Bismuth ferrite-modified lead-free ceramics with reduced sintering temperature and improved energy storage properties

Dielectric ceramics with high polarization and low sintering temperature are important for high-performance and low-cost multilayer ceramic capacitors (MLCCs). Herein, BiFeO3 was added to a lead-free composition 0.48BaTiO3-0.4Bi(Mg0.5Hf0.5)O3-0.12SrTiO3 to lower the sintering temperature and increas...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics letters 2023-05, Vol.122 (18)
Main Authors: Kong, Xi, Yang, Letao, Luo, Zixi, Liu, Yiqian, Lan, Shun, Yang, Bingbing, Meng, Fanqi, Ren, Weibin, Zhang, Xinyue, Cai, Jinghan, Lin, Yuan-Hua, Guo, Jinming, Nan, Ce-Wen
Format: Article
Language:English
Subjects:
Applied physics
Bismuth
Bismuth ferrite
Ceramics
Energy storage
Lead free
Low cost
Multilayers
Palladium
Polarization
Silver
Sintering
Stability
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Dielectric ceramics with high polarization and low sintering temperature are important for high-performance and low-cost multilayer ceramic capacitors (MLCCs). Herein, BiFeO3 was added to a lead-free composition 0.48BaTiO3-0.4Bi(Mg0.5Hf0.5)O3-0.12SrTiO3 to lower the sintering temperature and increase the polarization simultaneously. As a result, a low sintering temperature of 950 °C and high comprehensive energy storage properties with a recoverable energy density Wrec of 5.7 J/cm3 and an energy efficiency η of 92% at 450 kV/cm were achieved. Together with the good temperature stability and cycling stability of Wrec and η, the ceramics exhibit great potential in the energy storage MLCCs with low-cost Ag-Pd electrodes with a high Ag content.
ISSN:0003-6951
1077-3118
DOI:10.1063/5.0145299