Dielectric performance of high permitivity nanocomposites: impact of polystyrene grafting on BaTiO<sub>3</sub> and TiO<sub>2</sub>

Grabowski, Christopher A.; Fillery, Scott P.; Koerner, Hilmar; Tchoul, Maxim N.; Drummy, Lawrence F.; Durstock, Michael F.; Vaia, Richard A.; Beier, Christopher W.; Brutchey, Richard L.

doi:10.1080/20550324.2016.1223913

Cited by 38 publications

(26 citation statements)

References 33 publications

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“…This situation can be relieved when individual fillers are positioned far away from each other (i.e., reducing the filler content) or less clustered (e.g., forming an ordered colloidal crystal). This is exactly seen from a similar 2D simulation, shown in Figure B . The probability for E L / E 0 > 2.5 is the lowest for a hexagonally close-packed (hcp) colloidal crystal, and the highest for clustered fillers.…”

Section: Polymer/high-κ Ceramic Particle Nanodielectricssupporting

confidence: 74%

Challenges and Opportunities of Polymer Nanodielectrics for Capacitive Energy Storage

Zhang

Allahyarov

et al. 2021

ACS Appl. Mater. Interfaces

129

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With the modern development of power electrification, polymer nanocomposite dielectrics (or nanodielectrics) have attracted significant research attention. The idea is to combine the high dielectric constant of inorganic nanofillers and the high breakdown strength/low loss of a polymer matrix for higher energy density polymer film capacitors. Although impressively high energy density has been achieved at the laboratory scale, there is still a large gap from the eventual goal of polymer nanodielectric capacitors. In this review, we focus on essential material issues for two types of polymer nanodielectrics, polymer/conductive nanoparticle and polymer/ceramic nanoparticle composites. Various material design parameters, including dielectric constant, dielectric loss, breakdown strength, high temperature rating, and discharged energy density will be discussed from both fundamental science and high-voltage capacitor application points of view. The objective is to identify advantages and disadvantages of the polymer nanodielectric approach against other approaches utilizing neat dielectric polymers and ceramics. Given the state-of-the-art understanding, future research directions are outlined for the continued development of polymer nanodielectrics for electric energy storage applications.

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Section: Polymer/high-κ Ceramic Particle Nanodielectricssupporting

confidence: 74%

Challenges and Opportunities of Polymer Nanodielectrics for Capacitive Energy Storage

Zhang

Allahyarov

et al. 2021

ACS Appl. Mater. Interfaces

129

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“…Better nanoparticle separation and interfacial structure were achievable using hairy nanoparticles, as shown in Figure 16. The US AFRL [ 191,192 ] grafted polystyrene matrix polymers to nanoparticle surfaces and observed significant benefits in maintaining dielectric breakdown strength and improving dielectric loss for BaTiO 3 and TiO 2 ‐based nanocomposites. However, the dielectric strength of the composite is not better than the neat polymer itself across all loading fractions of fillers.…”

Section: Endeavors To Enhance Dielectric Strengthmentioning

confidence: 99%

“…(e) Representative TEM of 22% v/v HNP PS@BaTiO 3 , demonstrating evidence of fractal‐like structure. [ 191 ] This is an Open Access article permitting unrestricted use [Color figure can be viewed at wileyonlinelibrary.com]…”

Section: Endeavors To Enhance Dielectric Strengthmentioning

confidence: 99%

The search for enhanced dielectric strength of polymer‐based dielectrics: A focused review on polymer nanocomposites

Tan

2020

J of Applied Polymer Sci

157

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Author Daniel Tan summarized the recent advances in dielectric composites with the focused search for the method of enhancing dielectric strength. A SEM image of the polymer composite is presented showing the nanoparticle dispersion and bonding with polymer matrix via an in-situ polymerization synthesis. The defects, electrical charge transport, surface imperfection causing dielectric breakdown may be suppressed by the adequate design of nanoparticle incorporation, core-shell configuration, and filler-polymer interface, which eventually leads to high performance dielectric nanocomposites for capacitors and electrical insulation.ARTICLES 48192 Microfibrillated-cellulose-reinforced polyester nanocomposites prepared by filtration and hot pressing: Bending properties and three-dimensional formability

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“…Kavitha et al 17 have reported that the fillers having high inherent permittivity compromise the breakdown strength of the composite and vice versa. Also, when the filler concentration increases, the interparticle distances are reduced, leading to the more stressed regions, 17,19,20 and it is observed from the zoomed inset in Figure 2(a) that the particle distances were even less than the size of the nanofiller when increased in the filler concentration. The particle agglomeration results differently, and this has also been reported by Paul and Sindhu 19 in the early experimental studies and Beena and Jayanna 21 for the dielectric studies on piezoelectric BaTiO 3 ceramic polymer composites.…”

Section: Effect Of Filler Materialsmentioning

confidence: 98%

Effect of size and shape of nanofillers on electrostatic and thermal behavior of epoxy-based composites

Velani

Patel²

2021

Polymers and Polymer Composites

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The role of nanodielectrics in the electrical power system is becoming crucial owing to its superior properties and potential applications in the field. Yet, the materials face limited breakdown strength and thermal properties. Further, the nanodielectrics have not found a comprehensive commercial platform because of the costly manufacturing process, and characterization and testing facilities. Therefore, to reduce the involved cost, in this work, an FE (finite element) based computational technique has been implemented to visualize the effect of shape, size, and filler concentration under the application of high voltage (HV). The epoxy-based nanodielectrics have been modeled incorporating a range of different shapes and size nanofillers—Al2O3, BN, BeO, SiO2, and TiO2. The paper discusses the 2D-analysis of the modeled nanodielectric in the steady-state electrostatic fields and thermal domains. It shows the insights of the nanofillers’ choice to ensure a perfect blend of electrical and thermal properties. The epoxy with square-shaped BeO fillers showed a rise in the electric field of nearly 1.5 times than unfilled neat epoxy, which indicates a significant surge in thermal conductivity at specific filler loading.

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Dielectric performance of high permitivity nanocomposites: impact of polystyrene grafting on BaTiO₃ and TiO₂

Cited by 38 publications

References 33 publications

Challenges and Opportunities of Polymer Nanodielectrics for Capacitive Energy Storage

Challenges and Opportunities of Polymer Nanodielectrics for Capacitive Energy Storage

The search for enhanced dielectric strength of polymer‐based dielectrics: A focused review on polymer nanocomposites

Effect of size and shape of nanofillers on electrostatic and thermal behavior of epoxy-based composites

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Dielectric performance of high permitivity nanocomposites: impact of polystyrene grafting on BaTiO3 and TiO2

Cited by 38 publications

References 33 publications

Challenges and Opportunities of Polymer Nanodielectrics for Capacitive Energy Storage

Challenges and Opportunities of Polymer Nanodielectrics for Capacitive Energy Storage

The search for enhanced dielectric strength of polymer‐based dielectrics: A focused review on polymer nanocomposites

Effect of size and shape of nanofillers on electrostatic and thermal behavior of epoxy-based composites

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Dielectric performance of high permitivity nanocomposites: impact of polystyrene grafting on BaTiO₃ and TiO₂