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All Polymer Dielectric Films for Achieving High Energy Density Film Capacitors by Blending Poly(Vinylidene Fluoride-Trifluoroethylene-Chlorofluoroethylene) with Aromatic Polythiourea
- Source :
- Nanoscale Research Letters, Nanoscale Research Letters, Vol 15, Iss 1, Pp 1-9 (2020)
- Publication Year :
- 2019
-
Abstract
- Construct dielectric films with high energy density and efficiency are the key factor to fabricate high-performance dielectric film capacitors. In this paper, an all organic composite film was constructed based on high dielectric polymer and linear dielectric polymer. After the optimized polycondensation reaction of a linear dielectric polymer aromatic polythiourea (ArPTU), the proper molecular weight ArPTU was obtained, which was introduced into poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) (PVDF-TrFE-CFE) terpolymer for a composite dielectrics. The results indicate that the addition of ArPTU molecules reduces the dielectric loss and improves the breakdown field strength of the PVDF-TrFE-CFE effectively. For the PVDF-TrFE-CFE/ArPTU (90/10) composite film, the maximum energy density about 22.06 J/cm3 at 407.57 MV/m was achieved, and high discharge efficiency about 72% was presented. This composite material can be casted on flexible substrate easily, and PVDF-TrFE-CFE/ArPTU organic composite films having high energy density, high breakdown field strength, low dielectric loss, and higher discharge efficiency are obtained. This is an unreported exploration about high energy density organic dielectric films based on PVDF-TrFE-CFE matrix and linear polymer dielectrics, and the findings of this research can provide a simple and scalable method for producing flexible high energy density materials for energy storage devices.
- Subjects :
- Materials science
Composite films
Composite number
Nanochemistry
02 engineering and technology
Substrate (electronics)
Dielectric
010402 general chemistry
01 natural sciences
Molecular weight
Energy storage
lcsh:TA401-492
General Materials Science
Composite material
Poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene)
chemistry.chemical_classification
Nano Express
Polymer
021001 nanoscience & nanotechnology
Condensed Matter Physics
0104 chemical sciences
Aromatic polythiourea
Film capacitor
chemistry
Dielectric loss
lcsh:Materials of engineering and construction. Mechanics of materials
Energy storage density
0210 nano-technology
Subjects
Details
- ISSN :
- 19317573
- Volume :
- 15
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Nanoscale research letters
- Accession number :
- edsair.doi.dedup.....e22bb72c2d2bae18cd102da922b475ec