Super capacitor is the energy storage device between the capacitor and the battery,it not only has a feature of a quick charge and discharge of capacitors,but also has a mechanism of energy storage of electrochemical  battery. Supercapacitors can be divided into two categories, electric double layer capacitors (DLC) and electrochemical capacitors.
As new energy storage devices, electrochemical capacitors can be thousands of Fala to achieve rapid charge and discharge and high current power generation, besides,it has a higher power density than the battery (up to 1,000 W / kg) and longer cycle life (up to 10 million times for charge and discharge), in addition,it can be applicated at very low temperatures and other extreme environments while has no environmental pollution.These features make electrochemical capacitors have potential market in electric vehicles, communications, consumer and entertainment electronics, signal monitoring and other areas.Some experts predict the current annual demand is up to 21.5 million just from the Chinese market, while the total demand throughout the Asia Pacific region is more than 90 million. According to report from U.S. market research firm Frost & Sullivan,the output and sales will keep a high rapid growth.