Abstract
AgNbO3 has broad research prospects in dielectric energy storage due to its unique antiferroelectric properties. The enhancement of ferroelectric/antiferroelectric phase stability can be achieved by tuning the tolerance factor t of AgNbO3-based ceramics. On the other hand, the stability of the antiferroelectric and ferroelectric phases can be improved by adjusting the phase transition temperature of AgNbO3-based ceramics. This is of great significance and value to the research and development of lead-free energy storage materials. Although there have been many studies on the energy storage performance of AgNbO3-based ceramic materials, there are still challenges in achieving high energy storage density and energy efficiency at the same time. This review discusses the optimization strategy, preparation technology, and sintering technology of AgNbO3-based ceramics, summarizes the current research progress and obstacles, and puts forward the development direction for the application of AgNbO3-based ceramics.