High energy storage efficiency of NBT-SBT lead-free ferroelectric ceramics
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F22%3APU146227" target="_blank" >RIV/00216305:26620/22:PU146227 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0272884222015139?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0272884222015139?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ceramint.2022.04.311" target="_blank" >10.1016/j.ceramint.2022.04.311</a>
Alternative languages
Result language
angličtina
Original language name
High energy storage efficiency of NBT-SBT lead-free ferroelectric ceramics
Original language description
Ceramic-based dielectrics have been widely used in pulsed power capacitors owing to their good mechanical and thermal properties. Bi0.5Na0.5TiO3-based (NBT-based) solid solutions exhibit relatively high polarization, which is considered as a promising dielectric energy storage material. However, the high remnant polarization and low energy efficiency limit their application in dielectric capacitors. Herein, a typical relaxor ferroelectric Sr0.7Bi0.2TiO3 (SBT) was introduced into the NBT system to strengthen the overall relaxor behavior, resulting in reduced remnant polarization. We prepared (1-x)NBT-xSBT (x = 0.35, 0.45, 0.55, and 0.65) ceramics by the conventional solid-phase reaction method and further investigated their microstructures, dielectric and energy storage properties. With the increase of SBT content, the size of the grains and the maximum dielectric constant gradually decreased, simultaneously. Furthermore, the dielectric shoulder corresponding to the maximum dielectric constant shifted to a lower temperature, indicating that the enhancement of polarization dynamics was a consequence of the domain refinement. As a result, the optimum property was identified in the 0.45NBT-0.55SBT sample with a high recoverable energy density of 1.34 J/cm(3) and an outstanding energy efficiency of 96% at a low electric field of 100 kV/cm.
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
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
CERAMICS INTERNATIONAL
ISSN
0272-8842
e-ISSN
1873-3956
Volume of the periodical
48
Issue of the periodical within the volume
16
Country of publishing house
GB - UNITED KINGDOM
Number of pages
7
Pages from-to
23266-23272
UT code for WoS article
000861149000004
EID of the result in the Scopus database
2-s2.0-85129363691