Al,B, and F doped LiNi1/3Co1/3Mn1/3O2 as cathode material of lithium-ion batteries |
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| Authors: | Shangyun Ye Yongyao Xia Pingwei Zhang Zhiyu Qiao |
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| Affiliation: | (1) Department of Physical Chemistry, University of Science and Technology, Beijing, 100083, People’s Republic of China;(2) Department of Chemistry, Fudan University, Shanghai, 200433, People’s Republic of China;(3) Gejiu Superhoo Industries Limited Corporation, Yunnan, 661000, People’s Republic of China |
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| 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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| Keywords: | Lithium-ion battery Cathode materials Doping Layered structure |
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