Optimization of energy storage properties in (1 - x)Na0.5Bi0.5TiO3-xSr0.7La0.2TiO3-relaxed ferroelectric ceramics

被引:11
作者
Ma, Ziyue [1 ]
Zhu, Jianye [1 ]
Wu, Jianhua [1 ]
Hu, Yanhua [2 ]
Lou, Xiaojie [3 ,4 ]
Sun, Ningning [1 ]
Zhao, Ye [1 ]
Li, Yong [1 ]
Hao, Xihong [1 ]
机构
[1] Mongolia Univ Sci & Technol, Inner Mongolia Key Lab Ferroelectr Related New En, Sch Met & Mat, Baotou 014010, Inner Mongolia, Peoples R China
[2] Ordos Inst Technol, Dept Chem Engn, Ordos 017000, Inner Mongolia, Peoples R China
[3] Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, Xian 710049, Shaanxi, Peoples R China
[4] Xi An Jiao Tong Univ, State Key Lab Mech Behav & Mat, Xian 710049, Shaanxi, Peoples R China
关键词
Energy storage; ferroelectric; lead-free ceramics; dielectric; microstructure; LEAD-FREE CERAMICS; DENSITY; EFFICIENCY; PERSPECTIVES; TEMPERATURE; PERFORMANCE;
D O I
10.1142/S2010135X22420036
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
Ferroelectric materials are considered to be the most competitive energy storage materials for applications in pulsed power electronics due to excellent charge-discharge properties. However, the low energy storage density is the primary problem limiting their practical application. In this study, (1 - x)Na0.5Bi0.5TiO3-xSr(0.7)La(0.2)TiO(3)[(1 - x)NBT-xSLT] ferroelectric ceramics are found to exhibit excellent energy storage performances through a synergistic strategy. As the SLT concentration increases, the relaxation characteristic increases significantly and the breakdown strength increases dramatically from 150 kV/cm to 220 kV/cm. The recoverable energy storage density of the 0.55NBT-0.45SLT ceramic is 2.86 J/cm(3) with an energy storage efficiency of 88% under an electric field of 220 kV/cm. Furthermore, the ceramic with x = 0.45 mol exhibited excellent energy storage stability in the ranges of 20-180 degrees C (temperature) and 1-125 Hz (frequency). These excellent properties demonstrate the potential of (1 - x)NBT-x SLT ceramics when used as dielectric capacitors in pulsed power systems.
引用
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页数:7
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