Enhanced energy storage performance of Ba0.94(Bi0.5K0.5)0.06Ti0.85Zr0.15O3 relaxor ceramics by two-step sintering method

被引：23
作者：
Wang, X. W. [1 ,2 ]
Zhang, B. H. [1 ,2 ,3 ]
Feng, G. [1 ,2 ]
Sun, L. Y. [1 ,2 ]
Hu, Y. C. [1 ,2 ]
Shang, S. Y. [1 ,2 ]
Yin, S. Q. [1 ,2 ]
Shang, J. [1 ,2 ]
Wang, X. E. [1 ,2 ]
机构：
[1] Henan Normal Univ, Coll Phys & Mat Sci, Lab Funct Mat, Xinxiang 453007, Peoples R China
[2] Henan Key Lab Photovolta Mat, Xinxiang 453007, Peoples R China
[3] Zhejiang Univ, Sch Mat Sci & Engn, Lab Dielect Mat, Hangzhou 310027, Zhejiang, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2019年 / 114卷
基金：
中国国家自然科学基金;
关键词：
Sintering temperature; Microstructure; Relaxor behavior; Energy storage; FERROELECTRIC CERAMICS; ELECTRICAL-PROPERTIES; COLOSSAL PERMITTIVITY; DIELECTRIC-PROPERTIES; LEAD; TIO2; BEHAVIOR; DENSITY; TRANSITION; NA;
D O I：
10.1016/j.materresbull.2019.02.004
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A series of Ba-0.94(Bi0.5K0.5)(0.06)Ti0.85Zr0.15O3 (referred to as BBK) ceramics with high density microstructure were fabricated by a two-step sintering method. A strong influence of the sintering temperature on the microstructure, dielectric properties and relaxor behavior of BBK ceramics was observed. Slim hysteresis loops could be obtained in all BBK ceramics, and the optimal sample sintered at 1250 degrees C for 6 h shows a high dielectric constant (epsilon(r) (similar to)3066 at 10(2) Hz), a low dielectric loss (tan delta (similar to)0.005 at 10(2) Hz), a high energy density (W-discharge (similar to)0.95 J/cm(3) at 76 kV/ cm) and a high energy efficiency (eta (similar to)88% at 76 kV/cm). The correlation of electrical properties for BBK ceramics with sintering temperatures could be attributed to grain size effect and relaxor behavior.
引用
收藏
页码：74 / 79
页数：6
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