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.
作者
卫芳彬
张雷阳
王颖
李洋
刘岗
WEI Fangbin;ZHANG Leiyang;WANG Ying;LI Yang;LIU Gang(School of Materials and Energy,Southwest University,Chongqing 400715)
出处
《材料导报》
EI
CAS
CSCD
北大核心
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)~~
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
bismuth sodium titanate
dielectric energy storage
temperature stability
relaxor ferroelectric
cerium dioxide
作者简介
卫芳彬,2016年9月就读于西南大学材料与能源学院,主要研究领域为功能陶瓷;刘岗,英国伯明翰大学博士。现为西南大学材料与能源学院副教授。主要研究方向为功能陶瓷材料,包括介电、铁电、压电陶瓷等。liugang13@swu.edu.cn.
