BaTiO3-ZnNb2O6陶瓷介电及储能性能研究  

Dielectric and Energy Storage Property of BaTiO3-ZnNb2O6 Ceramics

作　　者：王通 王渊浩 杨海波[1] 高淑雅[1] 王芬[1] 鲁雅文 WANG Tong;WANG Yuanhao;YANG Haibo;GAO Shuya;WANG Fen;LU Yawen(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;Xianyang Research and Design Institute of Ceramics Co.Ltd,Xianyang 712000,China)

机构地区：[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

出　　处：《无机材料学报》2020年第4期431-438,共8页Journal of Inorganic Materials

基　　金：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)。

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/cm3的可释放能量密度。(1–x)BaTiO3-xZnNb2O6(x=0.5 mol%, 1 mol%, 1.5 mol%, 2 mol%, 3 mol%, 4 mol%)(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 3 mol%. 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 X8 R 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/cm3 were achieved in the sample of x=4 mol%.

关 键 词：钛酸钡 陶瓷 介电性能 储能性能 

分 类 号：TQ174[化学工程—陶瓷工业]