fig4

Figure 4. High-voltage issues for Ni-based materials. (A) Schematic diagram of electrochemical potential window of LIBs at open circuit voltage, showing stability limits of the electrolyte and electrode. Reproduced with permission^[55]. Copyright 2022, Wiley-VCH. (B) Schematic illustration of the high-voltage induced oxidative decomposition mechanism of electrolyte on Ni-based materials. Reproduced with permission^[56]. Copyright 2020, Royal Society of Chemistry. (C) Schematic representation of simultaneous degradation of cathode and electrolyte self-reinforced mechanism. Reproduced with permission^[59]. Copyright 2021, Elsevier.