In this work, the Pb 0.97 La 0.02 Zr 0.85 Sn 0.12 Ti 0.03 O 3 (PLZST) antiferroelectric composite films with aluminum oxide (Al 2 O 3 ) film as a double-blocking layer have been designed and successfully prepared via the sol−gel method. The energy storage characteristics, electrical properties, charge−discharge performance, and temperature stability of the composite films were studied systematically. As a result, by engineering the Al 2 O 3 double-blocking layer on both sides of the antiferroelectric films, the breakdown strength of the composite films increases by 126% from 66.5 to 150.4 kV/ mm and the recoverable energy storage density was significantly enhanced from 10.2 to 27.7 J/cm 3 . Meanwhile, the discharge period has been measured as well, which is only 104 ns, resulting in a large peak current density of 180 A/cm 2 and an extremely high peak power density as high as 90 MW/cm 3 under 100 kV/mm. Furthermore, the composite films exhibited high temperature stabilities; the peak current density and the peak power density change is less than 15% when the temperature range varies from 30 to 100 °C. These results demonstrate that the PLZST films with double-blocking structures are promising candidates for pulse power applications.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.