METHOD OF RECYCLING CATHODE ACTIVE MATERIAL AND RECYCLED CATHODE ACTIVE MATERIAL PREPARED USING METHOD

The present disclosure relates to a method of recycling a cathode active material and a recycled cathode active material prepared using the method. The method includes: (a) recovering a cathode active material by heat-treating a waste cathode including a current collector and a cathode active material layer coated thereon at 300 to 650° C. under an air or oxygen atmosphere; (b) mixing the recovered cathode active material and a washing solution; (c) filtering the cathode active material mixed with the washing solution; and (d) adding a lithium precursor to the filtered cathode active material and performing annealing at 400 to 1000° C. in air, wherein, in step (c), the filtered cathode active material has a moisture content of 5 to 10.5% by weight, and a recycled cathode active material prepared using the method.