A complex lead-free (Na, Bi, Ba)(Ti, Fe)O3 single phase perovskite ceramic with a high energy-density and high discharge-efficiency for solid state capacitor applications

被引：87
|
作者：
Mishra, Anupam [1 ]
Majumdar, Bhaskar [2 ]
Ranjan, Rajeev [1 ]
机构：
[1] Indian Inst Sci, Dept Mat Engn, Bangalore 560012, Karnataka, India
[2] Def Met Res Lab, Kanchanbagh, Hyderabad 500058, Andhra Pradesh, India
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2017年 / 37卷 / 06期
关键词：
Lead free; Ferroelectric; Energy density; Discharge efficiency; STORAGE PROPERTIES; FERROELECTRIC CERAMICS;
D O I：
10.1016/j.jeurceramsoc.2017.01.036
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：
We have investigated a series of compositions in the pseudo-ternary lead-free alloy system Na1/2Bi1/2TiO3-BaTiO3-BiFeO3 with regard to its energy storage density and discharge efficiency. A composition 0.4(Na0.5Bi0.5TiO3)-0.225BaTiO(3)-0.375BiFeO(3) of this series was identified to give the best energy density and discharge efficiency. While conventional sintering gave energy density of 0.77 J/cm(3) and discharge efficiency of 67%, we achieved a remarkable increase in energy storage density (similar to 1.4 J/cm3) and discharge efficiency (similar to 90%) by using spark plasma sintering of this composition. Our results suggest that this alloy system can be a potential lead-free candidate for high electric energy storage and discharge efficiency.(C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2379 / 2384
页数：6
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