Enhanced energy storage properties of Ta5+ doped AgNbO3 lead-free antiferroelectric ceramics

This study delves into the enhanced energy storage properties of Ta5+ doped AgNbO3 lead-free antiferroelectric ceramics. The research focuses on the significant improvements in energy storage density and breakdown strength achieved through Ta-doping and hydrothermal synthesis. The study explores the synthesis and characterization of Ag(Nb1−xTax)O3 ceramics, highlighting the impact of Ta5+ doping on the material's properties. The results demonstrate a remarkable increase in recoverable energy storage density (Wrec) up to 6.34 J·cm−3 and breakdown strength (Eb) exceeding 400 kV·cm−1. The study also investigates the phase transitions and dielectric properties of the ceramics, providing valuable insights into the mechanisms behind the enhanced performance. The conclusions underscore the efficacy of Ta-doping and hydrothermal synthesis in elevating the energy storage properties of AgNbO3-based antiferroelectric ceramics, offering a promising avenue for developing high-performance, lead-free energy storage materials.