Improved energy storage performance of bismuth sodium titanate-based lead-free relaxor ferroelectric ceramics via Bi-containing complex ions doping

Lead-free dielectric ceramics can be used to make quick charge–discharge capacitor devices due to their high power density. Their use in advanced electronic systems, however, has been hampered by their poor energy storage performance (ESP), which includes low energy storage efficiency and recoverabl...

Full description

Saved in:
Bibliographic Details
Published in:Rare metals 2023-05, Vol.42 (5), p.1472-1482
Main Authors: Shi, Wen-Jing, Zhang, Lei-Yang, Yang, Yu-Le, Alikin, D. O., Shur, V. Ya, Wei, Xiao-Yong, Du, Hong-Liang, Jin, Li
Format: Article
Language:English
Subjects:
Biomaterials
Bismuth
Capacitors
Ceramics
Chemistry and Materials Science
Combinatorial analysis
Electronic systems
Energy
Energy storage
Ferroelectric materials
Ferroelectricity
Lead free
Materials Engineering
Materials Science
Metallic Materials
Nanoscale Science and Technology
Optimization
Original Article
Phase transitions
Physical Chemistry
Relaxors
Sodium titanate
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:Lead-free dielectric ceramics can be used to make quick charge–discharge capacitor devices due to their high power density. Their use in advanced electronic systems, however, has been hampered by their poor energy storage performance (ESP), which includes low energy storage efficiency and recoverable energy storage density ( W rec ). In this work, we adopted a combinatorial optimization strategy to improve the ESP in (Bi 0.5 Na 0.5 )TiO 3 (BNT)-based relaxor ferroelectric ceramics. To begin, the Bi-containing complex ions Bi(Mg 2/3 Nb 1/3 )O 3 (BMN) were introduced into a BNT-based matrix in order to improve the diffuse phase transition, increase Bi−O bond coupling, avoid macro domain development, and limit polarization response hysteresis. Second, the viscous polymer process was employed to reduce sample thickness and porosity, resulting in an apparent increase in breakdown strength in (1 −  x )[0.7(Bi 1/2 Na 1/2 )TiO 3 ]-0.3SrTiO 3 - x Bi(Mg 2/3 Nb 1/3 )O 3 (BS- x BMN) ceramics. Finally, in x  = 0.20 composition, an amazing W rec of 5.62 J·cm −3 and an ultra-high efficiency of 91.4% were simultaneously achieved at a relatively low field of 330 kV·cm −1 , together with remarkable temperature stability in the temperature range of 30–140 °C (3.5 J·cm −3  ± 5% variation). This research presents a new lead-free dielectric material with superior ESP for use in pulsed power capacitors. Graphical abstract
ISSN:1001-0521
1867-7185
DOI:10.1007/s12598-022-02176-x