The pursuit of mitigating capacity loss in Ni-rich oxide cathodes has been a focal point of research, targeting challenges including oxygen loss, structural degradation, and mechanical failure within composite electrodes . The transition from a layered to rock-salt phase in NMC cathodes is an inevitable result of cationic mixing and oxygen loss . Among Ni, Co, and Mn ions, Ni ions have the strongest tendency to mix with Li ions, primarily due to the similarity in ionic radius between Ni and Li ions . The onset potential of oxygen loss decreases with increasing Ni content, for example, at around 4.6 V for NMC111 and at 4.2 V for NMC811 .