Enhancing thermal stability of P(VDF-HFP) based nanocomposites with core-shell fillers for energy storage applications
Source abstract
Abstract
Abstract Improving thermal stability of the ceramic-polymer based nano-composited electrostatic capacitors is the key element to their practical applications in harsh environment. In this paper, Fe3O4 @BaTiO3 particles with thermal conductive core and high-k shell were prepared and used as fillers to improve the thermal stability and high temperature energy storage density of poly-(vinylidene fluoride-co-hexafluoropropylene) (P(VDF-HFP)) based composited films. Compared to the pure polymer, the films with 10 wt% fillers showed enhanced temperature stability at the range of 40–120 °C. The high-temperature (120 °C) average breakdown strength reached at 1615 kV/cm with ~170% higher than the pure P(VDF-HFP) (970 kV/cm). The discharged energy storage density (120 °C) was 1.68 J/cm3 (1750 kV/cm), which was enhanced up to 1150% comparing to that of pure P(VDF-HFP) (0.146 J/cm3 at 1300 kV/cm). The increased thermal conductivity and the Internal Barrier Layer Capacitor (IBLC) effects at the conductive-insulating interfaces contribute to the enhanced features. The results in the present work explored an effective way to prepare high temperature dielectric nanocomposites for harsh applications in energy storage field.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Dielectric materials and actuators · Advanced Sensor and Energy Harvesting Materials · High voltage insulation and dielectric phenomena
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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