Sodium sulfite roasting for preferential lithium extraction from cathode material of spent lithium-ion batteries

A systematic review of efficient recycling for the cathode materials of spent lithium-ion batteries: process intensification technologies beyond traditional methods

“…According to the report by Bahgat et al , 47 under conditions of ≥1000 °C and ≥4 hours, spent LIB cathode powder could be used to synthesize microcrystalline Li/Co ferrite composites. Yang et al 48 roasted Na 2 SO 3 with the cathode material (S-NCM622) of ternary LIBs at a high temperature of 750 °C. They successfully transformed the spent LiNi 0.6 Co 0.2 Mn 0.2 O 2 materials into new materials (LiNa(SO 4 ), LiMnO 2 , NiO, LiMn 2 O 4 , Co 9 S 8 , Ni, Co, and Mn).…”