Dielectric constant and energy density of poly(vinylidene fluoride) nanocomposites filled with core-shell structured BaTiO3@Al2O3 nanoparticles

Yao, Manwen; You, Siyuan; Peng, Yong

doi:10.1016/j.ceramint.2016.11.128

Cited by 73 publications

(25 citation statements)

References 24 publications

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“…Such a core–shell structure approach has been widely used in experimental, and various buffer layer with lower dielectric constant, e.g., Al 2 O 3 , SiO 2 , TiO 2 , have been coated onto the high dielectric constant core . For example, Marks and co‐workers reported a layer‐by‐layer method to coat Al 2 O 3 shells on the surface of high‐ε r ceramic nanoparticles including BaTiO 3 , ZrO 2 , MgO, SrTiO 3 , and Ba 0.5 Sr 0.5 TiO 3 .…”

Section: Interfacial Enhancement Effect Of Breakdown Strength and Diementioning

confidence: 99%

Superior Energy Storage Performances of Polymer Nanocomposites via Modification of Filler/Polymer Interfaces

Zhang

Dong

et al. 2018

Adv Materials Inter

192

112

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systems, they have numerous applications in various fields as pulsed power supply technology, [8,9] energy harvesting, [10][11][12] inverters, [13][14][15] and passive elements, [16][17][18] toward both defense and civil industries. Excellent energy storage capabilities of dielectric materials including high discharged energy density and high energy efficiency have long been eagerly pursued to meet the challenges and needs of the rapid development of modern industry, i.e., the low energy density of current dielectric materials results in overburdened capacitor volume and weight in electrical power systems. The energy storage performances of dielectric materials are usually multiply determined by three major electrical and dielectric parameters, which are categorized as:1) The breakdown strength E b ;2) The relative permittivity (also called dielectric constant) ε r or electric displacement D (the electric displacement is related to the polarization P by D = P + ε 0 E, here ε 0 = 8.85 × 10 −12 F m −1 is the vacuum permittivity); 3) The dielectric loss tanδ.In general, as illustrated in Figure 1, the discharged energy density of dielectric materials can be determined aswhere E is the applied electric field, and the energy efficiency is calculated by Dielectric polymer nanocomposites by integration of high-E b polymer matrix and high-D(ε r ) ceramic fillers have shown great potential for dielectric and energy storage applications in modern electronic and electrical systems. Interface between ceramic fillers and polymer matrix is considered as a predominant factor to determine the dielectric performances of the nanocomposites. This review analyzes the influence of the interface on dielectric responses and breakdown strength in the nanocomposites, and discusses the viability of current interface engineering strategies in improving their energy storage capabilities. Two scopes of current interface modification approaches are focused from both structural and functional considerations in the dielectric ceramics/polymer nanocomposites: first, the organic/inorganic interface compatibility can be modified to generate homogeneous dispersion of ceramic nanoparticles in polymer matrix, which is the premise of fully realizing the synergistic combination of advantages of polymer and ceramic fillers; second, regulated local electrical and dielectric behaviors in interface region enable the enhancement of dielectric properties (both high dielectric constant and high breakdown strength) in resultant nanocomposites. In the last part, some present challenges and future perspectives are proposed to utilize the interface strategy for developing high energy density ceramics/ polymer nanocomposites for dielectric and energy storage applications.

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Section: Interfacial Enhancement Effect Of Breakdown Strength and Diementioning

confidence: 99%

Superior Energy Storage Performances of Polymer Nanocomposites via Modification of Filler/Polymer Interfaces

Zhang

Dong

et al. 2018

Adv Materials Inter

192

112

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“…Inorganic particles including ferroelectric ceramics and semiconductor ceramics have been widely introduced into polymer. It has been found that the energy density (U e ) and breakdown strength (E b ) of polymer dielectric materials are significantly improved by adding a small amount of inorganic filler.…”

Section: Introductionmentioning

confidence: 99%

Physical Mechanism of Breakdown Failure in Polymer Composites with Various Filler Loading

Ding

Kong

2019

ChemistrySelect

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Dielectric polymer materials consisting of zinc sulfide nanoparticles (ZnS_nps) and poly(vinylidene fluoride) (PVDF) were prepared by a solution‐casting process. The introduction of low filler loading results in obviously improved breakdown strength and energy density in comparison with pure PVDF, while the breakdown strength sharply becomes weak in the case of high filler loading. Based on the multi‐core model, the electric double layer theory as well as the physical model we built, we propose that the insulation and charge distribution of the composites are regulated by the inter‐fillers distance between neighboring fillers, resulting in the redistribution of the internal electric filed direction and the increase or decrease of the internal electric filed strength in the applied electric filed.

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“…Constructing core–shell structures is an important strategy for enhancing the dielectric properties of nanocomposites via surface modification. Core–shell structures, including insulated particle layer‐coated BTP, polymer‐coated BTP, and BTP coating other particles, suppress the leakage current and increase the energy density and breakdown strength. Additionally, the dielectric constants of the polymer matrices are enhanced .…”

Section: Introductionmentioning

confidence: 99%

Cleaner preparation of poly(vinylidene fluoride)/barium titanate composites: Thermal, mechanical, and dielectric properties and relaxation dynamics

Jiao

Deng

Yang

et al. 2018

J of Applied Polymer Sci

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Traditional polymer composite preparation techniques often employ organic solvents, which can damage the environment, to disperse inorganic fillers. In this article, classic nanocomposites with poly(vinylidene fluoride) (PVDF) polymer matrices and BaTiO3 nanoparticle (BTP) fillers were created by a clean method combining planetary ball milling with an ultracentrifugal mill and then hot pressed into thin films. The microstructures, properties and relaxation dynamics of the thin films were characterized and analyzed. Scanning electron microscopy results demonstrated that BTP was homogeneously dispersed in the PVDF matrix. The thermal, mechanical, and dielectric properties were comparable to those of composite films prepared by solution mixing. Dielectric analysis revealed that the dielectric constant of the thin films reached 14 (104 Hz) when the volume fraction of BTP was 30%; however, the dielectric loss was 0.1 (104 Hz). Additionally, the dielectric loss spectra fitted with the Havriliak−Negami (H−N) and Vogel Fulcher equations were employed to analyze the relaxation dynamics of the nanocomposites. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47254.

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Dielectric constant and energy density of poly(vinylidene fluoride) nanocomposites filled with core-shell structured BaTiO3@Al2O3 nanoparticles

Cited by 73 publications

References 24 publications

Superior Energy Storage Performances of Polymer Nanocomposites via Modification of Filler/Polymer Interfaces

Superior Energy Storage Performances of Polymer Nanocomposites via Modification of Filler/Polymer Interfaces

Physical Mechanism of Breakdown Failure in Polymer Composites with Various Filler Loading

Cleaner preparation of poly(vinylidene fluoride)/barium titanate composites: Thermal, mechanical, and dielectric properties and relaxation dynamics

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