Ultracapacitor, super Capacitor (supercapacitor), also called the electric double Layer Capacitor (Electrical Doule - Layer Capacitor), gold capacitors, farad capacitors, energy storage by polarization electrolyte. It is an electrochemical element, but no chemical reaction occurs during the process of storing energy. The process is reversible, which is why supercapacitors can be recharged and discharged hundreds of thousands of times.

Supercapacitor is a new type of green energy storage device (activated carbon), which has the advantages of high efficiency, high current capacity, wide voltage range, wide temperature range, long service life, long working life, maintenance-free and easy maintenance, simple integration, bottom cost and so on. It has a broad prospect for development.