High-entropy engineered BaTiO₃-based ceramic capacitors with greatly enhanced high-temperature energy storage performance.

ABSTRACT: Ceramic capacitors with ultrahigh power density are crucial in modern electrical applications, especially under high-temperature conditions. However, the relatively low energy density limits their application scope and hinders device miniaturization and integration. In this work, we present a high-entropy BaTiO₃-based relaxor ceramic with outstanding energy storage properties, achieving a substantial recoverable energy density of 10.9 J/cm³ and a superior energy efficiency of 93% at applied electric field of 720 kV/cm. Of particular importance is that the studied high-entropy composition exhibits excellent energy storage performance across a wide temperature range of -50 to 260 °C, with variation below 9%, additionally, it demonstrates great cycling reliability at 450

SUBMITTER: Kong X 

PROVIDER: S-EPMC11750986 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature