Abstract
A series of the mixed transition metal compounds, Li[(Ni1/3Co1/3Mn1/3)1–x-y Al x B y ]O2-z F z (x = 0, 0.02, y = 0, 0.02, z = 0, 0.02), were synthesized via coprecipitation followed by a high-temperature heat-treatment. XRD patterns revealed that this material has a typical α-NaFeO2 type layered structure with R3- m space group. Rietveld refinement explained that cation mixing within the Li(Ni1/3Co1/3Mn1/3)O2 could be absolutely diminished by Al-doping. Al, B and F doped compounds showed both improved physical and electrochemical properties, high tap-density, and delivered a reversible capacity of 190 mAh/g with excellent capacity retention even when the electrodes were cycled between 3.0 and 4.7 V.
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Ye, S., Xia, Y., Zhang, P. et al. Al, B, and F doped LiNi1/3Co1/3Mn1/3O2 as cathode material of lithium-ion batteries. J Solid State Electrochem 11, 805–810 (2007). https://doi.org/10.1007/s10008-006-0226-8
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DOI: https://doi.org/10.1007/s10008-006-0226-8