▎ 摘　　要

NOVELTY - Regenerating complex anode material from a decommissioned lithium battery comprises (i) disassemble the waste lithium battery, removing the plastic casing, soaking the electrode material in the solution and ultrasonically treat it, obtaining anode active material as lithium-containing powder, and cathode active material as graphite powder, (ii) mixing lithium-containing powder of anode active material and complex salt evenly, placing it in muffle furnace for calcination, (iii) adding deionized water to the calcined product, stirring on magnetic stirrer for 5-20 minutes, stirring until solution is clear, and performing suction filtration on solution to obtain filtrate, (iv) adding precipitation complexing agent to filtrate, stirring evenly, adding graphene, dispersing uniformly by ultrasound, and transferring in PTFE-lined stainless steel autoclave, reacting and(v) cooling to room temperature, washing and filtering obtained precipitate, and drying for 6-12 hours. USE - The method is useful for regenerating complex anode material from decommissioned lithium battery. ADVANTAGE - The method avoids introduction of chemical reagents including acid and alkali, the operation is simple, economical and environmentally friendly, the overall process flow is shortened, and the electrochemical performance of the cathode material of the regenerative lithium ion battery is improved with reasonable energy intensity, and has great industrial application prospects.