Issue 33, 2022

Perspective on interface engineering for capacitive energy storage polymer nanodielectrics

Abstract

Polymer nanodielectrics with high breakdown strength (Eb), high energy density (Ue) and low energy loss have great potential to be used as capacitive energy storage materials of high-voltage film capacitors in modern electrical and electronic equipment, such as smart grids, new energy vehicles and pulse powered weapons. Usually, inorganic nanoparticles with high dielectric constant (εr) are added into a high Eb polymer matrix to achieve simultaneously enhanced εr and Eb, thus leading to nanodielectrics with high Ue. However, this strategy was seriously hampered by the uneven distribution of electric fields and inhomogeneous microstructures of the multi-phased nanodielectrics until increasing research work was focused on interface engineering. Recent progress in nanocomposites suggests that interface engineering plays a critical role in regulating the polarization and breakdown behaviors of the nanodielectrics, such as balancing εr and Eb, enhancing Ue and energy discharge efficiency (η). This article highlights the recent advances in the interface engineering of polymer nanodielectrics, including theoretical models, interface engineering strategies, and the latest characterization and fabrication techniques of high performance nanodielectrics. Finally, the challenges and opportunities in the interface engineering of the nanodielectrics in film capacitors are discussed and predicted from a practical point of view.

Graphical abstract: Perspective on interface engineering for capacitive energy storage polymer nanodielectrics

Article information

Article type
Review Article
Submitted
20 Jun. 2022
Accepted
31 Jul. 2022
First published
03 Aug. 2022

Phys. Chem. Chem. Phys., 2022,24, 19624-19633

Perspective on interface engineering for capacitive energy storage polymer nanodielectrics

Y. Xie, X. Fan, X. Li, Y. Zhang, Z. Zhang and X. Huang, Phys. Chem. Chem. Phys., 2022, 24, 19624 DOI: 10.1039/D2CP02783F

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