Volume 142, Issue 15 e56729
RESEARCH ARTICLE

Poly(Vinylidene Fluoride-co-Hexafluoropropylene) Matrix Nanocomposites Reinforced With Various Types of BaTiO3 Nanoparticles for Flexible Energy Storage Applications

Levent Koroglu

Corresponding Author

Levent Koroglu

Department of Materials Science and Engineering, Eskisehir Technical University, Eskisehir, Turkey

BCMaterials, Basque Center for Materials Applications and Nanostructures, UPV/EHU Science Park, Leioa, Spain

Correspondence:

Levent Koroglu ([email protected])

Carmen R. Tubio ([email protected])

Contribution: Conceptualization (equal), ​Investigation (lead), Visualization (lead), Writing - original draft (lead)

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Carmen R. Tubio

Corresponding Author

Carmen R. Tubio

BCMaterials, Basque Center for Materials Applications and Nanostructures, UPV/EHU Science Park, Leioa, Spain

Correspondence:

Levent Koroglu ([email protected])

Carmen R. Tubio ([email protected])

Contribution: Conceptualization (equal), ​Investigation (equal), Methodology (lead), Writing - review & editing (equal)

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Carlos M. Costa

Carlos M. Costa

Physics Centre of Minho and Porto Universities (CF-UM-UP) and Laboratory of Physics for Materials and Emergent Technologies (LapMET), University of Minho, Braga, Portugal

Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Braga, Portugal

Contribution: Funding acquisition (equal), ​Investigation (equal), Writing - review & editing (equal)

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Erhan Ayas

Erhan Ayas

Department of Materials Science and Engineering, Eskisehir Technical University, Eskisehir, Turkey

Contribution: Supervision (equal), Writing - review & editing (equal)

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Senentxu Lanceros-Mendez

Senentxu Lanceros-Mendez

BCMaterials, Basque Center for Materials Applications and Nanostructures, UPV/EHU Science Park, Leioa, Spain

Physics Centre of Minho and Porto Universities (CF-UM-UP) and Laboratory of Physics for Materials and Emergent Technologies (LapMET), University of Minho, Braga, Portugal

IKERBASQUE Basque Foundation for Science, Bilbao, Spain

Contribution: Funding acquisition (equal), Supervision (equal), Writing - review & editing (equal)

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Nuran Ay

Nuran Ay

Department of Materials Science and Engineering, Eskisehir Technical University, Eskisehir, Turkey

Contribution: Funding acquisition (equal), Supervision (equal), Writing - review & editing (equal)

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First published: 17 January 2025

Funding: This work was supported by Eskisehir Teknik Universitesi, 22DRP206. Fundao para a Cincia e Tecnologia, UIDB/04650/2020, UID/FIS/04650/2020. Eusko Jaurlaritza, ELKARTEK.

ABSTRACT

Poly(vinylidene fluoride-co-hexafluoropropylene), (PVDF-HFP), matrix nanocomposites have been prepared by solution casting, reinforced with BaTiO3 nanoparticles (BT NPs) and surface modified BT NPs (BT-VTS NPs) with a silane coupling agent (VTS) by 0, 5, 15, and 25 wt.%. The effects of filler content and surface modification of nanofillers on the microstructure development, phase evolution, crystallization behavior, and dielectric properties of the nanocomposites are investigated. Furthermore, the energy storage performance of BT-VTS-reinforced nanocomposites is evaluated. The surface modification of BT NPs presents some advantages: it prevents aggregation, restricts interface polarization, and keeps dielectric loss of the nanocomposites low as the relative permittivities rise with filler content. 25% BT-VTS-reinforced nanocomposites with a β-phase fraction of 45% and a crystallinity of 14% provide a higher relative permittivity (22. at 1 kHz) than that of the neat PVDF-HFP thin films (11). Moreover, they present a low loss tangent (0.043) as the neat thin films (0.042). 25% BT-VTS/PVDF-HFP nanocomposites demonstrate a discharged energy density of 4.8 J cm−3 at 220 MV m−1 with a charge–discharge efficiency of 26%. Consequently, the energy density of the neat PVDF-HFP thin films (3.4 J cm−3 at 238 MV m−1) is improved by 40% after the addition of 25% BT-VTS NPs.

Conflicts of Interest

The authors declare no conflicts of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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