BaTiO3-ZnNb2O6陶瓷介电及储能性能研究

doi:10.15541/jim20190170

无机材料学报 ›› 2020, Vol. 35 ›› Issue (4): 431-438.DOI: 10.15541/jim20190170 CSTR: 32189.14.10.15541/jim20190170

所属专题：功能陶瓷论文精选(二)

BaTiO₃-ZnNb₂O₆陶瓷介电及储能性能研究

王通¹,王渊浩¹,杨海波¹(),高淑雅¹,王芬¹,鲁雅文²

1. 陕西科技大学材料科学与工程学院, 陕西省无机材料绿色制备与功能化重点实验室, 西安 710021
2. 咸阳陶瓷研究设计院有限公司, 咸阳 712000

收稿日期:2019-04-22 修回日期:2019-06-12 出版日期:2020-04-20 网络出版日期:2019-09-12
作者简介:王通(1985-), 男, 讲师. E-mail: andyton85@163.com
基金资助:
国家自然科学基金(51702196);中国博士后科学基金(2017M620435);陕西省自然科学基础研究计划(2017JQ5088);陕西省教育厅专项科研计划(17JK0105);陕西科技大学博士科研启动基金(BJ16-07)

Dielectric and Energy Storage Property of BaTiO₃-ZnNb₂O₆ Ceramics

WANG Tong¹,WANG Yuanhao¹,YANG Haibo¹(),GAO Shuya¹,WANG Fen¹,LU Yawen²

1. Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi’an 710021, China
2. Xianyang Research and Design Institute of Ceramics Co. Ltd, Xianyang 712000, China

Received:2019-04-22 Revised:2019-06-12 Published:2020-04-20 Online:2019-09-12
Supported by:
National Natural Science Foundation of China(51702196);China Postdoctoral Science Foundation(2017M620435);Natural Science Foundation of Shaanxi Province(2017JQ5088);Scientific Research Program Funded by Shaanxi Provincial Education Department(17JK0105);Research Starting Foundation of Shaanxi University of Science and Technology(BJ16-07)

摘要/Abstract

摘要：

采用固相法制备(1-x)BaTiO₃-xZnNb₂O₆ (x=0.5mol%, 1mol%, 1.5mol%, 2mol%, 3mol%, 4mol%) (简称BTZN)陶瓷, 研究了BTZN陶瓷的烧结温度、结构、介电性能和铁电性能。BTZN陶瓷烧结温度随着ZnNb₂O₆含量增加逐渐降低。XRD结果表明当ZnNb₂O₆含量达到3mol%时出现第二相Ba₂Ti₅O₁₂。介电测试结果表明随ZnNb₂O₆含量的增加, BTZN陶瓷介电常数逐渐减小, 而介电常数的频率稳定性逐渐增强。介电温谱表明所有BTZN陶瓷均符合X8R电容器标准。BTZN陶瓷的极化强度值随着ZnNb₂O₆含量的增加逐渐降低。当x=4mol%时, BTZN陶瓷获得240 kV/cm的击穿电场和1.22 J/cm ³的可释放能量密度。

关键词: 钛酸钡, 陶瓷, 介电性能, 储能性能

Abstract:

(1-x)BaTiO₃-xZnNb₂O₆ (x=0.5mol%, 1mol%, 1.5mol%, 2mol%, 3mol%, 4mol%) (BTZN) ceramics were synthesized by solid state method. The sintering temperature, structure, dielectric property and ferroelectric property of BTZN ceramics were systematically investigated. The sintering temperature of BTZN ceramics decreased with increasing ZnNb₂O₆ content. XRD results show that the second phase Ba₂Ti₅O₁₂ was observed when the content of ZnNb₂O₆ reached 3mol%. The dielectric measurements result showed that with increasing ZnNb₂O₆ content, the dielectric constant of BTZN ceramics decreased gradually, while the frequency stability of dielectric constant increased gradually. The temperature dependence of dielectric constant results showed that all BTZN ceramics met the characteristics of X8R capacitors. Polarization values of BTZN ceramics decreased with increasing ZnNb₂O₆ content. The dielectric breakdown strength of 240 kV/cm and a recoverable energy density of 1.22 J/cm ³ were achieved in the sample of x=4mol%.

Key words: BaTiO₃, ceramics, dielectric property, energy storage property

中图分类号:

TQ174

王通,王渊浩,杨海波,高淑雅,王芬,鲁雅文. BaTiO₃-ZnNb₂O₆陶瓷介电及储能性能研究[J]. 无机材料学报, 2020, 35(4): 431-438.

WANG Tong,WANG Yuanhao,YANG Haibo,GAO Shuya,WANG Fen,LU Yawen. Dielectric and Energy Storage Property of BaTiO₃-ZnNb₂O₆ Ceramics[J]. Journal of Inorganic Materials, 2020, 35(4): 431-438.

图/表 8

图1 BTZN陶瓷不同烧结温度的密度, 插图为不同ZN含量BTZN陶瓷最佳烧结温度和密度

Fig. 1 Density as a function of sintering temperature for BTZN ceramics with inset showing the optimum sintering temperature and density of BTZN ceramics with different ZN content

图2 (a)BTZN陶瓷XRD图谱和(b)31°~32°放大图谱

Fig. 2 (a) XRD patterns of BTZN ceramics and (b) enlarged XRD patterns from 31° to 32° of BTZN ceramics

图3 BTZN陶瓷热腐蚀的SEM照片 (a) BTZN1; (b) BTZN2; (c) BTZN3; (d) BTZN4; (e) BTZN5; (f) BTZN6

Fig. 3 SEM images of polished and thermally etched BTZN ceramics

图4 BTZN陶瓷的介电性能频率稳定性

Fig. 4 Frequency stability of dielectric properties for BTZN ceramic (a) Frequency dependence of dielectric constant (lines are linear fitting results) with inset showing the fitting values of a and b with different ZN content, and (b) frequency dependence of dielectric loss, (c) FCC, and (d) FCC as a function of ZN content

图5 BTZN陶瓷-100~500 ℃的介电常数和介电损耗

Fig. 5 Temperature dependence of dielectric constant and loss of BTZN ceramics from -100 ℃ to 500 ℃ (a)BTZN1; (b) BTZN2; (c) BTZN3; (d) BTZN4; (e) BTZN5; (f) BTZN6

图6 BTZN陶瓷1 MHz下基于25 ℃的TCC

Fig. 6 TCC of the BTZN ceramics at the frequency of 1 MHz and a base temperature of 25 ℃

图7 BTZN陶瓷击穿电场下室温电滞回线(10 Hz), 箭头方向为ZN含量增大方向, 插图为不同ZN含量BTZN陶瓷BDS

Fig. 7 P-E loops of BTZN ceramics at critical electric field, room temperature and 10 Hz with direction of the arrow indicating the direction in which the ZN content increases with inset showing the BDS of BTZN ceramics with different ZN contents

图8 BTZN陶瓷储能性能

Fig. 8 Energy storage properties of BTZN ceramics Pmax, Pr and Pmax-Pr of BTZN ceramics at 100 kV/cm; (b) Energy storage density (W); (c) Recoverable energy storage density (Wrec); (d) Energy loss density (Wloss); (e) Energy storage efficiency (η) as a function of electric field; (f) Variations of W, Wrec, Wloss and η at critical electric field with different ZN contents

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BaTiO₃-ZnNb₂O₆陶瓷介电及储能性能研究

Dielectric and Energy Storage Property of BaTiO₃-ZnNb₂O₆ Ceramics

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