Ultra-High Capacitive Energy Storage Density at 150 °C Achieved in Polyetherimide Composite Films by Filler and Structure Design

Ultra-High Capacitive Energy Storage Density at 150 °C Achieved in Polyetherimide Composite Films by Filler and Structure Design

© 2024 Wiley‐VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - (2024) vom: 15. Dez., Seite e2415652
1. Verfasser: Guo, Yan (VerfasserIn)
Weitere Verfasser: Zhao, Weichen, Li, Da, Liu, Jinnan, Qian, Jin, Pang, Lixia, Zhou, Tao, Liu, Wenfeng, Liu, Zhaobo, Huang, Houbing, Zhai, Jiwei, Zhou, Di
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article BNKT‐BST/PEI nanocomposite charging/ discharging efficiency discharged energy density high‐temperature
Beschreibung
Zusammenfassung:© 2024 Wiley‐VCH GmbH.
Polymer dielectrics are crucial for electronic communications and industrial applications due to their high breakdown field strength (Eb), fast charge/discharge speed, and temperature stability. The upcoming electronic-electrical systems pose a significant challenge, necessitating polymeric dielectrics to exhibit exceptional thermal stability and energy storage capabilities at high temperatures. Here, ultra-high dielectric constant (ɛr) and charge/discharge efficiency (η) of 0.55Bi0.5(Na0.84K0.16)0.5TiO3-0.45(Bi0.1Sr0.85)TiO3 (BNKT-BST) ceramics are prepared by the solid-phase reaction method and added to polyetherimide (PEI) to form BNKT-BST/PEI nanocomposites with various structures. The findings indicate that the sandwich-structured BNKT-BST/PEI nanocomposite achieves the highest discharged energy density (Ud) of 7.7 J cm-3 with η of 80.2% when the Eb is 650 MV m-1 at 150 °C. This is primarily due to the incorporation of BNKT-BST nanoparticles and the multilayer structure design, which significantly improves the composite's ɛr and Eb. Additionally, the sandwich-structured composites show excellent cycling stability at 500 MV m-1 and 150 °C, with Ud of ≈ 4.7 J cm-3 and η greater than 90%. The research presents nanocomposites with high energy storage density and excellent stability, crucial for the practical application of polymer dielectrics in high-temperature environments
Beschreibung:Date Revised 16.12.2024
published: Print-Electronic
Citation Status Publisher
ISSN:1521-4095
DOI:10.1002/adma.202415652