Use of electrochemical cathode-reduction method for leaching of cobalt from spent lithium-ion batteries

The present work is focused on the use of electrochemical cathode-reduction method for leaching LiCoO2 produced by spent lithium-ion batteries. The thermodynamics, kinetics, and electrochemical impedance spectroscopy analyses are used to determine the probable control mechanism involved in the leaching of cobalt from spent LiCoO2. The leaching efficiencies reached about 90% for cobalt and nearly 94% for lithium using 1.25 mol/L of malic acid and...