High-temperature capacitive energy stroage in polymer nanocomposites through nanoconfinement.

ABSTRACT: Polymeric-based dielectric materials hold great potential as energy storage media in electrostatic capacitors. However, the inferior thermal resistance of polymers leads to severely degraded dielectric energy storage capabilities at elevated temperatures, limiting their applications in harsh environments. Here we present a flexible laminated polymer nanocomposite where the polymer component is confined at the nanoscale, achieving improved thermal-mechanical-electrical stability within the resulting nanocomposite. The nanolaminate, consisting of nanoconfined polyetherimide (PEI) polymer sandwiched between solid Al₂O₃ layers, exhibits a high energy density of 18.9 J/cm³ with a high energy efficiency of ~ 91% at elevated temperature of 200°C. Our work demonstr

SUBMITTER: Li X 

PROVIDER: S-EPMC11303793 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature