Optical, Dielectric Properties and Energy Storage Efficiency of ZnO/Epoxy Nanocomposites

Jilani, W.; Fourati, Najla; Zerrouki, Chouki; Gallot‐Lavallée, Olivier; Guermazi, H.

doi:10.1007/s10904-018-1016-3

Cited by 37 publications

(13 citation statements)

References 35 publications

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“…For feasible application, It can be computed the energy density (U ) based on the data of the real part of the dielectric permittivity through the following relation [67]:…”

Section: Resultsmentioning

confidence: 99%

“…For feasible application, It can be computed the energy density ( U ) based on the data of the real part of the dielectric permittivity through the following relation [67]: where E indicates the applied electric field, E = 1 V/mm. Figure 11(a) shows the values of energy density at different frequencies of PVA, PVA/5%PANI, PVA/10%PANI, PVA/10%PANI/3%Ag, PVA/10%PANI/6%Ag films.…”

Section: Resultsmentioning

confidence: 99%

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Influence of ion beam and silver nanoparticles on dielectric properties of flexible PVA/PANI polymer composite films

Abdelhamied

Abdelreheem

Atta

2021

Plastics, Rubber and Composites

100

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In this work, a solution cast technique was used to prepare flexible nanocomposite films of PVA/ PANI/Ag with different concentrations of PANI and AgNPs. The samples were described by X-ray diffraction (XRD), transmission electron microscope (TEM), and infrared spectroscopy, which confirmed the successful synthesis of the nanocomposite films. After that, the PVA/10%PANI/ 6%Ag nanocomposite film was irradiated by different influences of the oxygen ion beam (8 × 1017, 16 × 1017, and 24 × 1017 ions/cm2). The Ac conductivity, dielectric properties, electric modulus, complex impedance behaviour, and the energy density efficiency of the nonirradiated and irradiated films were measured in the frequency range of 100-106 Hz. The results revealed significant changes in these parameters with an increase in concentrations of PANI and Ag nanoparticles inside the host and also with ion beam irradiation. The reported improvements in this study would open the road for appropriating the unirradiated and irradiated nanocomposite films for electromagnetic shielding and optoelectronic applications.

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“…For feasible application, It can be computed the energy density (U ) based on the data of the real part of the dielectric permittivity through the following relation [67]:…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Influence of ion beam and silver nanoparticles on dielectric properties of flexible PVA/PANI polymer composite films

Abdelhamied

Abdelreheem

Atta

2021

Plastics, Rubber and Composites

100

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“…Based on the data of the actual component of the dielectric permittivity, it is possible to calculate the energy density ( U ) for practical applications using the following relation 59 :

U = 1 / 2 ε^{'} ε_{o} E^{2},

where, ε ′ is electric permittivity, E indicates the applied electric field, E = 1 V/mm, and ε o = 8.85 × 10 −11 NV/m. Figure 11 shows the values of energy density at various frequencies for NaAlg@PVA incorporated graphene oxide nanoplates/titanium dioxide nanoparticles (GO NP/TiO 2 NPs) at various concentrations.…”

Section: Resultsmentioning

confidence: 99%

“…Based on the data of the actual component of the dielectric permittivity, it is possible to calculate the energy density (U) for practical applications using the following relation 59 :…”

Section: Argand Plot Analysismentioning

confidence: 99%

Hybrid GO/TiO₂ nanoparticles reinforced NaAlg/PVA blend: Nanocomposites for high‐performance energy storage devices

