Novel NaNbO3-Sr0.7Bi0.2TiO3 lead-free dielectric ceramics with excellent energy storage properties

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F21%3APU142059" target="_blank" >RIV/00216305:26620/21:PU142059 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0272884220329461?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0272884220329461?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ceramint.2020.09.228" target="_blank" >10.1016/j.ceramint.2020.09.228</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Novel NaNbO3-Sr0.7Bi0.2TiO3 lead-free dielectric ceramics with excellent energy storage properties

Popis výsledku v původním jazyce

NaNbO3 (NN) is considered to be one of the most prospective lead-free antiferroelectric energy storage materials due to the merits of low cost, nontoxicity, and low density. Nevertheless, the electric field-induced ferroelectric phase remains dominant after the removal of the electric field, resulting in large residual polarization, which prevents NN ceramics from obtaining superior energy storage performance. In this work, the relaxor ferroelectric Sr0.7Bi0.2TiO3 (SBT) was chosen to partially replace the NN ceramics, and the introduction of the nanodomain of the relaxor ferroelectric hinders the generation of field-induced ferroelectric phases, allowing the material to combine the large polarization strength of the relaxor ferroelectric with the near-zero residual polarization of the antiferroelectric. Large recoverable energy storage density (4.5 J cm(-3)) and ultra-high energy storage efficiency (90.3%) were gained in NN-20SBT under an electric field of 288 kV cm(-1). Furthermore, superior temperature (25-120 degrees C) and frequency (1-500 Hz) stabilities were acquired. These performances demonstrate that NN20SBT ceramics are potential candidates as dielectric materials for high energy storage density pulsed power capacitors.

Název v anglickém jazyce

Novel NaNbO3-Sr0.7Bi0.2TiO3 lead-free dielectric ceramics with excellent energy storage properties

Popis výsledku anglicky

NaNbO3 (NN) is considered to be one of the most prospective lead-free antiferroelectric energy storage materials due to the merits of low cost, nontoxicity, and low density. Nevertheless, the electric field-induced ferroelectric phase remains dominant after the removal of the electric field, resulting in large residual polarization, which prevents NN ceramics from obtaining superior energy storage performance. In this work, the relaxor ferroelectric Sr0.7Bi0.2TiO3 (SBT) was chosen to partially replace the NN ceramics, and the introduction of the nanodomain of the relaxor ferroelectric hinders the generation of field-induced ferroelectric phases, allowing the material to combine the large polarization strength of the relaxor ferroelectric with the near-zero residual polarization of the antiferroelectric. Large recoverable energy storage density (4.5 J cm(-3)) and ultra-high energy storage efficiency (90.3%) were gained in NN-20SBT under an electric field of 288 kV cm(-1). Furthermore, superior temperature (25-120 degrees C) and frequency (1-500 Hz) stabilities were acquired. These performances demonstrate that NN20SBT ceramics are potential candidates as dielectric materials for high energy storage density pulsed power capacitors.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20504 - Ceramics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

CERAMICS INTERNATIONAL

ISSN

0272-8842

e-ISSN

1873-3956

Svazek periodika

47

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

3713-3719

Kód UT WoS článku

000602932800002

EID výsledku v databázi Scopus

2-s2.0-85092011345