Enhancing the high-voltage electrochemical performance of the LiNi0.5Co0.2Mn0.3O2 cathode materials via hydrothermal lithiation


The chemical lithiated transition metal oxide precursor has been prepared via a hydrothermal process and successfully used for preparing the LiNi0.5Co0.2Mn0.3O2 cathode materials by the post-heat treatment. The results indicate that the lithiated transition metal oxide precursor inherits the morphology of the Ni0.5Co0.2Mn0.3(OH)2 precursor but has a typical α-NaFeO2-type (space group: R-3 m) layered structure with an imperfect crystallinity, and the Li is homogenously distributed in the particles. It is further confirmed that the obtained LiNi0.5Co0.2Mn0.3O2 cathode material has a suppressed cation mixing resulting in an excellent electrochemical performance. It delivers the high initial capacity of 187.3 mAhg−1 at 1 C over the high cutoff voltage range of 3.0–4.6 V and the excellent capacity retention of 81.90% after 100 cycles as well as the rate capability of 152.3 mAhg−1 at 8 C, which are attributed to the low polarization, fast Li+ diffusion and small charge–discharge resistance of the as-prepared material upon cycling.

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The authors are very grateful for the financial support from the Government of Guangxi Zhuang Autonomous Region (Glorious Laurel Scholar Program No. 2011A025).

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Correspondence to Yunjiao Li.

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Chen, Y., Li, P., Li, Y. et al. Enhancing the high-voltage electrochemical performance of the LiNi0.5Co0.2Mn0.3O2 cathode materials via hydrothermal lithiation. J Mater Sci 53, 2115–2126 (2018). https://doi.org/10.1007/s10853-017-1645-x

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  • Cathode Material
  • Excellent Electrochemical Performance
  • Lithiated Transition Metal
  • Post-heat Treatment
  • Hydrothermal Process