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

The present disclosure relates to a method of recycling a cathode active material and a recycled cathode active material prepared using the same. The method of recycling a cathode active material includes: (a) performing a first heat-treatment of a waste cathode containing a current collector and a cathode active material layer coated on the current collector in the air or under oxygen atmosphere to recover a cathode active material; (b) adding a lithium precursor to the recovered cathode active material and performing a second heat treatment in the air to recover the crystal structure of the cathode active material; (c) adding a dopant precursor to the cathode active material having the recovered crystal structure and performing doping by a third heat treatment; and (d) washing the doped cathode active material with a washing solution. The method of recycling a cathode active material provides improved capacity characteristics and lifespan characteristics and excellent crack resistance by doping a recycled cathode active material with a predetermined dopant.