Energy storage properties of PLZST-based antiferroelectric ceramics with glass additives for low-temperature sintering

PLZST-based antiferroelectric (AFE) ceramics with high recoverable energy density (W re ) and efficiency (η) can be applied to pulsed power electronic devices. However, this application is constrained by the high sintering temperature (ST, 1250–1320 °C) of the ceramics per se. In this context, this study introduced a new glass phase of Ba 2 CO 3 –Al 2 O 3 –SiO 2 –K 2 CO 3 (BASK) into Pb 0.95 La 0.02 Sr 0.02 (Zr 0.50 Sn 0.40 Ti 0.10 )O 3 (PLSZST) AFE ceramics by using a traditional solid-state method. By doping 0.5 wt% BASK, the ST of PLSZST ceramics was significantly reduced from 1300 °C to 1020 °C and a high W re of 3.54 J/cm 3 and a high η of 86% were yield, when the electric breakdown strength increased to 230 kV/cm. In addition, a pulse discharge energy density of 2.47 J/cm 3, and an extremely fast discharge speed (<0.5 μs), as well as acceptable thermal stabilities of both W re and η within 30–110 °C temperature range, were achieved. Conclusively, this AFE ceramic composition with glass additives has a great potential to be used in base metal inner-electrode multilayer ceramic capacitors for pulse power applications.