Fig. 3: Occupation tuning strategy.
From: Tuning Li occupancy and local structures for advanced Co-free Ni-rich positive electrodes
Schematic illustration of the different structural models for HD-LNMO materials. From left to right: Li/Ni disordering, Li/Ni ordering (superlattice), Lisole at TM layers (with Mn4+ neighbors), and LiaXOb (X could be Mo/Nb/W). The gold, green, blue, and red balls indicate atoms of Li, Ni, X(Mo/Nb/W), and Mn, respectively. The double arrows represent locations where Li/Ni exchanges happen, and the single arrows refer to the Lisole at TM layers. When increasing the Li content, the evolutions in the relative content of each structural motif are indicated in the bar charts just below the corresponding models.
