Polymorphic relaxor phase and defect dipole polarization co-reinforced capacitor energy storage in temperature-monitorable high-entropy ferroelectrics.

ABSTRACT: Energy storage high-entropy ceramics are famous for their ultrahigh power density and ultrafast discharge rate. However, achieving a synchronous combination of high energy density and efficiency along with intelligent temperature-monitorable function remains a significant challenge. Here, based on high-entropy strategy and phase field simulation, the polarization response of domains in Bi_0.5Na_0.5TiO₃-based ceramics is optimized by constructing a concomitant nanostructure of defect dipole polarization and a polymorphic relaxor phase. The optimal ceramic possesses a high recyclable energy storage density (11.23 J cm^-3) and a high energy storage efficiency (90.87%) at 670 kV cm^-1. Furthermore, real-time temperature sensing is e

SUBMITTER: Zeng X 

PROVIDER: S-EPMC11845462 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature