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Issue 21, 2016
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High energy density of polymer nanocomposites at a low electric field induced by modulation of their topological-structure

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Abstract

Polymer nanocomposite dielectrics are of critical importance for a number of electrical and electronic applications. It is highly desirable to achieve high energy density at a low electric field. In this contribution, PVDF-based (or PVDF–TrFE–CFE based) nanocomposite films filled with BaTiO3@TiO2 nanofibers are cast from solutions. Topological-structure modulated polymer nanocomposites are assembled layer-by-layer with the as-cast films via a hot-pressing process. Modulation of the topological-structure induces substantial redistribution of the local electric field among the constituent layers, giving rise to enhanced electric polarization at a low electric field and increased breakdown strength. These synergistic effects lead to an ultrahigh energy density of ∼12.5 J cm−3 and a high discharge efficiency of ∼70% at 350 kV mm−1. High energy density at a low electric field is thus achieved by modulating the topological structure of polymer dielectric nanocomposites, which is of critical significance to make dielectric nanocomposites viable energy storage devices.

Graphical abstract: High energy density of polymer nanocomposites at a low electric field induced by modulation of their topological-structure

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Supplementary files

Article information


Submitted
16 Mar 2016
Accepted
28 Apr 2016
First published
28 Apr 2016

J. Mater. Chem. A, 2016,4, 8359-8365
Article type
Paper

High energy density of polymer nanocomposites at a low electric field induced by modulation of their topological-structure

Y. Shen, D. Shen, X. Zhang, J. Jiang, Z. Dan, Y. Song, Y. Lin, M. Li and C. Nan, J. Mater. Chem. A, 2016, 4, 8359
DOI: 10.1039/C6TA02186G

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