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Journal of Materials Science

Erschienen in:

27.05.2020 | Composites & nanocomposites

Significantly enhanced energy storage in core–shell structured poly(vinylidene fluoride-co-chlorotrifluoroethylene)/BaTiO₃@polyurea nanocomposite films

verfasst von: Yujiu Zhou, Qingxia Liu, Fujia Chen, Yuetao Zhao, Song Sun, Jimin Guo, Yajie Yang, Jianhua Xu

Erschienen in: Journal of Materials Science | Ausgabe 25/2020

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Abstract

Nanocomposite polymer materials are commonly used in energy storage devices on account of the excellent dielectric performance. However, there is a long-standing contradiction between dielectric constant and breakdown strength of nanocomposite. In this study, polyurea (PUA) is designed to in situ modify BaTiO₃ (BT) nanoparticles. Based on the excellent dispersity, favorable compatibility and outstanding insulating performance of BT@PUA particles, the P(VDF-CTFE)/BT@PUA nanocomposite exhibits enhanced breakdown strength and reliability. In addition, the introduction of BT@PUA enhanced the dielectric constant to 10.72 and 35% larger than that of pure P(VDF-CTFE). As a result, the energy density of BT@PUA composite reaches 8.94 J/cm³, which is 1.65 times than P(VDF-CTFE) (5.41 J/cm³) and 4.5 times than the commercial biaxially oriented polypropylenes. Meanwhile, the quantified simulation illustrates the necessity of extremely high breakdown strength of the shell. Experiment results and simulation reveal that coating PUA is a novel and effective way to enhance energy storage performance for polymer nanocomposites with a promising broad application prospect.

Vorheriger Artikel Static and dynamic mechanical performance of short Kevlar fiber reinforced composites fabricated via direct ink writing

Nächster Artikel Facile preparation of PAN@Ag–Ag2O/TiO2 nanofibers with enhanced photocatalytic activity and reusability toward oxidation of As(III)

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Titel: Significantly enhanced energy storage in core–shell structured poly(vinylidene fluoride-co-chlorotrifluoroethylene)/BaTiO3@polyurea nanocomposite films
verfasst von: Yujiu Zhou
Qingxia Liu
Fujia Chen
Yuetao Zhao
Song Sun
Jimin Guo
Yajie Yang
Jianhua Xu
Publikationsdatum: 27.05.2020
Verlag: Springer US
Erschienen in: Journal of Materials Science / Ausgabe 25/2020
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI: https://doi.org/10.1007/s10853-020-04828-8

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