Recent advances in dispersion and alignment of fillers in PVDF-based composites for high-performance dielectric energy storage

Zhou, Jing; Hou, Dajun; Cheng, Sha; Zhang, Jisong; Chen, Wen; Zhou, Ling; Zhang, Pengchao

doi:10.1016/j.mtener.2022.101208

Cited by 31 publications

(20 citation statements)

References 170 publications

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“…At the critical concentration, that is, the percolation threshold, the conductivity of the composite increases sharply. Typically, at the percolation threshold, graphene forms a continuous network within the polymer matrix; further increases in loading have little effect on reducing resistivity. , This finding is confirmed by the fact that after 12 repeated impregnation–drying cycles, the sheet resistance of the composites remains essentially unchanged.…”

Section: Resultsmentioning

confidence: 82%

Magnetic Field-Induced Aligned Graphene/Cellulose Conductive Composites for Electroluminescent Devices

Zhi,

Xu,

et al. 2023

ACS Appl. Nano Mater.

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Graphene is a promising reinforcement for fiber composite materials in flexible wearable applications because of its exceptional conductivity. Researchers have focused on bridging the gap between the intrinsic conductivity of graphene and the macroscopic performance of composite materials. The anisotropy of 2D nanomaterials indicates that their orientation and distribution are crucial factors in determining the macroscopic performance of thin films and bulk materials. Various technologies developed to control the formation of microstructures include electric and magnetic field methods, hot pressing, centrifugation, and freeze-drying. In this study, we prepared flexible graphene/cellulose composite film materials and used magnetic fields to regulate the orientation and distribution of graphene within cellulose paper. Results show that the grid structure of graphene arranged on the composite material produced interconnected conductive paths and reduced the graphene permeation threshold. By giving the conductive layer a higher dielectric constant, we prevented its breakdown as a conductive film. Electroluminescent devices were constructed using graphene/cellulose flexible composite materials and achieved an effective improvement in luminescence performance. Furthermore, directional luminescence was obtained through a microstructure design. This study provides a feasible path for using 2D nanomaterials in high-performance, flexible wearable devices.

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Section: Resultsmentioning

confidence: 82%

Magnetic Field-Induced Aligned Graphene/Cellulose Conductive Composites for Electroluminescent Devices

Zhi,

Xu,

et al. 2023

ACS Appl. Nano Mater.

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“…High dielectric constants can be achieved with ceramic materials, particularly with BaTiO 3 . However, the relatively low electric breakdown strength and processing difficulties of inorganic materials hinder their usage in many electronic devices. , In this regard, high electric breakdown strength can be achieved by merging with polymers, which meanwhile possess advantages of low dielectric loss, easy processing, and low cost. ,, However, even for ferroelectric fluorinated polymers (e.g., PVDF and VDF copolymers), which exhibit the highest dielectric constants (ε ≈ 10 at 1 kHz) among numerous polymers, ,,, their blends with ceramic materials often afford poor performance as limited by processing techniques. The high surface energy and large specific surface area of ceramic nanoparticles cause aggregation in the polymer matrix, giving rise to electron conduction with considerable dielectric loss, poor breakdown strength, and other deteriorated electrical properties.…”

Section: Applicationsmentioning

confidence: 99%

Fluoropolymer Nanoparticles Synthesized via Reversible-Deactivation Radical Polymerizations and Their Applications

Zhang,

Chen,

Ameduri

et al. 2023

Chem. Rev.

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Fluorinated polymeric nanoparticles (FPNPs) combine unique properties of fluorocarbon and polymeric nanoparticles, which has stimulated massive interest for decades. However, fluoropolymers are not readily available from nature, resulting in synthetic developments to obtain FPNPs via free radical polymerizations. Recently, while increasing cutting-edge directions demand tailored FPNPs, such materials have been difficult to access via conventional approaches. Reversible-deactivation radical polymerizations (RDRPs) are powerful methods to afford well-defined polymers. Researchers have applied RDRPs to the fabrication of FPNPs, enabling the construction of particles with improved complexity in terms of structure, composition, morphology, and functionality. Related examples can be classified into three categories. First, well-defined fluoropolymers synthesized via RDRPs have been utilized as precursors to form FPNPs through self-folding and solution self-assembly. Second, thermally and photoinitiated RDRPs have been explored to realize in situ preparations of FPNPs with varied morphologies via polymerizationinduced self-assembly and cross-linking copolymerization. Third, grafting from inorganic nanoparticles has been investigated based on RDRPs. Importantly, those advancements have promoted studies toward promising applications, including magnetic resonance imaging, biomedical delivery, energy storage, adsorption of perfluorinated alkyl substances, photosensitizers, and so on. This Review should present useful knowledge to researchers in polymer science and nanomaterials and inspire innovative ideas for the synthesis and applications of FPNPs.

