Super capacitor refers to a new type of energy storage device between traditional capacitors and rechargeable batteries. It not only has the characteristics of fast charging and discharging of capacitors, but also has the energy storage characteristics of batteries. The Super capacitor classification method is:

First, according to different energy storage mechanisms, supercapacitors can be divided into two categories: electric double-layer capacitors and Faraday quasi-capacitors. Among them, the electric double-layer capacitor mainly generates stored energy through the adsorption of pure electrostatic charges on the electrode surface. Faraday quasi-capacitors mainly generate Faraday quasi-capacitors through Faraday quasi-capacitance active electrode materials (such as transition metal oxides and high molecular polymers) on the surface and near the surface of the reversible redox reaction to generate Faraday quasi-capacitors, thereby achieving energy storage and conversion.

Secondly, according to the type of electrolyte, it can be divided into two categories: water-based supercapacitors and organic supercapacitors.

In addition, according to whether the types of active materials are the same, they can be divided into symmetric supercapacitors and asymmetric supercapacitors.

Finally, according to the state and form of the electrolyte, supercapacitors can be divided into solid electrolyte supercapacitors and liquid electrolyte supercapacitors.

Super capacitors are a new type of green energy storage device. Electrochemical capacitors (also called super capacitors) have the dual functions of traditional capacitors and batteries. They have fast charging speed, large discharge current, high efficiency, small size and long cycle life. , Wide operating temperature range, good reliability, maintenance-free and green and environmental protection, etc. It has huge application value and market potential in automobiles, power, railways, communications, national defense, consumer electronics, etc., which has attracted domestic and foreign scientific research institutions , The manufacturer attaches great importance to it, so it has broad application prospects in various fields of human life and production.