当前位置: X-MOL 学术J. Eur. Ceram. Soc. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Energy storage properties of NaNbO3-CaZrO3 ceramics with coexistence of ferroelectric and antiferroelectric phases
Journal of the European Ceramic Society ( IF 5.8 ) Pub Date : 2018-07-18 , DOI: 10.1016/j.jeurceramsoc.2018.07.029
Zhiyong Liu , Jinshan Lu , Yuqing Mao , Pengrong Ren , Huiqing Fan

Anti-ferroelectric materials with large saturated polarization, small remnant polarization, and moderate breakdown strength are receiving increasing attention for modern high-power electrical systems. Here we demonstrated that by incorporating CaZrO3 into NaNbO3 ceramics, the antiferroelectricity in NaNbO3-CaZrO3 solid solutions could be stabilized at room temperature. The effects of phase constitution and microstructure on the dielectric properties, electrical breakdown strength, and energy storage properties of the NaNbO3-CaZrO3 ceramics were investigated. Ferroelectric and antiferroelectric phase coexistence in the NaNbO3-CaZrO3 was confirmed by XRD and TEM analyses. With increasing CaZrO3 content, the grain size was reduced, and the dielectric breakdown strength was improved. Therefore, a high energy density of 0.55 J/cm3 and efficiency of 63% was obtained in the NaNbO3-0.04CaZrO3 ceramics. These lead-free NaNbO3-CaZrO3 antiferroelectrics with good electrical energy storage can be exploited for high-power storage devices.



中文翻译:

铁电相和反铁电相共存的NaNbO 3 -CaZrO 3陶瓷的储能性能

具有大的饱和极化,小的残余极化和中等击穿强度的反铁电材料越来越受到现代大功率电气系统的关注。在这里,我们证明了通过将CaZrO 3掺入NaNbO 3陶瓷中,可以在室温下稳定NaNbO 3 -CaZrO 3固溶体中的反铁电性。研究了相组成和微观结构对NaNbO 3 -CaZrO 3陶瓷的介电性能,电击穿强度和储能性能的影响。NaNbO3-CaZrO 3中的铁电和反铁电相共存XRD和TEM分析证实了这一点。随着CaZrO 3含量的增加,晶粒尺寸减小,介电击穿强度提高。因此,在NaNbO 3 -0.04CaZrO 3陶瓷中获得了0.55J / cm 3的高能量密度和63%的效率。这些具有良好电能存储的无铅NaNbO 3 -CaZrO 3反铁电材料可用于大功率存储设备。

更新日期:2018-07-18
down
wechat
bug