Solid-state dielectric energy storage capacitor

What are energy storage capacitors?

Capacitors exhibit exceptional power density, a vast operational temperature range, remarkable reliability, lightweight construction, and high efficiency, making them extensively utilized in the realm of energy storage. There exist two primary categories of energy storage capacitors: dielectric capacitors and supercapacitors.

Do dielectric capacitors have high energy storage performance?

Nature Communications 16, Article number: 1300 (2025) Cite this article Dielectric capacitors with high energy storage performance are highly desired for advanced power electronic devices and systems.

Why do electronic systems need dielectric capacitors?

Dielectric capacitors are highly desired for electronic systems owing to their high-power density and ultrafast charge/discharge capability. However, the current dielectric capacitors suffer severely from the thermal instabilities, with sharp deterioration of energy storage performance at elevated temperatures.

Is there a gap between dielectric capacitors and electrochemical capacitors?

Even though strenuous efforts have been dedicated to closing the gap of energy storage density between the dielectric capacitors and the electrochemical capacitors/batteries, a single-minded pursuit of high energy density without a near-zero energy loss for ultrahigh energy efficiency as the grantee is in vain.

Are dielectric capacitors better than lithium-ion batteries?

Compared with the lithium-ion batteries, the energy storage density of dielectric capacitors is lower. To miniaturize the size of the pulsed power devices, it is necessary to further improve the energy storage density.

What is a dielectric capacitor?

Nature Communications 15, Article number: 6596 (2024) Cite this article Dielectric capacitors are highly desired for electronic systems owing to their high-power density and ultrafast charge/discharge capability.