Journal of Materials Science

, Volume 55, Issue 6, pp 2503–2515 | Cite as

Enhanced energy density in poly(vinylidene fluoride) nanocomposites with dopamine-modified BNT nanoparticles

  • Jianan Li
  • Guanliang Chen
  • Xiujuan LinEmail author
  • Shifeng Huang
  • Xin Cheng
Energy materials


Dielectric nanocomposites have attracted extensive attention since the potential application in the field of energy storage. Nevertheless, it is still a challenge to fabricate dielectric nanocomposites with high discharged energy density. Herein, lead-free bismuth sodium titanate (BNT) particles are used as filler in nanocomposite due to their outstanding dielectric properties. In this paper, BNT nanoparticles decorated by dopamine were employed to fabricate BNT@Dopa/poly(vinylidene fluoride) (PVDF) nanocomposites. Dielectric properties and energy storage performance of nanocomposites with BNT nanoparticles enhanced significantly. The maximum dielectric constant (εr) of nanocomposites with BNT@Dopa nanoparticles was 14.15 at the frequency of 1 kHz. The discharged energy density (Udis) of nanocomposites with 3 vol% BNT@Dopa nanoparticles reached 13.09 J/cm3 at 430 kV/mm. The energy efficiency (η) of nanocomposites at 40 °C remained 53.62% at the electric field of 350 kV/mm. The nanocomposite with BNT@Dopa nanoparticles performed excellent fatigue endurance after 106 cycles. These results offer a practicable way to fabricate nanocomposites with high energy density.



This work was financially supported by the Natural Science Foundation of China (Nos. 51702120, U1806221, 51632003), Shandong provincial key research and development plan (Grant No. 2016JMRH0103) and Project from University of Jinan (No. 140200322).


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Shandong Provincial Key Laboratory of Preparation and Measurement of Building MaterialsUniversity of JinanJinanPeople’s Republic of China

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