A Broad-High Temperature Ceramic Capacitor with Local Polymorphic Heterogeneous Structures.

ABSTRACT: Crafting high-performance dielectrics tailored for pulsed power capacitors, in response to the escalating demands of practical applications, presents a formidable challenge. Herein, this work introduces a novel lineup of lead-free ceramics with local polymorphic heterogeneous structures, defined by the formula (1-x)[0.92BaTiO₃-0.08Sr(Mg_1/2Ti_3/4)O₃]-x(Na_0.5Bi_0.5)TiO₃ (BT-SMT-xNBT). This innovative multi-scale synergistic strategy, spanning from the atomic to grain scale, yields materials with a giant recoverable energy density (W_rec) of 10.1 J·cm^-3 and an impressive energy efficiency (η) of 95.0%. The integration of linear end elements SMT can significantly mitigate the polarization hysteresis

SUBMITTER: Zheng B 

PROVIDER: S-EPMC11714191 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature