With the progress of science and technology, people are paying more and more attention to ecological environment protection and the use of green power. As a new type of energy storage component, supercapacitor has attracted extensive attention. Supercapacitor is a new type of energy storage equipment developed in the 1970s and 1980s between batteries and traditional capacitors. Its appearance fills the gap between traditional electrostatic capacitors and chemical power sources.

Supercapacitor is a kind of physical secondary power supply with super power storage ability, which can provide strong pulsating power. Farad capacitor According to the energy storage mechanism, it can be divided into three categories: ① capacitance with oxidation recovery reaction by using conductive polymer as electrode; ② Double layer capacitance generated by charge separation on the interface between carbon electrode and electrolyte; ③ A Faraday capacitor with reversible chemisorption on the surface and bulk phase of the electrode by using metal oxide as the electrode.

Electric double layer supercapacitor is a new type of energy storage equipment that stores electric energy by polarized electrolyte. The high-power supercapacitor can replace the battery for this operation because of its fast charging and discharging and long cycle life. Although the initial investment cost is high, the cost is lower than that of frequently protecting and replacing the battery. At the same time, the operation intensity can be reduced.

Super capacitors are mainly discussed in China, Japan, South Korea, France, Germany, Canada and the United States. From the perspective of manufacturing planning and technical level, Asia is temporarily ahead. Super capacitor manufacturer The capacitance of a super capacitor cell can reach several to tens of thousands of methods. Super capacitor module This structure uses special technology to make its equivalent resistance very low, capacitance very large, and internal resistance small, so that the supercapacitor has a very high peak current, so the supercapacitor has a very high specific power. Its power density is 50~100 times that of the battery, and can reach 10 × About 103W/kg, this feature makes super capacitors very suitable for use in short-time high-power occasions.