High energy storage performance of Na(Nb0.95Ta0.05)O3/Na0.5Bi0.5TiO3 lead-free ferroelectric ceramics

被引：8
作者：
Yuan, Xupeng [1 ]
Zhang, Yangyang [2 ]
Gong, Lijiao [1 ]
Li, Baoqing [1 ]
Zhang, Ling [1 ]
机构：
[1] Shihezi Univ, Coll Mech & Elect Engn, Shihezi 832061, Peoples R China
[2] Huanghe Sci & Technol Coll, Fac Engn, Optoelect Informat Sci & Engn, Zhengzhou 450006, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2022年 / 48卷 / 09期
关键词：
Lead-free ferroelectric ceramics; NaNbO3-Based ceramics; Energy storage performance; Charge-discharge properties; DENSITY; DISCHARGE;
D O I：
10.1016/j.ceramint.2022.01.202
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：
NaNbO3-based lead-free ferroelectric ceramics are considered to be one of the most promising energy storage materials. In this paper, The (1-x)Na(Nb0.95Ta0.05)O-3-x(Bi0.5Na0.5)Ti-O3 ceramics have been investigated in detail. The SEM images presented that the addition of BNT obviously improved the bulk densities which reached a maximum at x = 0.4, corresponding to a high breakdown field strength of 240 kV/cm. The XRD patterns showed that the strongest diffraction peak was observed in the case of x = 0.4 and 2 theta = 33.2, implying that the two phases formed a superior mutual solubility, because of which a significant polarization intensity of 38.2 mu C/cm(2) was obtained. As a result, the 0.6NaNbO(3)-0.4(Bi0.5Na(0.5))TiO3 ceramics exhibited an excellent discharge energy density of 3.607 J/cm(3), while the energy storage efficiency was calculated to be 72%.
引用
收藏
页码：13244 / 13249
页数：6
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