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The regenerated LiNi0.6Co0.1Mn0.3O2 (NCM613) cathode material was synthesized from electrode scraps through separation, impurity removal, and relithiation. ICP, XRD, SEM, and electrochemical performance were used to study the composition, crystal phase structure, and surface morphology of commercial, cycled, and regenerated NCM613. After separation and impurity removal, the regenerated NCM613 was obtained by using lithium supplement and calcined at 950 °C for 11 h. At 0.1 C, the discharge capacity reaches 201.7mAh/g. After 200 cycles, the capacity is still maintained 175.6mAh/g at 1C, capacity retention is 95.1%. The results show that the regenerated NCM613 has high capacity and excellent cycle stability. This method provides a method for the recovery of spent lithium ion batteries. [ABSTRACT FROM AUTHOR]