Influence of alkaline pre-treatment on acid dissolution of cathode material of 18650 lithium battery

Abstract Lithium battery cathodes contain lithium, cobalt, nickel, and manganese. Recycling of spent lithium batteries aims to recover these elements for re-use. Liberation cathode materials from other metals in the such as aluminium, copper, iron, is essential obtain a good leaching efficiency recovery valuable end-of-life batteries. This study investigates behaviour 18650 during H 2 SO 4 solution with without NaOH pre-treatment. Dissolution aluminium using selective method separate metal elements. The influence 2-hour pre-treatment on subsequent acid was investigated at both room temperature 80°C. extraction increased 75% higher temperature. concentration pregnant leach also increases had negligible effect manganese, copper extraction. However, cobalt significantly lower. result likely due indirect impact less hydrogen gas generated lower Al amount. lattice structure residue sample monoclinic rather than rhombohedral stronger delithiation.