fig2

Figure 2. Metal oxide and fluoride surface modification for lithium oxide cathode materials. (A) Schematic of the working mechanism of AZO coating layer and improved cycling stability. Reproduced from Ref.[75] with permission from Elsevier. (B) Cyclic performance enhancement of in situ ZrO2-coated NCM622 cathode and scanning electron microscopy (SEM) images after 100 cycles for NCM622 with and without the coating. Reproduced from Ref.[88] with permission from Elsevier. (C) Schematic of TiO2 coating process for