B位Fe^(3+)掺杂Na_(0.5)Bi_(0.49)TiO_(3)陶瓷的电导性能  

Electrical conductivity of B-site Fe^(3+) doped Na_(0. 5)Bi_(0. 49)TiO_(3) ceramic

作　　者：杨斌 李博锐 程婉婉 高玄玄 来龙飞 谢宁 YANG Bin;LI Borui;CHENG Wanwan;GAO Xuanxuan;LAI Longfei;XIE Ning(School of Chemistry and Chemical Engineering,Ankang University,Ankang 725000,Shaanxi,China;Ankang Research Centre of New Nano-materials Science and Technology,Ankang 725000,Shaanxi,China;Shaanxi University Innovation Research Institute of Advanced Energy Storage Materials and Battery Technology for Future Industrialization,Ankang 725000,Shaanxi,China)

机构地区：[1]安康学院化学化工学院,陕西安康725000 [2]安康市纳米新材料工程技术研究中心,陕西安康725000 [3]陕西省高校先进储能材料与电池技术未来产业创新研究院,陕西安康725000

出　　处：《材料工程》2024年第5期195-202,共8页Journal of Materials Engineering

基　　金：安康学院高层次人才科研启动项目(2020AYQDZR12);陕西省大学生创新创业训练计划项目(S202311397016)。

摘　　要：采用固相合成法制备了x=0,0.02,0.04和0.06的Na_(0.5)Bi_(0.49)Ti_(1-x)Fe_(x)O_(3-δ)(NBT)粉末材料,经压制成型并在1000~1150℃烧结制备了片状陶瓷样品。通过XRD,SEM和EIS测试研究了Fe^(3+)掺杂量x对NBT陶瓷性能的影响。结果表明,NBT材料在掺杂Fe^(3+)后出现了新相NaBiTi_(6)O_(14),且含量随x的增加而变多。材料在掺杂后的烧结温度降低了100~150℃,同时材料的晶粒变得细小。在300~700℃测试温度范围内,x=0.02,0.04和0.06的样品的电导率在相同温度下都处于同一数量级,相对于x=0的样品的电导率提升了约1000倍。x=0.04的样品具有最高的电导率,在600℃和700℃的测试温度下,电导率分别达到9.8 mS/cm和17.0 mS/cm。Na_(0.5)Bi_(0.49)Ti_(1-x)Fe_(x )O_(3-δ)(NBT) powder materials with x=0,0.02,0.04,and 0.06 were prepared by solid-state synthesis method.Flaky ceramic samples were prepared by pressing and sintering at 1000-1150℃.The effect of Fe^(3+)doping amount x on NBT ceramic properties was studied by XRD,SEM and EIS testing.The results show that a new phase NaBiTi_(6)O_(14) appears in the NBT material after Fe^(3+)doping,and the content increases with the increase of doping amount.After doping,the sintering temperature of the sample decreases by 100-150℃,while the grains become smaller.Within the testing temperature range of 300-700℃,the conductivity of samples with x=0.02,0.04,and 0.06 is on the same order of magnitude at the same temperature,which are about 1000 times higher than that of samples with x=0.The sample with x=0.04 has the highest conductivity,reaching 9.8 mS/cm and 17.0 mS/cm at the test temperatures of 600℃and 700℃,respectively.

关 键 词：Na_(0.5)Bi_(0.49)TiO_(3) Fe^(3+)掺杂 电导率 氧离子导体 

分 类 号：TQ174[化学工程—陶瓷工业]