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“…22 On one hand, it is commonly agreed that one-dimensional (1D) ceramic nanowires have significant advantages in improving the energy storage density of polymer matrix composites at low concentrations, since the dispersion, size, and shape of fillers have a great impact on the dielectric properties. 23 Compared to the 0D nanoparticles, 1D nanofillers have a much lower surface area and larger aspect ratio, which will produce enhanced scattering centers to restrict charge movement and boost route tortuosity during the process of electrical treeing under the applied electric field, further enhancing the E b and the energy storage performance. 24 Additionally, due to the large aspect ratio of the 1D nanowires, dielectric nanocomposites with 1D nanoparticles have far lower percolation than 0D materials/polymer composites.…”

Section: Introductionmentioning

confidence: 99%

Reduced Polyaniline-Modified NaNbO₃ Nanowire/Polyetherimide Nanocomposites for Dielectric Capacitors with Enhanced Dielectric Properties and High Thermal Stability

Lin

You

et al. 2023

ACS Appl. Nano Mater.

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The development of high-performance antiferroelectric ceramics/polymeric materials with great thermal stability has attracted considerable interest due to their extensive use in efficient power sources and electronic devices. Nevertheless, the high energy storage density and thermal stability of dielectrics are seriously restricted due to their poor processibility and weakened breakdown strength (E b ). To resolve these tough issues, it would be highly effective and feasible if an organically modified highaspect-ratio one-dimensional (1D) antiferroelectric ceramic can be employed. Specifically, the 1D nanofiller can extend the breakdown path and improve the local electric field distribution while the organic modification endows dielectrics with enhanced interface polarization and improved compatibility, thus yielding high energy storage density. Herein, a series of high-aspect-ratio 1D NaNbO 3 nanofiller with organic insulating reduced polyaniline (R-PANI) layer are synthesized by the oxidative polymerization and then introduced into the polyetherimide (PEI) matrix. The prepared NaNbO 3 @R-PANI/PEI nanocomposites possess enhanced dielectric constant up to 9.8 as well as ultralow dielectric loss (0.009) while maintaining the high energy density of 2.46 J/cm 3 (1.4 times of that for pure PEI) and high efficiency of 82.6% at 200 MV/m at a small loading of 3 vol %. Depending on the unique structure of the coated R-PANI, the 3 vol % NaNbO 3 @R-PANI/PEI increased the energy density up to 4.4 J/cm 3 and maintained high efficiency of 70.9% at 200 MV/m under 150 °C, therefore making it a potential candidate for polymeric dielectric materials used in extreme environments.

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Recent advances in dispersion and alignment of fillers in PVDF-based composites for high-performance dielectric energy storage

Cited by 31 publications

References 170 publications

Magnetic Field-Induced Aligned Graphene/Cellulose Conductive Composites for Electroluminescent Devices

Magnetic Field-Induced Aligned Graphene/Cellulose Conductive Composites for Electroluminescent Devices

Fluoropolymer Nanoparticles Synthesized via Reversible-Deactivation Radical Polymerizations and Their Applications

Reduced Polyaniline-Modified NaNbO₃ Nanowire/Polyetherimide Nanocomposites for Dielectric Capacitors with Enhanced Dielectric Properties and High Thermal Stability

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Recent advances in dispersion and alignment of fillers in PVDF-based composites for high-performance dielectric energy storage

Cited by 31 publications

References 170 publications

Magnetic Field-Induced Aligned Graphene/Cellulose Conductive Composites for Electroluminescent Devices

Magnetic Field-Induced Aligned Graphene/Cellulose Conductive Composites for Electroluminescent Devices

Fluoropolymer Nanoparticles Synthesized via Reversible-Deactivation Radical Polymerizations and Their Applications

Reduced Polyaniline-Modified NaNbO3 Nanowire/Polyetherimide Nanocomposites for Dielectric Capacitors with Enhanced Dielectric Properties and High Thermal Stability

Contact Info

Product

Resources

About

Reduced Polyaniline-Modified NaNbO₃ Nanowire/Polyetherimide Nanocomposites for Dielectric Capacitors with Enhanced Dielectric Properties and High Thermal Stability