二氧化铈掺杂钛酸铋钠基陶瓷的高储能密度及温度稳定性  

High Energy Storage Density and Temperature Stability of CeO2 Doped Bismuth Sodium Titanate-based Ceramics

作　　者：卫芳彬 张雷阳 王颖[1] 李洋[1] 刘岗[1] WEI Fangbin;ZHANG Leiyang;WANG Ying;LI Yang;LIU Gang(School of Materials and Energy,Southwest University,Chongqing 400715)

机构地区：[1]西南大学材料与能源学院

出　　处：《材料导报》2019年第16期2648-2653,共6页Materials Reports

基　　金：国家自然科学基金面上项目(51672226)~~

摘　　要：为制备可应用于脉冲电源电容器领域的高性能电介质陶瓷,本工作通过传统固相反应法制得致密且均匀的NBT-ST基无铅弛豫铁电陶瓷。其中NBT-ST-1Ce陶瓷的室温储能密度达到1.07 J/cm 3,储能效率稳定在80%以上。此外,该陶瓷的储能效率展现了良好的温度稳定性:在25~150℃范围内,储能效率稳定在95%左右。因此,该介质材料在脉冲电源电容器领域具有一定的发展潜力。In order to prepare high performance dielectric ceramics which can be used in the field of pulse power capacitors,a compact and uniform NBT-ST based lead-free relaxor ferroelectric ceramics were prepared by the traditional solid-state reaction method.The energy storage density of NBT-ST-1Ce ceramic sample at room temperature was 1.07 J/cm 3,and the energy storage efficiency was more than 80%.In addition,the ene-rgy storage efficiency of the ceramics showed a very good temperature stability which was around 95%in the temperature range of 25-150℃.Therefore,this kind of dielectric material has exhibited a very good potential in the field of pulse power capacitors applications.

关 键 词：钛酸铋钠 介电储能 温度稳定性 弛豫铁电体 二氧化铈 

分 类 号：O484.4[理学—固体物理]