Direct Regeneration of Spent Lithium Iron Phosphate via a Low-Temperature Molten Salt Process Coupled with a Reductive Environment

A huge number of spent lithium-ion batteries (LIBs) have caused serious problems such as resource waste and environmental pollution. Lithium iron phosphate (LFP) is one of the major cathode materials in the spent LIBs. It is urgently needed to develop a safe, environmentally friendly, and cost competitive approach to regenerate the LFP cathode collected from the spent LIBs. The nitrate molten salt process has been utilized to regenerate layered...