Some mature battery technologies, such as lithium-ion battery, nickel hydrogen battery and lead-acid battery, have been developed and matured. Because of the chemical reaction during the charge and discharge process, its development is limited. Therefore, the improvement of battery performance mainly depends on the improvement of packaging technology and the enhancement of preparation process. Super capacitor technology is still in its infancy stage, which has high development potential. Compared with chemical battery limited by battery fixed structure, supercapacitor mainly relies on the physical properties of materials for energy storage. At the same time, compared with other mainstream batteries, supercapacitors still do not make full use of the potential of surface energy storage, and do not get rid of the "workshop" manufacturing mode and the shortage of raw materials.
