Adsorption of Charge Carriers on Radial Zinc Oxide and the Study of Their Stability and Dielectric Behavior in Poly(vinylidene fluoride)

Aepuru, Radhamanohar; Panda, H. S.

doi:10.1021/jp504527b

Cited by 26 publications

(27 citation statements)

References 37 publications

(80 reference statements)

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“…Aepuru et al reported a user-friendly chemical process for the preparation of the filler that resulted in stable fillers in polymers and enhanced the dielectric properties of the composite at different frequencies and temperatures. They modified ZnO with polyaniline (PANI) as an interface in ZnO and used the PANI modified ZnO as fillers in PVDF [ 36 ].…”

Section: Polymer Based Substratesmentioning

confidence: 99%

Piezoelectric Polymer and Paper Substrates: A Review

Sappati

Bhadra

2018

Sensors

206

141

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Polymers and papers, which exhibit piezoelectricity, find a wide range of applications in the industry. Ever since the discovery of PVDF, piezo polymers and papers have been widely used for sensor and actuator design. The direct piezoelectric effect has been used for sensor design, whereas the inverse piezoelectric effect has been applied for actuator design. Piezo polymers and papers have the advantages of mechanical flexibility, lower fabrication cost and faster processing over commonly used piezoelectric materials, such as PZT, BaTiO3. In addition, many polymer and paper materials are considered biocompatible and can be used in bio applications. In the last 20 years, heterostructural materials, such as polymer composites and hybrid paper, have received a lot of attention since they combine the flexibility of polymer or paper, and excellent pyroelectric and piezoelectric properties of ceramics. This paper gives an overview of piezoelectric polymers and papers based on their operating principle. Main categories of piezoelectric polymers and papers are discussed with a focus on their materials and fabrication techniques. Applications of piezoelectric polymers and papers in different areas are also presented.

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Section: Polymer Based Substratesmentioning

confidence: 99%

Piezoelectric Polymer and Paper Substrates: A Review

Sappati

Bhadra

2018

Sensors

206

141

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“…[17] There have also been some researchers who have used ZnO as fillers to dope PVDF. [8,18] These studies confirmed that ZnO can significantly enhance the dielectric properties of the material.…”

Section: Introductionmentioning

confidence: 53%

“…However, the volume fraction of ceramics is required to be no less than 0.50. [8,18] These studies confirmed that ZnO can significantly enhance the dielectric properties of the material. [12] Lee et al [13,14] filled treated BaTiO 3 with PVDF.…”

Section: Introductionmentioning

confidence: 69%

Preparation and properties of polyvinylidene fluoride/tetra‐needle like‐zinc oxide whisker composites

Weng

Zhang

et al. 2017

Adv Polym Technol

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With the rapid development of the electronics industry, dielectric materials with a high-dielectric constant are playing an increasingly important role in the performance of electronic devices. In this study, a composite that employed polyvinylidene fluoride (PVDF) as a matrix and four-needle zinc oxide whisker (T-ZnO w ) for reinforcement was prepared by casting method. The microstructure and crystallization behavior of the PVDF/T-ZnO w were analyzed by SEM, FT-IR and XRD. Thermal stability and electrical properties of the composites, included the dielectric constant, dielectric loss and electrical breakdown strength, were tested. Analysis on microstructures indicated that the T-ZnO w in composites were uniformly dispersed and some of the whisker's tips had penetrated through the surface of the composites because of the special four-needle structure. Experimental results showed that the addition of T-ZnO w significantly improved the thermal stability of the composites.Broadband dielectric spectroscopy test results showed that the dielectric properties and conductivity of the composites significantly improved with the increase in T-ZnO w contents. The dielectric constant of the composites was 113 at 100 Hz when the T-ZnO w content was 20% at weight content. K E Y W O R D Scomposites, dielectric properties, four-needle zinc oxide whisker, molding, polyvinylidene fluoride

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“…Moreover, the EPR signal intensity increased significantly in the spectra of PCN1 and PCN0 compared to that of CN, which suggests a higher unpaired electron spin density. The number of charge carriers is related directly to material conductivity and is obtained from Equation :

true N_{c} = (σ / ρ e μ)

…”

Section: Resultsmentioning

confidence: 99%

Enriched Doping Level and Tuned Fiber Fractal Dimensions in Nonwoven Carbon‐Doped Polyaniline for Efficient Solid‐State Supercapacitors

2016

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Nonwoven fibrous mats of polyaniline/carbon black on conducting substrates are synthesized through a two‐step oxidative process. Adsorbed and catalyzed aniline monomers in the synthesis process improved the doping degree (0.381) in the hybrid fibers. The formation of a porous mat on substrates was confirmed by using electron microscopy and small‐angle X‐ray scattering. The fractal dimensions of the fibers are correlated with Porod's law and suggest the presence of a nonfractal structure in the PCN1 mat. The hybrid mat exhibited a high porosity and effective surface area, even interfaces, and conductive pathways for the electrode/electrolyte to improve the kinetic process. Electrochemical measurements have been conducted on developed fibers, which showed a high specific capacitance of around 1526 F g−1, excellent cyclic stability, and elevated energy density (212 Wh kg−1) after doping carbon into polyaniline (PANI). Additionally, a symmetric solid‐state supercapacitor device was fabricated, a capacitance around 270 F g−1 was measured, and it was able to light a commercial light‐emitting diode (LED).

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Adsorption of Charge Carriers on Radial Zinc Oxide and the Study of Their Stability and Dielectric Behavior in Poly(vinylidene fluoride)

Cited by 26 publications

References 37 publications

Piezoelectric Polymer and Paper Substrates: A Review

Piezoelectric Polymer and Paper Substrates: A Review

Preparation and properties of polyvinylidene fluoride/tetra‐needle like‐zinc oxide whisker composites

Enriched Doping Level and Tuned Fiber Fractal Dimensions in Nonwoven Carbon‐Doped Polyaniline for Efficient Solid‐State Supercapacitors

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