Ultra-high energy storage in relaxor ferroelectric MLCCs at elevated temperatures via entropy modulated strain heterogeneity.

ABSTRACT: Multilayer ceramic capacitors are pivotal components in pulse power systems due to their ultra-high power density. However, given the demanding service conditions in aerospace and oil drilling applications, the need to enhance high-temperature energy storage remains particularly urgent. In this work, we employ a strain modulation strategy by enhancing configuration entropy within bismuth sodium titanate-based ceramics. This approach enhances relaxor behavior, suppresses electron migration, and improves structural stability and breakdown strength at elevated temperatures. Notably, the resulting multilayer ceramic capacitors exhibit a substantial recoverable energy density of 19.0 J cm^-3 and an impressive efficiency of 90% under an electric field of 1320 kV cm^-1. Furthe

SUBMITTER: Kang R 

PROVIDER: S-EPMC12518529 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature