Improving energy storage performance and high-temperature stability in Bi0.5Na0.5TiO3-based lead-free dielectric ceramics by ZrO2 doping

被引：10
作者：
Liu, Tianyu [1 ]
Liu, Zhaobo [1 ]
Lin, Jiawei [1 ]
Chen, Kepi [1 ]
机构：
[1] North China Elect Power Univ, Sch Energy Power & Mech Engn, Beijing 102206, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2023年 / 49卷 / 23期
关键词：
BNT-Based lead-free ceramic; Perovskite; Energy storage; Dielectric ceramics; Thermal stability; LOW ELECTRIC-FIELDS; FERROELECTRIC PROPERTIES; DENSITY; EFFICIENCY;
D O I：
10.1016/j.ceramint.2023.09.059
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：
The effects of ZrO2 addition on the microstructure, dielectric properties, and energy storage performance of Bi0.5Na0.5TiO3-Bi0.5K0 center dot 5TiO3-BaTiO3-Sr(Mg1/3Nb2/3)O-3 (BBNKT-SMN) ceramics were systematically investigated. The XRD results show that ZrO2 dissolved in the perovskite matrix without any detectable secondary phases. ZrO2 doping can improve densification, grain growth, and energy storage performance. The sample doped with 4 mol% ZrO2 exhibited excellent dielectric thermal stability, meeting the Z9R specification and having potential applications in high-temperature capacitors. Finally, an optimal recoverable energy storage density Wrec = 3.0 J/cm3 at 260 kV/cm and a high energy storage efficiency. = 88.2% were achieved. In addition, this ceramic exhibited excellent thermal stability (30-180 C), frequency insensitivity (1-100 Hz), and high-cycle stability (up to 104). This study further demonstrates that the addition of ZrO2 is a simple and effective way for improving the thermal stability of the dielectric and the energy storage performance.
引用
收藏
页码：37349 / 37355
页数：7
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