Ultrahigh energy density and thermal stability in sandwich-structured nanocomposites with dopamine Ag BaTiO3
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F20%3APU138314" target="_blank" >RIV/00216305:26620/20:PU138314 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S240582972030252X?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S240582972030252X?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ensm.2020.06.030" target="_blank" >10.1016/j.ensm.2020.06.030</a>
Alternative languages
Result language
angličtina
Original language name
Ultrahigh energy density and thermal stability in sandwich-structured nanocomposites with dopamine Ag BaTiO3
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20504 - Ceramics
Result continuities
Project
<a href="/en/project/LQ1601" target="_blank" >LQ1601: CEITEC 2020</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Energy Storage Materials
ISSN
2405-8297
e-ISSN
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Volume of the periodical
31
Issue of the periodical within the volume
1
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
13
Pages from-to
492-504
UT code for WoS article
000577150900005
EID of the result in the Scopus database
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