Enhanced energy storage performance of silver niobate-based antiferroelectric ceramics by two-step sintering mothed

AgNbO3 lead-free antiferroelectric (AFE) ceramics are attractive candidates for energy storage applications and power electronic systems. In this study, AgNbO3 ceramics are synthesized by single-step sintering (SSS) and two-step sintering (TSS) processes under oxygen-free atmosphere, and their energy storage performance is compared. The prepared ceramic materials show characteristic AFE double hysteresis (P–E) loop and excellent energy storage performance. Especially, the AgNbO3 ceramic materials prepared by TSS achieve a maximum recoverable storage density (Wrec) of 2.32 J/cm3 under 150 kV/cm by reducing the remnant polarization (Pr), which is 36