 Supercapacitors (ULtracapacitor), also known as Electrochemical Capacitors, Electrical double-layer Capacitor, gold Capacitor, farad Capacitor, is a kind of electrochemical device developed in the 1970s and 1980s to store energy through polarized electrolytes. It is different from the traditional chemical power supply, which is between the traditional capacitor and battery and has special performance. It mainly relies on double electric layer and REDOX pseudocapacitance charge to store electric energy. But no chemical reactions take place during its storage, which is reversible, and because of this supercapacitor can be charged and discharged hundreds of thousands of times. Its basic principle is the same as other kinds of double-layer capacitors, which use the double-layer structure composed of activated carbon porous electrode and electrolyte to obtain large capacity. Outstanding advantages are high power density, short charge and discharge time, long cycle life, wide operating temperature range, the world has been put into mass production of double layer capacitor capacity of the largest one. |