The Evaluation of the Recovery of Cobalt in the Lithium-ion Batteries

Zhe WANG

Environment and Chemical Engineering, Hechi University, Hechi, CHINA

Abstract: In this work , the removal of cobalt has been precipitation separation in the form of cobalt oxalate by acid-soluble alkali leaching method. At first, the aluminum was selective removal by 5% sodium hydroxide, and then with the mixed solution of H2SO4 and H2O2 to achieved the precipitation of cobalt oxalate. The results of this study can be considered in making decision which conditions of achieved precipitation of cobalt can be efficiently applied in a real manufactory and recover valuable metals from waste lithium-ion batteries. The leaching rate of cobalt were evaluated by ultraviolet spectrophotometry.

Keywords: Waste Lithium-ion Battery; Recovery of Cobalt; CoC2O4; LiCoO2