Abstract
The enhancement of the energy density and efficiency for polymer-based nanocomposites is advantageous for promoting their practical application in miniaturization and integration of dielectric capacitors. In this work, a class of newly designed layer-structured polymer-based nanocomposites based on BaTiO3@SiO2/PVDF dielectric layer as the central layer and BNNSs/PVDF-PMMA layers as the outer layers were prepared. By reasonably adjusting the dielectric properties of a BaTiO3@SiO2/PVDF dielectric layers and BNNSs/PVDF-PMMA insulating layers, the layer-structured nanocomposites exhibits simultaneously high discharge density of 20.1 J/cm3 and high efficiency of 76% under an electric field of 507 MV/m. A series of dielectric analyses and simulation results indicate that the appropriate dielectric differences redistribute the electric filed in the layer-structured nanocomposites, which relieves the electric field strength in the dielectric layer and enhances the electric breakdown strength of nanocomposites. This work can provide an effect strategy to design polymer-based nanocomposites with significantly energy storage performance.
| Original language | English |
|---|---|
| Article number | 106546 |
| Journal | Composites Part A: Applied Science and Manufacturing |
| Volume | 149 |
| DOIs | |
| State | Published - Oct 2021 |
Keywords
- A. Polymer-based nanocomposites (PMCs)
- A. Thin films
- B. Electrical properties
- Dielectric differences
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