Fig. 6. [Illustration of the ordered and disordered phase in layered lithium metal oxides and their structural transformation. (a) Well-ordered R3̄m structure; (b) the cation disorder or cation mixing phase with Fm3̄m structure; (c) R3̄m structure with Li vacancies in highly charged state; (d) partially cation mixed phase with TM-ions in Li slab. Li atoms yellow, transition metals red, coordinated oxygen atoms dark blue].43 (e) The relative stability between spinel and layered structure of LiyNi12xCoxMnxO2 (x = 0, 1/8, and 1/4) as a function of Li concentration.59 (f) XRD patterns of S-NCM90 and P-NCM90.71.
