Enhanced energy storage in polyvinylidenefluoride (PVDF) + BaZrO3 electroactive nanocomposites

Sagar, Rohan; Gaur, Samanvaya Singh; Grace, Andrews Nirmala; Gaur, M. S.

doi:10.1007/s11581-018-2436-3

Cited by 7 publications

(1 citation statement)

References 63 publications

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“…Especially, polymer film dielectric capacitors have been rapidly developed due to their high charging and discharging speed and high‐power density, and so far polymer film dielectric capacitors have become an essential core component in the pulse power technology neighborhood 3 . However, pure polymer film always shows low‐material intrinsic permittivity, low‐energy storage density 4 and heat resistance. Therefore, polymer dielectric films with high‐dielectric constant, low‐dielectric loss, and high‐temperature resistance are urgently needed 5–8 …”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of polyimide dielectric nanocomposites containing polyvinylpyrrolidone chemically functionalized barium titanate by in‐situ synthesis compounding

Yang

Zhang

et al. 2022

J of Applied Polymer Sci

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This work employed polymer active agent polyvinylpyrrolidone (PVP) treated barium titanate (BT) nanoparticles (PVP@BT) as functional nanofillers to fill polyimide (PI) matrix to fabricate PI nanocomposite films. The microstructure, dielectric properties, and heat resistance of PI, PI/BT, and PI/PVP@BT dielectric nanocomposite films were investigated. Fourier transform infrared spectrometer (FTIR) indicated that PVP has been successfully coated on the surface of BT nanoparticles. Due to the enhanced aggregation of monomers on the PVP@BT nanoparticles, higher molecular weight and viscosity of PI/PVP@BT nanocomposite films were achieved. Compared with PI/BT nanocomposite films, the dispersion of PVP@BT nanoparticles in PI/PVP@BT nanocomposite films was better, as verified by field emission scanning electron microscope and high‐resolution transmission electron microscopy. Filling a small amount of PVP@BT nanoparticles into the PI matrix improved the dielectric properties of the resultant nanocomposite films. The dielectric constant of the nanocomposite films with 10 wt% filler loading was up to 7.1 at 1000 Hz, which was 2.5 times higher than that of pure PI (2.9). PI nanocomposite film dielectric loss was generally lower than 0.015. Thermogravimetric analysis (TGA) tests verified that both pure PI and PI nanocomposite films showed excellent thermal stability. This work can be expected to provide a new strategy for designing and manufacturing PI dielectric nanocomposite films for energy storage applications.

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Section: Introductionmentioning

confidence: 99%