Enhanced energy density in poly(vinylidene fluoride) nanocomposites with dopamine-modified BNT nanoparticles
Source abstract
Abstract
Dielectric nanocomposites have attracted extensive attention since the potential application in the field of energy storage. Nevertheless, it is still a challenge to fabricate dielectric nanocomposites with high discharged energy density. Herein, lead-free bismuth sodium titanate (BNT) particles are used as filler in nanocomposite due to their outstanding dielectric properties. In this paper, BNT nanoparticles decorated by dopamine were employed to fabricate BNT@Dopa/poly(vinylidene fluoride) (PVDF) nanocomposites. Dielectric properties and energy storage performance of nanocomposites with BNT nanoparticles enhanced significantly. The maximum dielectric constant (er) of nanocomposites with BNT@Dopa nanoparticles was 14.15 at the frequency of 1 kHz. The discharged energy density (Udis) of nanocomposites with 3 vol% BNT@Dopa nanoparticles reached 13.09 J/cm3 at 430 kV/mm. The energy efficiency (η) of nanocomposites at 40 °C remained 53.62% at the electric field of 350 kV/mm. The nanocomposite with BNT@Dopa nanoparticles performed excellent fatigue endurance after 106 cycles. These results offer a practicable way to fabricate nanocomposites with high energy density.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Dielectric materials and actuators · Advanced Sensor and Energy Harvesting Materials · Electromagnetic wave absorption materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (43)
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