Jingjing Liu, Weihua Qiu, Lingyan Yu, Hailei Zhao, and Tao Li, Comparative experiment on layered Li(Ni1/3Co1/3Mn1/3)O2 as the alternative material for LiCoO2, J. Univ. Sci. Technol. Beijing, 14(2007), No. 2, pp. 173-177. https://doi.org/10.1016/S1005-8850(07)60034-6
Cite this article as:
Jingjing Liu, Weihua Qiu, Lingyan Yu, Hailei Zhao, and Tao Li, Comparative experiment on layered Li(Ni1/3Co1/3Mn1/3)O2 as the alternative material for LiCoO2, J. Univ. Sci. Technol. Beijing, 14(2007), No. 2, pp. 173-177. https://doi.org/10.1016/S1005-8850(07)60034-6
Jingjing Liu, Weihua Qiu, Lingyan Yu, Hailei Zhao, and Tao Li, Comparative experiment on layered Li(Ni1/3Co1/3Mn1/3)O2 as the alternative material for LiCoO2, J. Univ. Sci. Technol. Beijing, 14(2007), No. 2, pp. 173-177. https://doi.org/10.1016/S1005-8850(07)60034-6
Citation:
Jingjing Liu, Weihua Qiu, Lingyan Yu, Hailei Zhao, and Tao Li, Comparative experiment on layered Li(Ni1/3Co1/3Mn1/3)O2 as the alternative material for LiCoO2, J. Univ. Sci. Technol. Beijing, 14(2007), No. 2, pp. 173-177. https://doi.org/10.1016/S1005-8850(07)60034-6
The characteristics and electrochemical properties of the layered Li(Ni1/3Co1/3Mn1/3)O2 have been investigated by using the X-ray diffraction (XRD), scanning electron microscopy (SEM), and cyclic voltammograms (CV). The Li(Ni1/3Co1/3Mn1/3)O2 powders were synthesized by coprecipitation method. The as-synthesized Li(Ni1/3Co1/3Mn1/3)O2 has well-shaped crystals with a uniform particle size distribution at ~500 nm. A reversible discharge capacity of 165 mAh/g at a current of 40 mA/g between 2.7-4.35 V, with stable cycling performance has been obtained. Moreover, the discharge capacity rises up to 190 mAh/g, when the cutoff voltage increases to 4.6 V. The excellent cycling performance at a higher cutoff operating voltage (up to 4.8 V) could be attributed to the well-retention of the microstructure of synthesized Li(Ni1/3Co1/3Mn1/3)O2 powders. Comparatively, LiCoO2 suffered structure degradation at a higher cutoff voltage. However, the high rate properties of Li(Ni1/3Co1/3Mn1/3)O2 is not as good as LiCoO2, so its electrical conductivity must be improved.
The characteristics and electrochemical properties of the layered Li(Ni1/3Co1/3Mn1/3)O2 have been investigated by using the X-ray diffraction (XRD), scanning electron microscopy (SEM), and cyclic voltammograms (CV). The Li(Ni1/3Co1/3Mn1/3)O2 powders were synthesized by coprecipitation method. The as-synthesized Li(Ni1/3Co1/3Mn1/3)O2 has well-shaped crystals with a uniform particle size distribution at ~500 nm. A reversible discharge capacity of 165 mAh/g at a current of 40 mA/g between 2.7-4.35 V, with stable cycling performance has been obtained. Moreover, the discharge capacity rises up to 190 mAh/g, when the cutoff voltage increases to 4.6 V. The excellent cycling performance at a higher cutoff operating voltage (up to 4.8 V) could be attributed to the well-retention of the microstructure of synthesized Li(Ni1/3Co1/3Mn1/3)O2 powders. Comparatively, LiCoO2 suffered structure degradation at a higher cutoff voltage. However, the high rate properties of Li(Ni1/3Co1/3Mn1/3)O2 is not as good as LiCoO2, so its electrical conductivity must be improved.
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