Direct Cathode Regeneration Method for Lithium-ion Battery Recycling

A method for direct cathode regeneration from spent lithium-ion batteries. The method includes treating black mass with organic acids to leach the valuable metal elements, and the residual impurities removal by filtration and further treatment of the material with different leaching solutions to achieve the desired ratio of components which are subsequently precipitated as the hydroxide intermediate, followed by a two-step annealing process to obtain a regenerated cathode material.