Ameliorative energy-storage properties stemmed from the refined grains in PBLZS antiferroelectric ceramics via introducing liquid phase sintering

The low breakdown strength (BDS) of antiferroelectric ceramics, which become failure before undergoing electrical field induced antiferroelectric-ferroelectric phase transition, have seriously restricted the progress of pulsed power capacitors. The method of refining grain sizes via the incorporation of glass additive is supposed to be an outstanding strategy to boost the BDS. Herein, the (Pb0.91Ba0.015La0.05)(Zr0.6Sn0.4)O-3 (PBLZS) antiferroelectric ceramics with the introduce of BaO-B2O3-Al2O3-SiO2 (BBAS) glass are designed and synthesized by a traditional solid-state reaction. When the glass content is 0.4 wt%, the recoverable energy storage density (Wrec) increases by 215 % from 2.0 J/cm(3) to 6.3 J/cm(3), together with a greatly enhanced BDS up to 390 kV/cm versus 270 kV/cm of pure ceramics. Meanwhile, the corresponding sintering temperature is remarkably decreased from 1300 degrees C to 1100 degrees C. The superior charge and discharge performance can be obtained under the electrical field of 310 kV/cm, including a giant current density (1184.7 A/cm(2)), a high power density (184.2 MW/cm(3)), and an ultra-fast discharge period (40 ns). The prominent energy storage properties and low sintering temperature make it become a good candidate for fabricating multilayer pulsed power ceramic capacitors.

Automated summary

The incorporation of glass additive in antiferroelectric ceramics can significantly enhance breakdown strength and energy storage density, while reducing sintering temperature, leading to improved charge and discharge performance.