Abstract
LiNi0.8Co0.15Al0.05O2 (NCA) is the most popular cathode material used for lithium-ion batteries. NCA batteries have some features of high capacity and high density but have a certain life-cycle so in the end, it becomes spent NCA batteries. Spent NCA batteries contain dangerous heavy metals for the environment, but it also valuable. In this study, valuable metals from spent NCA battery that is nickel and cobalt were recovered using mixed phosphoric acid and citric acid as a leaching agent and also as a reductant agent. The effects of various temperatures and concentrations of mixed acid were investigated to reach the optimum condition on the process of leaching nickel and cobalt. Spent NCA cathode was being dissolved by aqua-regia to determine the content of metals that could be leached. In the leaching process, the metals were leached in acid solution, and the concentration of metals ion in leachate was determined by Atomic Absorption Spectrophotometry (AAS). The leaching efficiencies of both nickel and cobalt reached about 99.6% of nickel and 93.4% of cobalt at the optimum leaching condition of 0.5 M phosphoric acid and 1.5 M citric acid with ratio solid to liquid (S/L) 30 g/L at 90°C for 60 minutes.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
