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Highly dispersive Ba(0.6)Sr(0.4)TiO(3) nanoparticles modified P(VDF-HFP)/PMMA composite films with improved energy storage density and efficiency
- Source :
- IET Nanodielectrics (2018)
- Publication Year :
- 2018
- Publisher :
- Wiley, 2018.
-
Abstract
- Polymer composite films with high energy density as well as high efficiency are promising dielectric materials in pulsed power systems. In improving the energy discharged efficiency, poly vinylidene fluoride-hexafluoropropylene [P(VDF-HFP)] film blended with 20 vol.% poly(methylmethacrylate) (PMMA), which has a much slimmer ferroelectric hysteresis loop, is employed as the polymer matrix. Highly dispersive Ba(0.6)Sr(0.4)TiO(3) (BST) nanoparticles with an average particle size of 12.1 nm are utilised to improve the polarisation of the blend film without sacrificing the dielectric strength. Uniform nanocomposite films with high flexibility and excellent energy-storage performance are obtained. Especially, due to the optimisation of both polymer matrix and fillers, the BST modified P(VDF-HFP)/PMMA blend films show improved breakdown strength and depressed energy loss, which leads to an enhanced energy density of 10.3 J/cm^3 at 378 kV/mm.
- Subjects :
- nanocomposites
nanofabrication
dielectric polarisation
particle size
polymer blends
permittivity
nanoparticles
barium compounds
filled polymers
electric breakdown
dielectric hysteresis
polymer films
electric strength
dielectric materials
strontium compounds
polymer matrix
average particle size
nanoparticles modified P(VDF-HFP)-PMMA composite films
energy storage density
pulsed power system
energy discharged efficiency
ferroelectric hysteresis loop
dielectric breakdown strength
Ba(0.6)Sr(0.4)TiO(3)
Materials of engineering and construction. Mechanics of materials
TA401-492
Subjects
Details
- Language :
- English
- ISSN :
- 25143255
- Database :
- Directory of Open Access Journals
- Journal :
- IET Nanodielectrics
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.26730fa539bf4ab8b8fb490bd49da5b7
- Document Type :
- article
- Full Text :
- https://doi.org/10.1049/iet-nde.2017.0007