Enhanced comprehensive energy storage properties in Bi0.5Na0.5TiO3-based relaxor ferroelectric ceramics under a moderate electric field

Bismuth sodium titanate (Bi0.5Na0.5TiO3)-based relaxor ferroelectric ceramics have received ever-increasing interest for their potential application in dielectric capacitors owing to their sterling energy storage capability. Herein, the perovskite end-member Ba(Fe0.5Nb0.5)O3 (BFN) was incorporated i...

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Bibliographic Details
Published in:Applied physics letters 2024-06, Vol.124 (25)
Main Authors: Jiang, Shunshun, Zhang, Ji, Luo, Huajie, Liu, Lisha, Li, Jinglei, Karpinsky, Dmitry V., Wang, Jing, Wang, Yaojin
Format: Article
Language:English
Subjects:
Bismuth titanate
Ceramics
Electric fields
Energy storage
Ferroelectric materials
Ferroelectricity
Frequency stability
Hysteresis loops
Perovskites
Relaxors
Sodium titanate
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Summary:Bismuth sodium titanate (Bi0.5Na0.5TiO3)-based relaxor ferroelectric ceramics have received ever-increasing interest for their potential application in dielectric capacitors owing to their sterling energy storage capability. Herein, the perovskite end-member Ba(Fe0.5Nb0.5)O3 (BFN) was incorporated into 0.7Bi0.5Na0.5TiO3-0.3SrTiO3 (0.7BNT-0.3ST) ceramics to improve the relaxor characteristics and refine the grain, leading to slim polarization–electric field (P–E) hysteresis loops and enhanced electric breakdown strength. Particularly, the 0.85(0.7BNT-0.3ST)-0.15BFN ceramics achieved a high recoverable energy density of 5.7 J/cm3 and a high energy storage efficiency of 86.4% under a moderate electric field of 390 kV/cm. Additionally, remarkable stability in frequency, cycling, and temperature and excellent charge/discharge behavior were achieved at the same time. The above findings reveal that BFN-modified BNT-ST ceramics display greatly improved comprehensive energy storage properties, making them promising candidates in the field of electrostatic energy storage.
ISSN:0003-6951
1077-3118
DOI:10.1063/5.0217327