ZrO2 coating of LiNi1/3Co1/3Mn1/3O2 cathode materials for Li-ion batteries |
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| Authors: | Jiangang Li Qian Zhang Chao Liu Xiangming He |
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| Institution: | (1) Beijing Institute of Petrochemical Technology, Beijing, 102617, People’s Republic of China;(2) Institute of Nuclear & New Energy Technology, Tsinghua University, Beijing, 100084, People’s Republic of China |
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| Abstract: | ZrO2-coated LiNi1/3Co1/3Mn1/3O2 materials were prepared by hydroxide precipitation. The structure and electrochemical properties of the ZrO2-coated LiNi1/3Co1/3Mn1/3O2 were investigated using X-ray diffraction, scanning electron microscope, and charge–discharge tests, indicating that the
lattice structure of LiNi1/3Co1/3Mn1/3O2 were unchanged after the coating but the cycling stability was improved. As the coating amount increased from 0.0 to 0.5 mol.%,
the initial capacity of the coated LiNi1/3Co1/3Mn1/3O2 decreased slightly; however, the cycling stability increased remarkably over the cut-off voltages of 2.5~4.3 V and the capacity
retention reached 99.5% after 30 cycles at the coating amount of 0.5 mol.%. ZrO2 coating also improved the cycling stability of LiNi1/3Co1/3Mn1/3O2 over wider cut-off voltage of 2.5~4.6 V. |
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| Keywords: | Li-ion batteries Cathode materials LiNi1/3Co1/3Mn1/3O2 ZrO2 coating Cathodes Materials preparations Zirconia |
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