无铅非线性介电储能陶瓷材料研究进展

Progress on lead-free nonlinear dielectric ceramic materials for energy storage

介电储能陶瓷材料具有能量密度高及充放电快等优点,被认为是脉冲功率储能电容器的优秀候选材料.目前应用的介电储能陶瓷材料的储能密度较低且大多数含有铅元素,使其实际应用受到阻碍,因此,高储能密度的无铅介电储能陶瓷材料成为研究热点.该文概述提高无铅非线性介电陶瓷材料储能密度的有效方法,分别介绍钛酸铋钠(Na0.5Bi0.5TiO3)基、钛酸钡(BaTiO3)基及铌酸银(AgNbO3)基陶瓷的最新研究进展,并对无铅非线性介电储能陶瓷材料后续研究进行展望。

Dielectric energy storage ceramic materials are considered as a potential candidate for ideal pulsed-power devices because of their high power density and fast of charge-discharge characteristics. However,the low energy storage density of dielectric energy storage ceramic materials and the fact that most of them contain lead hinder their practical application. Lead-free dielectric energy storage ceramic materials with high energy storage density have become a research hotspot. Research activities have now been focused on lead-free dielectric energy storage ceramic materials with high energy storage density. In this paper,the effective methods to improve the energy storage density of lead-free nonlinear dielectric ceramics were reviewed. The recent research progress of sodium bismuth titanate (Na 0.5 Bi 0.5 TiO 3),barium titanate (BaTiO 3) and silver niobate (AgNbO 3) based ceramics were introduced respectively. The future research of lead-free nonlinear dielectric ceramics was also discussed.