Supercapacitor batteries are also called gold capacitors and farad capacitors. They store energy through polarized electrolytes and are a type of electric double layer capacitors. Since the energy storage process does not undergo chemical reactions, this energy storage process is reversible, precisely because the supercapacitor can be repeatedly charged and discharged hundreds of thousands of times. Supercapacitors generally use activated carbon electrode materials, which have the characteristics of large adsorption area and more electrostatic storage, and are widely used in new energy vehicles.