Enhanced energy storage properties of BaTiO3-Bi0.5Na0.5TiO3 lead-free ceramics modified by SrY0.5Nb0.5O3
Enhanced energy storage properties of BaTiO3-Bi0.5Na0.5TiO3 lead-free ceramics modified by SrY0.5Nb0.5O3
复制标题
SrY0.5Nb0.5O3改性BaTiO3-Bi0.5Na0.5TiO3无铅陶瓷增强储能性能
DOI：
10.1016/j.jallcom.2018.11.106
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发表时间：
2019-03-25
影响因子：
6.2
通讯作者：
Wang, Tong
中科院分区：
文献类型：
--
作者：
Liu, Xiaoyu;Yang, Haibo;Wang, Tong
本工作采用传统的固相反应法制备了一种新型的无铅弛豫铁电陶瓷(1-x)(0.65BaTiO(3)-0.35Bi(0.5)Na(0.5)TiO(3))-xSrY(0.5)Nb(0.5)O(3)(1-x)BTBNT-xSYNx=0.02-0.12。结果表明，所有烧结样品均为钙钛矿结构。居里温度(T-c)向低温侧移动，导致室温下的介电常数较高，并且随着SYN含量的增加，铁电磁滞回线变得越来越细。0.92BTBNT-0.08SYN陶瓷在152kV/cm下的放电能量密度(W-rec)为1.36J/cm(3)，充放电效率为74.3%，具有最佳的储能性能。这些结果表明，(1-x)BTBNT-xSYN无铅陶瓷可以应用于脉冲功率电容器。(C)2018爱思唯尔B.V.保留所有权利。
In this work, a novel lead-free relaxor-ferroelectric ceramics of (1-x)(0.65BaTiO(3)-0.35Bi(0.5)Na(0.5)TiO(3))-xSrY(0.5)Nb(0.5)O(3) ((1-x)BTBNT-xSYN x = 0.02-0.12), was designed and prepared by the conventional solid state reaction method. The results show that all of the sintered samples have a perovskite structure. The Curie Temperature (T-c) moves to the low temperature side which causes the high dielectric constant at room temperature, and the ferroelectric hysteresis loop becomes slimmer and slimmer with increasing the content of SYN. Meanwhile, the optimal energy storage properties can be obtained in 0.92BTBNT-0.08SYN ceramic with an impressive discharged energy density (W-rec) of 1.36 J/cm(3) under 152 kV/cm, and the charge-discharge efficiency reaches 74.3%. Therefore, all these results indicate that (1-x)BTBNT-xSYN lead-free ceramics can be applied for pulsed power capacitors. (C) 2018 Elsevier B.V. All rights reserved.