Recovery and reuse of spent LiFePO4 batteries

Abstract

LiFePO4 has been widely used as cathode materials for lithium-ion battery with the development of electric vehicles and energy storage, which will cause a large quantities of spent batteries. Recycling of spent lithium-ion batteries can not only reduce impact on environment, while also bring some economic benefits. In this paper, parameters of recycling process were studied. The results showed that leaching efficiency of Iron ion was controlled by simultaneous interface chemical and surface diffusion reaction. The discharge specific capacities of resynthesized LiFePO4/C at 0.1C, 1C, 2C, 5C and 10C were 151.4, 141, 139.8, 132.4 and 115.6 mAh/g, respectively.