INVESTIGATION ON RECOVERY OF VALUABLE METALS IN LITHIUM-ION BATTERIES

Abstract

In this study, a mixture of trioctylmethyl ammonium oleate and tridecylmethyl ammonium oleate ionic
liquids was synthesized and structurally characterized by FT-IR, and MNR spectroscopy. The synthesized
ionic liquidr were used as a solvent for the extraction process to recover precious metal ions (Mn2+, Co2+
,
Ni2+, Li+
) in spent batteries. The principle of the process is based on the ionic liquid's ability to adsorb metal
ions changes according to environmental conditions. Research results show that the yiled of metal ions
Mn2+, Co2+, Ni2+, Li+
recovery rearched 97.05%, 96.12%, 99.43%, 98.04%, respectively. Spents ionic liquid
can be recovered up to 80%, metal ions recovery efficiency of reused ionic liquid reaches >95% compared
to the first time.