Sustainable Mining and Metallurgy

Considering the energy crisis, environmental problems and the constraints of lithium resources on the development of lithium battery industry, the recycling of waste lithium batteries is a very necessary and meaningful work. In this paper, the recycling methods of waste lithium iron phosphate battery cathode materials were reviewed, including chemical precipitation method, selective leaching method, mechanochemical method, electrochemical lithium extraction method and other valuable element extraction technologies, as well as solid phase repair regeneration, hydrothermal repair regeneration, electrochemical repair regeneration and other repair regeneration technologies, and the advantages and disadvantages of different recycling methods were pointed out. In view of the problems existing in the recycling of spent lithium iron phosphate battery cathode materials at the present stage, the prospect was put forward, which provide a reference for the subsequent research and industrial application of spent lithium iron phosphate battery recycling.