Publication detail

Ultrahigh energy density and thermal stability in sandwich-structured nanocomposites with dopamine Ag BaTiO3

Marwat, MA. Ma, WG. Fan, PY. Elahi, H. Samart, C. Nan, B. Tan, H. Salamon, D. Ye, BH. Zhang, HB.

Original Title

Ultrahigh energy density and thermal stability in sandwich-structured nanocomposites with dopamine Ag BaTiO3

Type

journal article in Web of Science

Language

English

Original Abstract

The progress in advanced dielectrics by tremendously enhancing the discharge energy densities is of great importance for the current electronic power systems. Herein, we report heterogeneous sandwich-structured nanocomposites with low nanofillers content, which offered the ultrahigh discharge energy density (U-e) of 21.03 J/cm(3) at 592.1 MV/m. This energy density is the highest reported until now, with similar nanoparticle content and equivalent electric field. We used linear-type polyetherimide as the outer two layers, which offered insulation of charge injection from electrodes, reduced polymer free-volume, improved breakdown strength, and enhanced the overall thermo-mechanical stability. Besides, dopamine@Ag@BaTiO3 nanoparticles (DA@Ag@BT NPs)-modified ferroelectric-type polyvinylidene fluoride is employed as the middle layer for rendering higher polarizability and additionally increased breakdown strength due to well-known Coulomb blockade effect. Finite element simulations showed reduced local electric field in the outer, as well as middle layer matrixes, indicating higher breakdown strength and consequently higher energy storage prospects of heterogeneous sandwich -structured nanocomposites. The energy storage results at high temperatures demonstrated its significant thermal stability until 170 degrees C. Overall, this contribution not only paves the new way for developing industrially viable low nanofillers-concentrated flexible dielectric films but also provides the insight of polarization mechanism and electric breakdown in heterogeneous sandwich-structured dielectric materials.

Keywords

Flexible energy storage; Nanocomposite dielectrics; Sandwich structure; Breakdown strength; Energy density

Authors

Marwat, MA. ; Ma, WG.; Fan, PY.; Elahi, H.; Samart, C.; Nan, B.; Tan, H.; Salamon, D.; Ye, BH.; Zhang, HB.

Released

1. 10. 2020

Publisher

ELSEVIER

Location

AMSTERDAM

ISBN

2405-8297

Periodical

Energy Storage Materials

Year of study

31

Number

1

State

Kingdom of the Netherlands

Pages from

492

Pages to

504

Pages count

13

URL

https://www.sciencedirect.com/science/article/pii/S240582972030252X?via%3Dihub

BibTex

@article{BUT167494,
  author="Marwat, MA. and Ma, WG. and Fan, PY. and Elahi, H. and Samart, C. and Nan, B. and Tan, H. and Salamon, D. and Ye, BH. and Zhang, HB.",
  title="Ultrahigh energy density and thermal stability in sandwich-structured nanocomposites with dopamine Ag BaTiO3",
  journal="Energy Storage Materials",
  year="2020",
  volume="31",
  number="1",
  pages="492--504",
  doi="10.1016/j.ensm.2020.06.030",
  issn="2405-8297",
  url="https://www.sciencedirect.com/science/article/pii/S240582972030252X?via%3Dihub"
}