Carbocyclic ring layer spacing expansion treatment preparation method of supercapacitor electrode material activated carbon

The invention discloses a carbocyclic ring layer spacing expansion treatment preparation method of supercapacitor electrode material activated carbon. According to the method, the finished product activated carbon prepared by a three-step physical activation process is treated, and the characteristic that CO2 and C are not prone to violent oxidation at a certain high temperature is combined, carbon dioxide atmosphere is introduced, and a weak reaction is caused by controlling the reaction temperature and prolonging the calcination time so as to form vacancies (defects) in the carbocyclic layers, so that the Van der Waals bond interlayer force between the carbon layers is reduced, and the interlayer spacing of the graphite carbocyclic layers is regulated and controlled. The carbon ring interlayer spacing of the prepared activated carbon is 0.384-0.405 nm and is far larger than the 0.335 nm carbon ring interlayer spacing of normal graphite, when the activated carbon is used as a supercapacitor electrode materia