Enhanced energy storage in Sn-doped sodium bismuth titanate lead-free relaxor ferroelectric ceramics

被引：18
|
作者：
Li, Xiaowei [1 ,2 ]
Hao, Xihong [2 ]
An, Shengli [1 ,2 ]
Li, Yong [2 ]
Zhang, Qiwei [2 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing 100083, Peoples R China
[2] Inner Mongolia Univ Sci & Technol, Baotou 014010, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2022年 / 33卷 / 08期
关键词：
PIEZOELECTRIC PROPERTIES; PEROVSKITE CERAMICS; DENSITY;
D O I：
10.1007/s10854-022-07714-y
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
SnO2-doped (Bi0.5Na0.5)(0.93)Ba0.07TiO3 (BNT7BT) ceramics were prepared via a conventional solid-state reaction method. Their phase structures, microstructures, and electrical properties were characterized in detail. SnO2 doping increased the lattice parameters and the average grain sizes. A certain amount of SnO2 could improve the dielectric properties, and tune the relaxor behavior of the BNT7BT; in this manner, low energy loss and high energy storage density were achieved. In particular, the BNT7BT sample with 0.2 mol% SnO2 exhibited a high recoverable energy density of 1.27 J cm(-3) and energy efficiency of 79.15%, which was mainly attributed to a large electric-field of 150 kV cm(-1) and a small remnant polarization of 1.15 mu C cm(-2). The results indicate that (Bi0.5Na0.5)(0.93)Ba0.07SnxTi1-xO3 ceramics can be a promising lead-free candidate for energy storage capacitors.
引用
收藏
页码：5265 / 5272
页数：8
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