Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/11355
Title: Enhanced room temperature energy storage density of Bi(Li1/3Ti2/3)O-3 substituted Bi0.5Na0.5TiO3-BaTiO3 ceramics
Authors: Karakaya, Merve
Adem, Umut
Keywords: Energy storage
Barium titanate
Ferroelectric materials
Lead-free relaxor
Issue Date: 2021
Publisher: IOP Publishing
Abstract: For high power electronics applications, relaxor ferroelectrics are promising materials due to their superior energy storage properties. In this study, we investigate the energy storage properties of novel lead free relaxor ferroelectric ceramics (1-x)(0.92Bi(0.5)Na(0.5)TiO(3)-0.08BaTiO(3))-xBi(Li1/3Ti2/3)O-3 (abbreviated as BNT-8BT-xBLT). BNT-8BT composition which is close to morphotropic phase boundary was chosen as the base due to its large maximum polarization (P-m) and higher ratio of weakly polar tetragonal phase which is expected to facilitate ergodic relaxor behavior and improve energy storage density. The substitution of BLT to the BNT-8BT strongly disrupts the correlations between the polar nanoregions and the transition from nonergodic to ergodic relaxor state occurs already at x = 0.02 BLT at room temperature. Largest energy density (W-rec) at 61 kV cm(-1) was obtained for x = 0.02 sample (0.656 J cm(-3)), followed by x = 0.03 (W-rec = 0.614 J cm(-3)) and x = 0.05 (W-rec= 0.559 J cm(-3)). The x = 0.02 sample keeps its energy storage density at high temperatures (i.e. W-rec= 0.88 J cm(-3,) eta = 97%, E-m= 65 kV cm(-1) at 125 degrees C), while larger electric field (up to 89 kV cm(-1)) could be applied to the x = 0.05 sample with the smallest grain size and energy density of 1.03 J cm(-3) was reached at room temperature. Energy storage density values of BLT substituted materials normalized per unit applied electric field are promising among BNT-based materials.
URI: https://doi.org/10.1088/1361-6463/abf789
https://hdl.handle.net/11147/11355
ISSN: 0022-3727
1361-6463
Appears in Collections:Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

Files in This Item:
File SizeFormat 
BLT_article_published_version.pdf
  Until 2025-01-01
2.13 MBAdobe PDFView/Open    Request a copy
Show full item record

CORE Recommender

SCOPUSTM   
Citations

1
checked on Jan 28, 2023

WEB OF SCIENCETM
Citations

1
checked on Dec 24, 2022

Page view(s)

264
checked on Jan 23, 2023

Download(s)

2
checked on Jan 23, 2023

Google ScholarTM

Check

Altmetric


Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.