Controlling dielectric performance of composites via Mulberry-like core–shell structured CCTO@PANI patricles based on Coulomb-blockade effect

Guo, Dandan; Ruan, Mengnan; Nie, Weixing; Guo, Zhengang; Liu, Zhifeng

doi:10.1007/s10965-023-03547-3

Cited by 2 publications

(1 citation statement)

References 53 publications

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“…These composites play a key role in a broad range of areas such as portable electronics, high‐power microwaves, the microelectronic industry, sensors, and other energy storage devices. [ 1–5 ] In recent times, the fabrication of these nanocomposites has been made to develop materials with good electrical properties by incorporating ceramic nanoparticles into the polymer matrix. In this regard, the conventional strategy involves the selection of polymers with high dielectric breakdown strength, simple processing, and high mechanical strength.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Dielectric and Electric Properties of ZnFe₂O₄‐Poly(Vinylidene Fluoride) Composites by Employing Surface Hydroxylated ZnFe₂O₄ Nanoparticles

Sethy,

Chakroborty,

Moharana

et al. 2024

Macromolecular Symposia

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A facile solvent casting technique has been reported in the fabrication of surface hydroxylated ZnFe2O4 (h‐ZFO) nanoparticles (NPs) filled with poly(vinylidene fluoride) (PVDF) as a matrix. The h‐ZFO filler particles are synthesized from neat ZnFe2O4. The dielectric and electric performance of polymer‐based composites is much related to the interface binding between filler particles and polymer matrix. In this work, the surface alternation technique employed a new path is developed to improve the compatibility between ZFO particles and the PVDF matrix. These PVDF‐ZFO composites were studied by X‐ray diffractometer (XRD), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). The h‐ZFO‐PVDF and ZFO‐PVDF composites are carefully analyzed by dielectric and electric properties by a wide range of frequencies. However, the morphological analysis exhibits uniform dispersion of the h‐ZFO NPs in the PVDF matrix. The h‐ZFO‐PVDF composites have a dielectric constant of about 35 for 1.5 wt.% of filler contents. Moreover, the h‐ZFO‐PVDF composites have lower dielectric loss than PVDF‐ZFO composites. It is suggested that the strong interaction between h‐ZFO filler particles and the PVDF matrix is the main reason for the improvement of dielectric properties. The outcomes of these methods have great potential for making high dielectric constants and relatively suppressed loss PVDF‐ZFO composites for advanced practical applications.

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Section: Introductionmentioning

confidence: 99%

Enhanced Dielectric and Electric Properties of ZnFe₂O₄‐Poly(Vinylidene Fluoride) Composites by Employing Surface Hydroxylated ZnFe₂O₄ Nanoparticles

Sethy,

Chakroborty,

Moharana

et al. 2024

Macromolecular Symposia

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Achieving Significantly Boosted Dielectric Energy Density of Polymer Film via Introducing a Bumpy Gold/Polymethylsilsesquioxane Granular Blocking Layer

Chang,

Shi,

Liu

et al. 2024

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Polymer dielectrics are the key materials for pulsed energy storage systems, but their low energy densities greatly restrict the applications in integrated electronic devices. Herein, a unique bumpy granular interlayer consisting of gold nanoparticles (Au NPs) and polymethyksesquioxane (PMSQ) microspheres is introduced into a poly(vinylidene fluoride) (PVDF) film, forming trilayered PVDF‐Au/PMSQ‐PVDF films. Interestingly, the Au/PMSQ interlayer arouses a dielectric enhancement of 47% and an ultrahigh breakdown strength of 704 MV m−1, which reaches 153% of pure PVDF. It is revealed that the greatly enhanced breakdown strength originated from the Coulomb‐blockade effect of Au NPs and the excellent insulating properties of PMSQ microspheres with a special molecular‐scale organic–inorganic hybrid structure. Benefiting from the concurrently enhanced dielectric and breakdown performances, an outstanding energy density of 22.42 J cm−3 with an efficiency of 67.1%, which reaches 249% of that of the pure PVDF, is achieved. It is further confirmed that this design strategy is also applicable to linear dielectric polymer polyethyleneimine. The composites exhibit an energy density of 8.91 J cm−3 with a high efficiency of ≈95%. This work offers a novel and efficient strategy for concurrently enhancing the dielectric and breakdown performances of polymers toward pulsed power applications.

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Controlling dielectric performance of composites via Mulberry-like core–shell structured CCTO@PANI patricles based on Coulomb-blockade effect

Cited by 2 publications

References 53 publications

Enhanced Dielectric and Electric Properties of ZnFe₂O₄‐Poly(Vinylidene Fluoride) Composites by Employing Surface Hydroxylated ZnFe₂O₄ Nanoparticles

Enhanced Dielectric and Electric Properties of ZnFe₂O₄‐Poly(Vinylidene Fluoride) Composites by Employing Surface Hydroxylated ZnFe₂O₄ Nanoparticles

Achieving Significantly Boosted Dielectric Energy Density of Polymer Film via Introducing a Bumpy Gold/Polymethylsilsesquioxane Granular Blocking Layer

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Controlling dielectric performance of composites via Mulberry-like core–shell structured CCTO@PANI patricles based on Coulomb-blockade effect

Cited by 2 publications

References 53 publications

Enhanced Dielectric and Electric Properties of ZnFe2O4‐Poly(Vinylidene Fluoride) Composites by Employing Surface Hydroxylated ZnFe2O4 Nanoparticles

Enhanced Dielectric and Electric Properties of ZnFe2O4‐Poly(Vinylidene Fluoride) Composites by Employing Surface Hydroxylated ZnFe2O4 Nanoparticles

Achieving Significantly Boosted Dielectric Energy Density of Polymer Film via Introducing a Bumpy Gold/Polymethylsilsesquioxane Granular Blocking Layer

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Product

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Enhanced Dielectric and Electric Properties of ZnFe₂O₄‐Poly(Vinylidene Fluoride) Composites by Employing Surface Hydroxylated ZnFe₂O₄ Nanoparticles

Enhanced Dielectric and Electric Properties of ZnFe₂O₄‐Poly(Vinylidene Fluoride) Composites by Employing Surface Hydroxylated ZnFe₂O₄ Nanoparticles