Question

what is meant by super capacitor?

Answer 1

a super capacitor is a high-capacity capacitor with capacitance values much higher than the other capacitors that bridge the gap between electrolytic capacitor and rechargeable batteries 

Answer 2

Super capacitors, also known as ultracapacitors, electric double-layer capacitors, supercondensers, electrochemical double layer capacitors and pseudocapacitors, do not have a conventional dielectric. They instead have plates that are filled with two layers of an identical substance, which allows for separating the charge. Without the need for a dielectric, the plates of a supercapacitor are packed with a larger surface area, therefore resulting in high capacitance. A supercapacitor contains a positive cathode which uses activated carbon material. Charges are stored in an electric double layer. Development of the layer happens at the interface between the electrolyte and the carbon.