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Spinel-embedded lithium-rich oxides are synthesized and their structural phases are analyzed. The type of spinel LiM0.5Mn1.5O4 (M = Ni, Co, Mn) embedded is varied by controlling the spinel composition and content. Of the various composites fabricated with different spinel phases, the LiCo0.5Mn1.5O4-embedded over-lithiated layered oxide (OLO) shows the best electrochemical performance as a cathode...
The composite material LixNi0.25Co0.10Mn0.65O(3.4+x)/2 (x=1.6, 1.4, 1.2, 1.0, 0.8) were synthesized and characterized for their structural, morphological, and performance as cathode materials in Li-ion batteries. The Rietveld refinement results indicate the presence of two phases at high lithium levels (x=1.6 and 1.4): Li2MnO3 (C2/m) and LiMO2 (MNi, Co, Mn) (R3¯m); the latter contains Ni2+ and Ni3+...
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