What is a supercapacitor?

Supercapacitor, also known as electrochemical capacitor, is a new type of energy storage device developed in 1970s and 1980s, which is between traditional capacitor and battery. Its capacitance reaches farad level, which is 2000 ~ 6000 times larger than the electrolytic capacitor with the same volume. The power density is 10 ~ 100 times that of the battery, and it can be charged and discharged with high current, with high charging and discharging efficiency, and the cycle charging and discharging times can reach more than 105 times, without maintenance and without pollution to the environment.