Enhanced energy density and thermal stability in relaxor ferroelectric Bi0.5Na0.5TiO3-Sr0.7Bi0.2TiO3 ceramics

被引：248

作者：

Qiao, Xiaoshuang ^{[1
]}

Wu, Di ^{[1
]}

Zhang, Fudong ^{[1
]}

Niu, Mengshu ^{[1
]}

Chen, Bi ^{[1
]}

Zhao, Xumei ^{[1
]}

Liang, Pengfei ^{[2
]}

Wei, Lingling ^{[3
]}

Chao, Xiaolian ^{[1
]}

Yang, Zupei ^{[1
]}

机构：

[1] Shaanxi Normal Univ, Sch Mat Sci & Engn, Shaanxi Engn Lab Adv Energy Technol, Key Lab Macromol Sci Shaanxi Prov,Shaanxi Key Lab, Xian 710062, Shaanxi, Peoples R China

[2] Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Shaanxi, Peoples R China

[3] Shaanxi Normal Univ, Sch Chem & Chem Engn, Xian 710062, Shaanxi, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2019年 / 39卷 / 15期

基金：

美国国家科学基金会;

关键词：

Bi0.5N0.5TiO3; Energy storage; Relaxation behaviour; Thermal stability; FIELD-INDUCED STRAIN; LEAD-FREE CERAMICS; STORAGE PROPERTIES; ELECTRIC-FIELD; STRUCTURE EVOLUTION; TEMPERATURE; PERFORMANCE; MICROSTRUCTURE; CAPACITORS;

D O I：

10.1016/j.jeurceramsoc.2019.07.003

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：

Sr0.7Bi0.2TiO3 (SBT) was introduced into Bi0.5Na0.5TiO3 (BNT) via a standard solid-state route to modulate its relaxation behaviour and energy storage performance. With increasing SBT content, the perovskite structure of BNT transforms from a rhombohedral phase to a weakly polarized pseudo-cubic phase, and the relaxation behaviour is enhanced. In particular, the E ms is improved from 120 kV/cm of BNT to 160 kV/cm of 0.6BNT-0.4SBT, which displays a large recoverable energy storage density (W-rec = 2.20 J/cm(3)), implying a large potential ability of energy storage for the 0.6BNT-0.4SBT ceramic. Moreover, both dielectric properties (28-326 degrees C) and energy storage properties (20-140 degrees C) exhibit a good thermal stability for the same 0.6BNT-0.4SBT composition. These characteristics suggest 0.6BNT-0.4SBT ceramic could be a promising candidate to be applied in a pulse power system over a broad temperature range.

引用

页码：4778 / 4784

页数：7

共 46 条

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