Characterization of Li1+yNixCo1−2xMnxO2 positive active materials for lithium ion batteries

Enthalpies of formation of layered LiNixMnxCo1–2xO2 (0 ≤ x ≤ 0.5) compounds as lithium ion battery cathode materials

“…The trend of the change in the lattice parameters with x is almost linear, which is usual for a substitution mechanism which is not accompanied by significant attractive or repulsive electronic effects. The linear trend is also observed by Shizuka et al for 0.3 £ x £ 0.5 [42].…”

Effect of CO2 on Layered Li1+zNi1-x-yCoxMyO2 (M=Al,Mn) Cathode Materials

“…, 11 (29) 7-13 (2008 It has been previously suggested the oxidation states of Ni, Co and Mn are +2, +3 and +4, respectively, in the NCM (Ni/Mn molar ratio = 1) series (4)(5)(6)(7)(8). In our previous work, in order to obtain information for the oxidation states of transition metal in NCM (Ni/Mn molar ratio = 1), Ni, Mn and Co K-edge XANES spectra were measured (10,11). These results could be interpreted as partial oxidation of Ni from 2+ to 3+ on doping of lithium ion because only Ni K-edge XANES shifted to higher energy due to the oxidation of Ni as excess lithium content increased.…”

Interfacial Reactions of Intercalation Electrodes in Lithium Ion Batteries

“…[40][41][42][43][44][45] However, their poor rate capability makes it difficult to consider lithium-rich layered rocksalts as viable candidates for the replacement of conventional layered rock salt cathodes (Li(Co,Ni,Mn)O 2 ). Figure 6 summarizes electrochemical properties and interfacial structures of a lithium-rich layered rocksalt Li 2 RuO 3 .…”