Effects of annealing temperature and ion doping on energy storage performance of Na0.5Bi0.5TiO3-Based thin films

被引：6
作者：
Chi, Qingguo [1 ,2 ]
Dong, Bo [1 ,2 ]
Yin, Chao [1 ,2 ]
Zhang, Xue [1 ,2 ]
Xu, Zining [1 ,2 ]
Zhang, Changhai [1 ,2 ]
Zhang, Yue [1 ,2 ]
Zhang, Tiandong [1 ,2 ]
机构：
[1] Harbin Univ Sci & Technol, Key Lab Engn Dielect & Its Applicat, Minist Educ, Harbin 150080, Peoples R China
[2] Harbin Univ Sci & Technol, Sch Elect & Elect Engn, Harbin 150080, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2024年 / 50卷 / 19期
基金：
中国国家自然科学基金;
关键词：
Lead-free films; Ion doping; Annealing temperature; Energy storage; DIELECTRIC CAPACITOR; DENSITY; STABILITY; CERAMICS; PROPERTY;
D O I：
10.1016/j.ceramint.2024.06.319
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：
Lead-free ferroelectric thin film capacitors offering superb power density and fast charge-discharge rates are ideal for energy storage applications. However, the trade-off relationship between polarization strength and breakdown strength significantly hinders the improvement of energy storage performance. In this work, relaxorferroelectric Na0.5Bi0.5TiO3 (NBT) thin films have been deposited on Pt/Ti/SiO2/Si substrate via sol-gel method. First, the energy storage performance of the films is optimized by adjusting the annealing temperature. It is found that the NBT film annealed at 650 degrees C has both excellent breakdown strength and polarization strength. Then the influence of ion doping on the energy storage performance of NBT films has been studied. An excellent energy storage density of 42.1 J/cm3 and efficiency of 55.8 % are simultaneously achieved in the 2 % Mn-NBT thin film. Additionally, the energy storage performance remains stable within the temperature range of 25-180 degrees C and frequency range of 500-5000 Hz. The energy storage performance of 2 % Mn-NBT thin film did not decrease significantly after 107 electrical cycles. It is predicted that this work will advance the utilization of Na0.5Bi0.5TiO3-based film capacitors in energy storage systems.
引用
收藏
页码：35128 / 35136
页数：9
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