Dielectric, energy storage, and charge-discharge properties of Yb-modified Sr0.7Bi0.2TiO3 relaxor ferroelectric ceramic

被引：1
作者：
Chen, Jingjing [1 ,2 ]
Zhao, Peng [3 ,5 ]
Si, Feng [1 ,2 ,4 ]
Zhang, Shuren [1 ,2 ]
Fang, Zixuan [1 ,2 ]
Tang, Bin [1 ,2 ,4 ]
机构：
[1] Univ Elect Sci & Technol China, Natl Engn Res Ctr Electromagnet Radiat Control Mat, Chengdu, Peoples R China
[2] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Device, Chengdu, Peoples R China
[3] Taiyuan Univ Technol, Coll Elect Informat & Opt Engn, Taiyuan, Peoples R China
[4] Univ Elect Sci & Technol China, Natl Engn Res Ctr Electromagnet Radiat Control Mat, Chengdu 611731, Peoples R China
[5] Taiyuan Univ Technol, Coll Elect Informat & Opt Engn, Taiyuan 030024, Peoples R China
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2024年 / 107卷 / 04期
基金：
中国国家自然科学基金;
关键词：
dielectric properties; dielectric relaxation; electrical properties; lead-free ceramics; LEAD-FREE CERAMICS; DENSITY; EFFICIENCY; PERFORMANCE; CAPACITORS; STABILITY; BREAKDOWN; STRENGTH; POLYMER;
D O I：
10.1111/jace.19600
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Dielectric capacitors have been widely studied in advanced electronics systems due to their rapid discharge rate and high-power density. Among them, relaxor ferroelectrics characterized by nanodomains possess broad application prospects as dielectric materials with high energy density and high efficiency. In this paper, the dielectric characteristics, energy storage performance, and charge-discharge behavior of rare-earth Yb-doped Sr0.7Bi0.2TiO3 ceramics are systematically investigated. The Yb-doped SBT ceramics reduced the grain size, improved the insulation and thermal conductivity, and significantly improved the dielectric breakdown strength. Finally, a high recoverable energy density of 2.32 J/cm(3) and an excellent energy storage efficiency of 92.2% were obtained at 300 kV/cm. In addition, pulsed charge-discharge tests show that Sr0.7Bi0.15Yb0.05TiO3 possesses a rapid discharge rate and high-power density with superior thermal stability. Based on these outstanding characteristics, Sr0.7Bi0.15Yb0.05TiO3 exhibits promising applications in pulsed power systems.
引用
收藏
页码：2504 / 2516
页数：13
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