Abstract:In recent years, the new energy vehicles and energy storage fields develop rapidly in China. The usage of lithium iron phosphate battery rises sharply. In the future, a large number of retired lithium iron phosphate batteries will be generated, the recycling of which will not only alleviate the problem of lithium resource shortage in China but also reduce the environmental pollution caused by fluorinated electrolyte. The research on recycling of retired lithium iron phosphate batteries in recent years was reviewed, including lithium battery pretreatment, repair technologies for spent lithium iron phosphate cathode material, hydrometallurgical recovery, selective lithium extraction method, and recovery of lithium extraction tailing, etc. The latest research results of each technology were summarized. The advantages and disadvantages of each process were analyzed from the aspects of economics of the process, recovery rate and environmental impact and other aspects. The future development direction of recycling technology of retired lithium iron phosphate batteries was prospected.