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Identification of frequency regimes for short and long range mobility of charge carriers in GO/MnFe2O4/PPy nanocomposites
- Source :
- Synthetic Metals. 263:116336
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- The physico-chemical properties of polymer ceramic composites highly depend upon the nature of ceramic, polymer and their interface. Among other interesting features, they have potential for flexible electronics and energy storage devices. Especially, graphene based polymer ceramic composites are unique for their high dielectric characteristics. In this regard, we synthesized a three constituent novel nanocomposite with polymer matrix to check their potential for energy storage applications. Here in, the polypyrrole has been exquisitely decorated with graphene oxide and manganese ferrite nanoparticles with their different concentrations. The development of spherical grains and their transformation into rod like morphology with a significant change in their dimension is noticed. The weight percentage of all elements according to their stoichiometric formula and the finger prints of different constituents in the form of their functional groups are also identified before their dielectric and ferroelectric analyses. The highest value of dielectric constant (121449) has been noticed at 100 Hz frequency, which reduced to 1066 at 1 MHz. The dielectric loss was also quite high at lower frequency which decreased to 1.2 at same high value of frequency (1 MHz). The calculations for recoverable energy density and energy loss density are performed using PE hysteresis loops and the highest value of recoverable energy density is recorded as 4.7 × 10−8 mJ/cm3. Thus, high values of dielectric constant and low dielectric loss of these nanocomposites make them attractive dielectric material in electrical appliances for capacitive applications.
- Subjects :
- Materials science
Nanoparticle
02 engineering and technology
Dielectric
010402 general chemistry
01 natural sciences
law.invention
law
Materials Chemistry
Ceramic
Composite material
chemistry.chemical_classification
Nanocomposite
Graphene
Mechanical Engineering
Metals and Alloys
Polymer
021001 nanoscience & nanotechnology
Condensed Matter Physics
0104 chemical sciences
Electronic, Optical and Magnetic Materials
Hysteresis
chemistry
Mechanics of Materials
visual_art
visual_art.visual_art_medium
Dielectric loss
0210 nano-technology
Subjects
Details
- ISSN :
- 03796779
- Volume :
- 263
- Database :
- OpenAIRE
- Journal :
- Synthetic Metals
- Accession number :
- edsair.doi...........e4a459642397b1620f8c5d2992fa5032