Reuse Method Of Active Material Of Positive Electrode Scrap

Abstract: Provided is a method for recovering and reusing an active material from a positive electrode scrap. The method for reusing a positive electrode active material of the present invention comprises the steps of: heat-treating a positive electrode scrap comprising a lithium composite transition metal oxide positive electrode active material layer comprising nickel, cobalt and manganese or aluminum on a current collector to thermally decompose a binder and a conductive material in the active material layer, thereby separating the current collector from the active material layer and recovering an active material in the active material layer; primarily washing the recovered active material with an aqueous lithium compound solution showing basicity in an aqueous solution state; adding a lithium precursor to the washed active material and annealing same; secondarily washing the annealed active material; and obtaining a reusable active material by surface-coating the secondarily washed active material.

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