Energy storage property of (Pb0.97La0.02)(Zr0.5Sn0.4Ti0.1)O-3(-) (Na0.5Bi0.5)(0.94)Ba0.06TiO3 ceramics: Effects of antiferroelectric-relaxor transition and improved breakdown strength
Energy storage property of (Pb0.97La0.02)(Zr0.5Sn0.4Ti0.1)O-3(-) (Na0.5Bi0.5)(0.94)Ba0.06TiO3 ceramics: Effects of antiferroelectric-relaxor transition and improved breakdown strength
复制标题
(Pb0.97La0.02)(Zr0.5Sn0.4Ti0.1)O-3(-) (Na0.5Bi0.5)(0.94)Ba0.06TiO3陶瓷的储能性能：反铁电-弛豫转变和改进击穿的影响
DOI：
10.1016/j.jeurceramsoc.2020.03.004
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发表时间：
2020
影响因子：
5.7
通讯作者：
Zhang Shan-Tao
中科院分区：
文献类型：
--
作者：
Li Ling;Wang Rui-Xue;Gu Zheng-Bin;Lu Ming-Hui;Zhu Mingwei;Zhang Shan-Tao
x）（Pb0.97La0.02）（Zr0.5Sn0.4Ti0.1）O3-x（Na0.5Bi0.5）0.94Ba0.06TiO3（x= 0 ~ 0.4）陶瓷的制备和研究。该陶瓷由钙钛矿固溶体基体和析出孤立的SnO 2颗粒组成，形成0-3型复合结构。随着x值的增加，钙钛矿固溶体的室温晶体结构由四方晶系转变为赝立方晶系，因此，其电学性质在x= 0时表现为强反铁电，在x= 0.1时表现为亚稳反铁电，在x> 0.1时表现为弛豫铁电。此外，由于复合结构，击穿强度增强，并在x= 0.2时达到最大值190 kV/cm。相变和击穿强度的提高都有助于提高储能性能，x= 0.2的陶瓷具有最大的可恢复能量密度wrec，达到1.84J/cm 3，放电效率η达到86.6%。特别是，w rec和η在25 - 125° C范围内显示出显著改善的热稳定性。
x)(Pb 0.97 La 0.02)(Zr 0.5 Sn 0.4 Ti 0.1) O 3-x (Na 0.5 Bi 0.5) 0.94 Ba 0.06 TiO 3 (x= 0∼ 0.4) ceramics have been prepared and investigated. The ceramics consist of perovskite solid solution matrix and precipitated, isolated SnO 2 particle, resulting in 0–3 type composite structure. With increasing x value, the room temperature crystal structure of perovskite solid solution transforms from tetragonal to pseudocubic, therefore, the electrical property evaluates form robust antiferroelectric at x= 0, metastable antiferroelectric at x= 0.1, and then relaxor ferroelectric at x> 0.1. Moreover, the breakdown strength is enhanced due to the composite structure and reaches maximum value of 190 kV/cm at x= 0.2. Both the phase transition and enhanced breakdown strength are helpful to improve energy storage property, the x= 0.2 ceramic shows largest recoverable energy density w rec of 1.84 J/cm 3, discharge efficiency η of 86.6%. Especially, both w rec and η illustrates significantly improved thermal stability within 25− 125° C.