Helsinki Super Electrochemical Capacitor

Are electrochemical supercapacitors effective in Microsystems?

Electrochemical supercapacitors stand out with their superior capacitance density, surpassing traditional electrolytic capacitors by at least two orders of magnitude. However, the intrinsic slow ion dynamics of electrical double layer effects greatly limit supercapacitors characteristic frequency, constraining their applicability in microsystems.

How do supercapacitors perform electrochemically?

The electrochemical performances of supercapacitors primarily hinge on the core components, electrodes materials. Based on the capacitive energy storage mechanism, supercapacitors have been divided into electrical double-layer capacitors (EDLCs) and pseudocapacitance.

Why do microelectronics need supercapacitors?

The prosperity of microelectronics has intensified the requirement for miniaturized power systems using capacitors with high capacity and broad frequency ranges. Electrochemical supercapacitors stand out with their superior capacitance density, surpassing traditional electrolytic capacitors by at least two orders of magnitude.

What is hybrid electrochemical electrolytic capacitor design?

To address this limitation, we introduce a Hybrid Electrochemical Electrolytic Capacitor design, which asymmetrically coupling the electrochemical and dielectric effects. At low frequencies, the electrochemical segment provides sufficient capacity, while its electrolytic segment takes over at high frequencies, broadening the frequency range.