Lead-free BaTiO3-Bi0.5Na0.5TiO3-Na0.73Bi0.09NbO3 relaxor ferroelectric ceramics for high energy storage

被引:257
作者
Yang, Haibo [1 ]
Yan, Fei [1 ]
Lin, Ying [1 ]
Wang, Tong [1 ]
Wang, Fen [1 ]
Wang, Yilin [1 ]
Guo, Lina [1 ]
Tai, Wangda [1 ]
Wei, Han [1 ]
机构
[1] Shaanxi Univ Sci & Technol, Sch Mat Sci & Engn, Xian 710021, Peoples R China
基金
中国国家自然科学基金;
关键词
Lead-free; Energy storage; Relaxation; Dielectric properties; Ceramics; DIELECTRIC-PROPERTIES; DENSITY; PERFORMANCE; BEHAVIOR; RATIO;
D O I
10.1016/j.jeurceramsoc.2017.03.071
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
A series of (1-x)(0.65BaTiO(3)-0.35Bi(0.5)Na(0.5)TiO(3))-XNa0.73Bi0.09NbO3 ((1-x)BBNT-xNBN) (x = 0-0.14) ceramics were designed and fabricated using the conventional solid-state sintering method. The microstructure, dielectric property, relaxor behavior and energy storage property were systematically investigated. X-ray diffraction results reveal a pure perovskite structure and dielectric measurements exhibit a relaxor behavior for the (1-x)BBNT-xNBN ceramics. The slim polarization electric field (P-E) loops were observed in the samples with x >= 0.02 and the addition of Na0.73Bi0.09NbO3 (NBN) could decrease the remnant polarization (P-r) of the (1-x)BBNT-xNBN ceramics obviously. The sample with x = 0.08 exhibits the highest energy storage density of 1.70 J/cm(3) and the energy storage efficiency of 82% at 172kV/cm owing to its submicron grain size and high relative density. These results show that the (1-x)BBNT-xNBN ceramics may be promising lead-free materials for high energy storage density capacitors. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码:3303 / 3311
页数:9
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