Sn^(4+)离子改性对BSBNT陶瓷的电储能特性影响研究  

Effect of Sn^(4+) Ion Modification on Electrical Energy Storage Properties of BSBNT Ceramics

作　　者：骆雯琴 李志鹏 袁丽红 李东旭 沈宗洋 LUO Wen-Qin;LI Zhi-Peng;YUAN Li-Hong;Li Dong-Xu;SHEN Zong-Yang(Energy Storage and Conversion Ceramic Materials Engineering Laboratory of Jiangxi Province,China National Light Industry Key Laboratory of Functional Ceramic Materials,School of Materials Science and Engineering,Jingdezhen Ceramic University,Jingdezhen 333403,China)

机构地区：[1]景德镇陶瓷大学材料科学与工程学院中国轻工业功能陶瓷材料重点实验室江西省能量存储与转换陶瓷材料工程实验室,江西景德镇333403

出　　处：《现代技术陶瓷》2022年第1期57-65,共9页Advanced Ceramics

基　　金：江西省自然科学基金重点项目(20212ACB204010);江西省教育厅科学技术研究重点项目(GJJ211301)。

摘　　要：本文采用固相法制备了Ba_(0.105)Sr_(0.215)Bi_(0.345)Na_(0.325)Sn_(x)Ti_(1-x)O_(3)(简称BSBNSn_(x)Ti_(1-x),其中x=0,0.02,0.04,0.06,0.08)陶瓷,研究了SnO_(2)掺杂量对BSBNT陶瓷相结构、显微结构、介电及电储能特性的影响。结果表明:BSBNSn_(x)Ti_(1-x)陶瓷主晶相为赝立方钙钛矿结构,当x≥0.04时出现少量的第二相SnO_(2)。随着x值增加,BSBNSn_(x)Ti_(1-x)陶瓷的介电温度稳定性逐渐增强。x=0.04组成陶瓷在20~300℃的宽温度范围内的容温变化率(TCC)不超过±15%,并具有高的介电常数ε_(r)~3046@1kHz。在较低电场E=115 kV/cm下,BSBNSn_(0.04)Ti_(0.96)陶瓷获得最大有效储能密度W_(rec)=1.86 J/cm^(3),储能效率η=82%,并在30~150℃,1~20 Hz条件下保持良好的温度及频率稳定性,可用于脉冲功率型陶瓷电容器的制作。In this work,Ba_(0.105)Sr_(0.215)Bi_(0.345)Na_(0.325)Sn_(x)Ti_(1-x)O_(3)(abbreviated as BSBNSn_(x)Ti_(1-x),in which x=0,0.02,0.04,0.06,0.08)ceramics were prepared by a solid state reaction method.The effect of SnO_(2)doping amount on the phase structure,microstructure,dielectric and energy storage properties of BSBNT ceramics was investigated.The results show that the main crystal of BSBNSnxTi1-xceramics was pseudo-cubic perovskite structure,and small amount of second phase SnO_(2)was detected when x≥0.04.The dielectric temperature stability of BSBNSn_(x)Ti_(1-x)ceramics was gradually enhanced with increasing x value.When x=0.04,the temperature coefficient of capacitance(TCC)in a wide temperature range of 20~300℃does not exceed±15%,accompanied by a high dielectric constantε_(r)~3046@1 kHz.Under a relatively low electric field of E=115 kV/cm,the maximum recovery energy storage density W_(rec)=1.86 J/cm^(3)and efficiencyη=82%were obtained in BSBNSn_(0.04)Ti_(0.96) ceramics.Meanwhile,it can maintain good temperature and frequency stability at 30~150℃and 1~20 Hz,which can be used for the manufacture of pulse power ceramic capacitors.

关 键 词：储能陶瓷 弛豫铁电体 BNT BST 脉冲功率电容器 

分 类 号：TB282[一般工业技术—工程设计测绘]