nanocomposites relative to the pristine multilayer of PVDF. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47818.

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BNT‐Based Hybrid Piezoelectric Materials

Sasmal,

Sen,

Arockiarajan

2024

Hybrid Materials for Piezoelectric Energy Harvesting and Conversion

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Flexible tri-layer piezoelectric nanogenerator based on PVDF-HFP/Ni-doped ZnO nanocomposites

Abstract: In this work, we report Ni doped ZnO/poly(vinylidene fluoride-hexafluoropropylene) [PVDF-HFP] nanocomposites prepared by sandwiching and highlight their application in piezoelectric nano-generators.

Cited by 102 publications

References 56 publications

Stretchable quaternary phasic PVDF-HFP nanocomposite films containing graphene-titania-SrTiO3 for mechanical energy harvesting

Stretchable quaternary phasic PVDF-HFP nanocomposite films containing graphene-titania-SrTiO3 for mechanical energy harvesting

Metallophthalocyanine‐enriched Langmuir‐Schaefer multilayers of poly(vinylidene fluoride)‐based nanocomposites

BNT‐Based Hybrid Piezoelectric Materials

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