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Issue 38, 2013
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Dielectric behaviors and high energy storage density of nanocomposites with core–shell BaTiO3@TiO2 in poly(vinylidene fluoride-hexafluoropropylene)

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Abstract

Nanocomposites comprising a P(VDF-HFP) polymer matrix and core–shell structured nanoparticle fillers were prepared, in which a crystalline, ultrathin TiO2 shell layer encapsulates BaTiO3 nanoparticles. A large dielectric constant (>110) was obtained, which was unexpectedly more than 3 times higher than that of the nanocomposite without the TiO2 shell layer. The significant improvement in electric polarization is attributed to the highly interactive interfaces among the multiple dielectric materials with the introduction of the intermediate TiO2 layer, which also improves the breakdown field (>340 MV m−1). Thus a resulting dielectric energy density of 12.2 J cm−3 is achieved, among the highest energy densities for polymer–ceramic composites.

Graphical abstract: Dielectric behaviors and high energy storage density of nanocomposites with core–shell BaTiO3@TiO2 in poly(vinylidene fluoride-hexafluoropropylene)

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Publication details

The article was received on 30 May 2013, accepted on 08 Aug 2013 and first published on 08 Aug 2013


Article type: Paper
DOI: 10.1039/C3CP52267A
Phys. Chem. Chem. Phys., 2013,15, 16242-16248

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    Dielectric behaviors and high energy storage density of nanocomposites with core–shell BaTiO3@TiO2 in poly(vinylidene fluoride-hexafluoropropylene)

    M. Rahimabady, M. S. Mirshekarloo, K. Yao and L. Lu, Phys. Chem. Chem. Phys., 2013, 15, 16242
    DOI: 10.1039/C3CP52267A

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