Constructing layered structures to enhance the breakdown strength and energy density of Na0.5Bi0.5TiO3-based lead-free dielectric ceramics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F19%3APU134811" target="_blank" >RIV/00216305:26620/19:PU134811 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.rsc.org/en/Content/ArticleLanding/2018/TC/C8TC04447C#!divAbstract" target="_blank" >https://pubs.rsc.org/en/Content/ArticleLanding/2018/TC/C8TC04447C#!divAbstract</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c9tc05637h" target="_blank" >10.1039/c9tc05637h</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Constructing layered structures to enhance the breakdown strength and energy density of Na0.5Bi0.5TiO3-based lead-free dielectric ceramics

Popis výsledku v původním jazyce

The improvement of breakdown strength for NBT-based ceramics is currently the main challenge in applications of lead-free dielectric energy-storage materials. In this study, large-polarization 0.65Na(0.5)Bi(0.5)TiO(3)-0.35SrTiO(3) (NBST) and high-efficiency 0.45Na(0.5)Bi(0.5)TiO(3)-0.55Sr(0.7)Bi(0.2)TiO(3) (NBSBT) ceramics were selected to construct layered ceramics. The effect of the number of interfaces on breakdown behavior and polarization was investigated by controlling the stacking of layered ceramics. The single-layer NBST/NBSBT alternately stacked layered ceramics achieved a maximum breakdown strength of 242 kV cm(-1), resulting in high recoverable energy storage density (4.48 J cm(-3)) and efficiency (similar to 90%). Meanwhile, the energy storage performance of NBST/NBSBT layered ceramics also exhibits excellent frequency (10-200 Hz) and temperature (25-125 degrees C) stability. The results prove that the large number of interfaces is beneficial to obtain high breakdown strength and maximum polarization, which brings new enlightenment to further improve the energy storage density of NBT-based materials.

Název v anglickém jazyce

Constructing layered structures to enhance the breakdown strength and energy density of Na0.5Bi0.5TiO3-based lead-free dielectric ceramics

Popis výsledku anglicky

The improvement of breakdown strength for NBT-based ceramics is currently the main challenge in applications of lead-free dielectric energy-storage materials. In this study, large-polarization 0.65Na(0.5)Bi(0.5)TiO(3)-0.35SrTiO(3) (NBST) and high-efficiency 0.45Na(0.5)Bi(0.5)TiO(3)-0.55Sr(0.7)Bi(0.2)TiO(3) (NBSBT) ceramics were selected to construct layered ceramics. The effect of the number of interfaces on breakdown behavior and polarization was investigated by controlling the stacking of layered ceramics. The single-layer NBST/NBSBT alternately stacked layered ceramics achieved a maximum breakdown strength of 242 kV cm(-1), resulting in high recoverable energy storage density (4.48 J cm(-3)) and efficiency (similar to 90%). Meanwhile, the energy storage performance of NBST/NBSBT layered ceramics also exhibits excellent frequency (10-200 Hz) and temperature (25-125 degrees C) stability. The results prove that the large number of interfaces is beneficial to obtain high breakdown strength and maximum polarization, which brings new enlightenment to further improve the energy storage density of NBT-based materials.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20504 - Ceramics

Projekt

<a href="/cs/project/LQ1601" target="_blank" >LQ1601: CEITEC 2020</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Journal of Materials Chemistry C

ISSN

2050-7526

e-ISSN

2050-7534

Svazek periodika

7

Číslo periodika v rámci svazku

48

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

15292-15300

Kód UT WoS článku

000502752000019

EID výsledku v databázi Scopus

—