What is the thermal stability of film capacitors?

In addition, the film capacitors exhibit good thermal stability over the temperature range of −100 to 225 °C and fatigue properties (10 6 cycles). Importantly, the energy storage density reaches 62.3 J cm −3 at 225 °C, and the energy storage efficiency is as high as ∼81%.

What is the energy storage density of metadielectric film capacitors?

The energy storage density of the metadielectric film capacitors can achieve to 85 joules per cubic centimeter with energy efficiency exceeding 81% in the temperature range from 25 °C to 400 °C.

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).

What is a film capacitor?

Notably, the film capacitor exhibits outstanding high-temperature energy storage capabilities and remarkable stability over a wide temperature range, from room temperature up to 320 °C. Moreover, these capacitors offer versatility across a broad range of operating frequencies and demonstrate exceptional resistance to fatigue.

Why do film capacitors improve energy storage performance?

The enhancement of the energy storage performance originates from strengthening the breakdown strength and polarization switching behavior. In addition, the film capacitors exhibit good thermal stability over the temperature range of −100 to 225 °C and fatigue properties (10 6 cycles).

Can lead-free dielectric film capacitors be used for high-energy storage?

Lead-free dielectric film capacitors are widely used in electronic devices and power systems. However, the relatively low energy density and poor stability have become the bottlenecks restricting their further application. In this work, we demonstrate that the high-energy storage density (114.49 J cm−3) can