fig4
Figure 4. Schematic illustration of (A) regeneration of spent LiCoO2[67] and (B) spent LiCoO2 regeneration with doping[68]; (C) Decrease of Li/Fe antisite contents through HTS treatment[69]; (D) Schematic illustration of regeneration process for spent LiFePO4[70]; (E) Cycling stability of DRG and CG[71]; (F) Cycling performance of Li1.2Co0.4Nb0.4O2 before and after regeneration[72]. HTS: High-temperature shock; DRG: defect-rich regenerated graphite; CG: commercial graphite. S-LCO: R-LCO: LFP: r-LCO-MA:
