| abstract |
The invention discloses a regeneration method for accurately regulating target elements to repair the positive electrode waste of waste and used lithium ion batteries. The additive is placed in an aqueous solution, and after ultrasonic mixing, a high-temperature solid-phase synthesis treatment is performed, and repair and regeneration are realized after the treatment is completed. The positive electrode material of the lithium ion battery obtained by the repairing and regenerating method of the invention has accurate element ratio and good structural stability, and the repairing method is simple and environmentally friendly. The repaired and regenerated material is used as the positive electrode material of the lithium ion battery, and the lithium ion battery is assembled, showing good cycle stability and high battery capacity retention rate; the method of the invention has short process flow, saves recovery cost, and is easy to realize industrial application. |