Film capacitor energy storage

Are flexible dielectric film capacitors suitable for energy storage?

Cite this: ACS Appl. Mater. Interfaces 2019, 11, 5, 5247–5255 As passive components in flexible electronics, the dielectric capacitors for energy storage are facing the challenges of flexibility and capability for integration and miniaturization. In this work, the all-inorganic flexible dielectric film capacitors have been obtained.

What are metallized film capacitors?

Metallized film capacitors towards capacitive energy storage at elevated temperatures and electric field extremes call for high-temperature polymer dielectrics with high glass transition temperature (Tg), large bandgap (Eg), and concurrently excellent self-healing ability.

Are ferrite-based film capacitors efficient?

Pan, H. et al. Giant energy density and high efficiency achieved in bismuth ferrite-based film capacitors via domain engineering. Nat. Commun. 9, 1813 (2018). Chen, X. et al. Giant energy storage density in lead-free dielectric thin films deposited on Si wafers with an artificial dead-layer. Nano Energy 78, 105390 (2020).

Are polymer dielectrics suitable for high-temperature film capacitors?

Film capacitors based on polymer dielectrics face substantial challenges in meeting the requirements of developing harsh environment (≥150 °C) applications. Polyimides have garnered attention as promising dielectric materials for high-temperature film capacitors due to their exceptional heat resistance.

What is the cyclability of film capacitors based on polymer dielectrics?

A record-high energy density of ∼4.9 J/cm 3 with η > 95 % is obtained at 150 °C. Stable cyclability over 100,000 cycles under 400 MV/m at 150 °C is achieved. Film capacitors based on polymer dielectrics face substantial challenges in meeting the requirements of developing harsh environment (≥150 °C) applications.

Are all-inorganic flexible dielectric film capacitors effective?

In this work, the all-inorganic flexible dielectric film capacitors have been obtained. The flexible capacitors show a desirable recoverable energy density ( Wrec) of 40.6 J/cm 3 and a good energy efficiency (η) of 68.9%.