Journal ArticleDOI
Novel Ferroelectric Polymers for High Energy Density and Low Loss Dielectrics
TLDR
In this paper, orientational polarization in polar polymers can be utilized for high energy density and low loss dielectrics, which can be used for next-generation dielectric capacitors for pulsed power and power conditioning applications.Abstract:
The state-of-the-art polymer dielectrics have been limited to nonpolar polymers with relatively low energy density but ultralow dielectric losses for the past decades. With the fast development of power electronics in pulsed power and power conditioning applications, there is a need for next-generation dielectric capacitors in areas of high energy density/low loss and/or high temperature/low loss polymer dielectrics. Given limitations in further enhancing atomic and electronic polarizations for polymers, this Perspective focuses on a fundamental question: Can orientational polarization in polar polymers be utilized for high energy density and low loss dielectrics? Existing experimental and theoretical results have suggested the following perspectives. For amorphous polar polymers, high energy density and low loss can be achieved below their glass transition temperatures. For liquid crystalline side-chain polymers, dipole mobility is so high that they saturate at relatively low electric fields, and only li...read more
Citations
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Journal ArticleDOI
Recent Progress on Ferroelectric Polymer-Based Nanocomposites for High Energy Density Capacitors: Synthesis, Dielectric Properties, and Future Aspects.
TL;DR: This Review presents a comprehensive review of the use of ferroelectric polymers, especially PVDF and PVDF-based copolymers/blends as potential components in dielectric nanocomposite materials for high energy density capacitor applications.
Journal ArticleDOI
A review on the dielectric materials for high energy-storage application
TL;DR: In this paper, the state-of-the-art progress on electric energy-storage performance in dielectric materials is summarized, and some general future prospects are also provided from the existed theoretical and experimental results in this work.
Journal ArticleDOI
Core-shell structured high-k polymer nanocomposites for energy storage and dielectric applications.
Xingyi Huang,Pingkai Jiang +1 more
TL;DR: Recent and in-progress state-of-the-art advancements in the application of core-shell nanoarchitecture strategies to design and prepare high-k polymer nanocomposites are summarized.
Journal ArticleDOI
Exploring Strategies for High Dielectric Constant and Low Loss Polymer Dielectrics.
TL;DR: In this paper, the dipolar relaxation peak can be pushed to above the gigahertz range for high dielectric constant and low loss polymer dielectrics, and the advantages and disadvantages of different types of polarization are explored.
Journal ArticleDOI
Fluoro-Polymer@BaTiO3 Hybrid Nanoparticles Prepared via RAFT Polymerization: Toward Ferroelectric Polymer Nanocomposites with High Dielectric Constant and Low Dielectric Loss for Energy Storage Application
TL;DR: In this paper, the authors report a novel strategy to improve the interface between the high dielectric constant nanoparticles (i.e., BaTiO3) and ferroelectric polymer.
References
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BookDOI
Broadband dielectric spectroscopy
TL;DR: Kremer et al. as mentioned in this paper proposed the theory of dielectric relaxation and analyzed the spectral properties of polymeric systems using NMR spectroscopy and NNMR spectra.
Journal ArticleDOI
General observation of n-type field-effect behaviour in organic semiconductors
Lay-Lay Chua,Lay-Lay Chua,Jana Zaumseil,Jui Fen Chang,Eric C.W. Ou,Peter K. H. Ho,Peter K. H. Ho,Henning Sirringhaus,Richard H. Friend +8 more
TL;DR: It is demonstrated that the use of an appropriate hydroxyl-free gate dielectric—such as a divinyltetramethylsiloxane-bis(benzocyclobutene) derivative (BCB; ref. 6)—can yield n-channel FET conduction in most conjugated polymers, revealing that electrons are considerably more mobile in these materials than previously thought.
Journal ArticleDOI
A Dielectric Polymer with High Electric Energy Density and Fast Discharge Speed
TL;DR: It is demonstrated that a very high energy density with fast discharge speed and low loss can be obtained in defect-modified poly(vinylidene fluoride) polymers by combining nonpolar and polar molecular structural changes of the polymer with the proper dielectric constants.
Journal ArticleDOI
Recent progress in relaxor ferroelectrics with perovskite structure
Alexei A. Bokov,Zuo-Guang Ye +1 more
TL;DR: In this article, the lattice dynamics and the peculiar dielectric relaxation in relaxors are discussed, and theoretical models for the mechanisms of PNR formation and freezing into nonergodic glassy state are also presented.
Journal ArticleDOI
Giant Electrostriction and Relaxor Ferroelectric Behavior in Electron-Irradiated Poly(vinylidene fluoride-trifluoroethylene) Copolymer
TL;DR: An exceptionally high electrostrictive response was observed in electron-irradiated poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] copolymer, suggesting that the electron irradiation breaks up the coherent polarization domain in normal ferroelectric P( VDF- TrFE)Copolymer into nanopolar regions that transform the material into a relaxor ferroElectric.