The invention relates to the field of preparation of flexible current collectors, in particular to a preparation method of a three-dimensional
carbon nanotube adhesive tape flexible
current collector, and aims to solve the problem that the electrochemical surface area of an electroactive material is limited. According to the invention, the cheap
adhesive tape is used as a flexible support body and an
adhesive, and the
carbon nanotube material is pasted on the adhesive tape; and the three-dimensional
carbon nanotube adhesive tape flexible
current collector is placed in an
electrolyte aqueous solution to be dispersed through a
constant current method or a
constant voltage method, and the three-dimensional carbon
nanotube adhesive tape flexible
current collector is prepared. Compared with the existing two-dimensional flexible current collector, the highly dispersed carbon
nanotube flexible current collector with the three-dimensional structure can disperse and load the electroactive material, so that the electrochemical performance of the constructed
electrode and device is remarkably improved.