High-Nickel NMA Cathode: Glycerol-Modulated Coprecipitation Preparation and an Insight into Inheritance Relationship

High-nickel LiNi1–x–yMnxAlyO2 is a preferred cathode material for next-generation cobalt-free lithium-ion batteries. However, the uneven distribution of aluminum remains a challenge due to its inability to complex with ammonia. Herein, LiNi0.9Mn0.05Al0.05O2 was successfully prepared by using glycol-modulated coprecipitation. The introduction of glycerol transformed the precursor into nanocrystals, enabling uniform Al-dispersion in the transition metal lattice. This process updates our understanding of the inheritance relationship between precursors and cathodes. The cathode prepared with glycerol was superior to that with ammonia after 100 cycles, operates at a higher voltage by ≈70 mV, and is slightly compromised in rate capability.