Detail publikace

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.

Originální název

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

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

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

Autoři

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

Vydáno

1. 10. 2020

Nakladatel

ELSEVIER

Místo

AMSTERDAM

ISSN

2405-8297

Periodikum

Energy Storage Materials

Ročník

31

Číslo

1

Stát

Nizozemsko

Strany od

492

Strany do

504

Strany počet

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"
}