THE RECYCLING OF GRAPHITE FROM SPENT LITHIUMION BATTERIES AS NEW LITHIUMION BATTERIES ANODE MATERIALS

Spent lithium-ion batteries (LIBs) anode material has been successfully reused as a new LIBs anode material by mechanical separation, chemical purification, and calcination. The materials obtained were characterized using XRD and FTIR. LIBs anode slurry was made with a composition of active material: binder: additive = 85: 10: 5 that was mixed in N-methyl-2-pyrrolidone (NMP) solvents. Graphite of 5% was added to the anode active material to increase the graphite content in the anode materials. The battery performance was determined using cyclic voltammetry and the charge-discharge test. The charge-discharge test shows that the spent LIBs anode treated without the addition of graphite has the highest efficiency (98%) and capacity (charge 148.374 mAh/g and discharge 151.489 mAh/g). The capacity values were higher than the anode materials without treatment.