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

所属专题: 功能陶瓷论文精选(二)

• 研究论文 • 上一篇    下一篇

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. 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. 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:

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

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