Alsalmah

Almehmadi

Farea

et al. 2023

Polymers for Advanced Techs

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In this study, novel flexible polymer nanocomposite films formed of polyvinyl alcohol (PVA), sodium alginate (NaAlg), titanium dioxide (TiO2) and graphene oxide (GO) as nanofiller are fabricated by using casting method. The PVA/NaAlg‐GO/TiO2 nanocomposite films are characterized using various techniques. The synergistic effects of GO/TiO2 on the electrical, dielectric properties, and the energy density efficiency of PVA/NaAlg blend have been investigated in the range of frequency from 10 Hz to 7 MHz. The XRD data showed that the intensity of the PVA/NaAlg‐GO/TiO2 nanocomposites films decrease with nanofiller concentration. The FTIR spectroscopy provides proof that the complex formed. The optical studies were carried out using UV–Vis. spectroscopy. The energy bandgap values of PVA/NaAlg‐GO/TiO2 nanocomposite films were calculated using Tauc's plot. It is shown that the host matrix's Eg value decreases from 4.97 to 4.29 eV for direct transitions and from 4.37 to 2.29 eV for indirect transitions. The electrical and dielectric parameters of the nanocomposites showed that the maximum electrical properties were observed for the composite with 8 wt% loading of GO/TiO2. The σdc increased from 2.45 × 10−9 to 5.02 × 10−7 S cm−1. In addition, frequency exponent S decreased from 0.82 to 0.54. These findings demonstrated that there are significant modifications in the fabricated samples, which open the road for utilizing the PVA/NaAlg‐GO/TiO2 nanocomposite as flexible films for solar cells and electrical energy storage applications.

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“…Furthermore, when ZnO and MnO 2 concentrations grew, conductivity as well as free carriers rose, altering the impedance. Energy density (U), that measure the ability to store energy, is given by [42]:…”

Section: Resultsmentioning

confidence: 99%

Effects of inorganic MnO2 and ZnO nanofillers on the structural investigations and dielectric behaviour of PVA polymeric materials

Alotaibi¹,

Alyousef²,

Atta³

et al. 2023

JOR

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Different contents of manganese oxide (MnO2) and zinc oxide (ZnO) were combined with polyvinyl alcohol (PVA) to form flexi MnO2/PVA as well as ZnO/PVA nanocomposite films. XRD as well SEM methodologies are used to evaluate the properties of the fabricated films. The XRD analysis demonstrates that MnO2/PVA as well as ZnO/PVA composites were effectively fabricated. The SEM pictures show that MnO2 and ZnO are uniformly dispersed throughout the PVA polymeric chains. Furthermore, the electrical conductivities, dielectric permittivity, electric moduli behaviors, as well as dielectric impedances of PVA, MnO2/PVA, ZnO/PVA films were recorded using LCR method in frequencies 102 to 106 Hz. At 105 Hz, the dielectric enhanced from 2.05 for PVA to 5.5 on PVA/5%ZnO and 4.15 for PVA/10%MnO2, while the conductivities increase from 1.05x10-7 S/cm for PVA to 4.01x10-7 S/cm for PVA/5%ZnO and to 5.4x10-7 S/cm for PVA/10%MnO2. The current work pave the way to using of ZnO/PVA and MnO2/PVA flexi nanocomposite films in a different uses including battery, super-capacitors, as well as storage devices.

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Optical, Dielectric Properties and Energy Storage Efficiency of ZnO/Epoxy Nanocomposites

Cited by 37 publications

References 35 publications

Influence of ion beam and silver nanoparticles on dielectric properties of flexible PVA/PANI polymer composite films

Influence of ion beam and silver nanoparticles on dielectric properties of flexible PVA/PANI polymer composite films

Hybrid GO/TiO₂ nanoparticles reinforced NaAlg/PVA blend: Nanocomposites for high‐performance energy storage devices

Effects of inorganic MnO2 and ZnO nanofillers on the structural investigations and dielectric behaviour of PVA polymeric materials

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Optical, Dielectric Properties and Energy Storage Efficiency of ZnO/Epoxy Nanocomposites

Cited by 37 publications

References 35 publications

Influence of ion beam and silver nanoparticles on dielectric properties of flexible PVA/PANI polymer composite films

Influence of ion beam and silver nanoparticles on dielectric properties of flexible PVA/PANI polymer composite films

Hybrid GO/TiO2 nanoparticles reinforced NaAlg/PVA blend: Nanocomposites for high‐performance energy storage devices

Effects of inorganic MnO2 and ZnO nanofillers on the structural investigations and dielectric behaviour of PVA polymeric materials

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Hybrid GO/TiO₂ nanoparticles reinforced NaAlg/PVA blend: Nanocomposites for high‐performance energy storage devices