Preparation method of carbon black-electrostatically adsorbed carbon nano tube conductive filler

The invention discloses a preparation method of a carbon black-electrostatically adsorbed carbon nano tube conductive filler, and belongs to the technical field of conductive material preparation. The technical problems that in the prior art, the cost is high, and a carbon nano tube is large in specific surface area and difficult to disperse are solved. The preparation method sequentially comprises the following three steps of 1 pretreating, wherein the surface of the carbon nano tube is coated with a layer of a cationic surfactant; 2 electrostatic adsorbing, wherein carbon black is electrostatically adsorbed on carbon nano tube prefabricated powder; 3 standing, filtering and drying. The carbon black-electrostatically adsorbed carbon nano tube conductive filler is obtained.