Dielectric, ferroelectric, and energy storage properties of Ba(Zn1/3Nb2/3) O3-modfied BiFeO3-BaTiO3 Pb-Free relaxor ferroelectric ceramics

被引：45

作者：

Tang, Mingyang ^{[1
]}

Yu, Linjiang ^{[1
]}

Wang, Yifei ^{[2
]}

Lv, Jingwen ^{[1
]}

Dong, Jia ^{[1
]}

Guo, Biao ^{[1
]}

Chen, Fukang ^{[1
]}

Ai, Qiao ^{[1
]}

Luo, Yu ^{[1
]}

Li, Quan ^{[1
]}

Yu, Kun ^{[1
]}

Wu, Fei ^{[4
]}

Liu, Gang ^{[1
,3
]}

机构：

[1] Southwest Univ, Sch Mat & Energy, Chongqing 400715, Peoples R China

[2] Southwest Univ, Hanhong Coll, Chongqing 400715, Peoples R China

[3] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Peoples R China

[4] Southwest Univ, CET Coll Engn & Technol, Chongqing 400715, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2021年 / 47卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Bismuth ferrite; Perovskite; Relaxor ferroelectric; Energy storage ceramic; Charge-discharge; LEAD-FREE CERAMICS; PIEZOELECTRIC PROPERTIES; IMPEDANCE SPECTROSCOPY; PERFORMANCE; DENSITY; CAPACITORS; BEHAVIOR; MULTILAYERS; RELAXATION; CONDUCTION;

D O I：

10.1016/j.ceramint.2020.09.235

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：

Pb-free bulk ceramics (1-x)[0.65BiFeO(3)-0.35BaTiO(3)]-xBa(Zn1/3Nb2/3)O-3 were produced by traditional solid-state reaction route. In this experiment, Ba(Zn1/3Nb2/3)O-3 (BZN) was introduced to destroy long-range order domains in order to obtain higher energy storage performance. Impedance and XPS analysis indicate that oxygen vacancies exist and participate in relaxation processes at high temperatures. With the increase of BZN content, the dielectric relaxation behavior is improved, the hysteresis loop becomes thinner, remnant polarization decreases, and the breakdown electric field increases to 180 kV/cm in 15BZN. A maximum Wrec (1.62 J/cm(3)) is eventually reached in 7BZN with great temperature stability. The highest efficiency is 91% in 15BZN with Wrec of 1.28 J/cm(3). Charge-discharge tests show that ceramics have a quick discharge time of t(0.9) < 0.1 mu s, which makes BZN-doped ceramics a potential candidate for energy storage devices.

引用

页码：3780 / 3788

页数：9

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