Abstract
LiNi1/3Co1/3Mn1/3O2 cathode material was surface-treated to improve its electrochemical performance. Al2O3 nanoparticles were coated onto the surface of LiNi1/3Co1/3Mn1/3O2 powder using a sol-gel method. The as-prepared Al2O3 nano-particle was identified as the cubic structure of Al2O3. XRD showed that the LiNi1/3Co1/3Mn1/3O2 structure was not affected by the Al2O3 coating. With a coating of 3 wt.% Al2O3 on LiNi1/3Co1/3Mn1/3O2, the cyclic-life performance and rate capability were improved. However, heavier coatings (5 wt.%) on LiNi1/3Co1/3Mn1/3O2 resulted in a considerable decrease of the discharge capacity and rate capability. The thermal stability of LiNi1/3Co1/3Mn1/3O2 materials was greatly improved by the 3 wt.% Al2O3 coating.
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Kim, HS., Kim, KT., Kim, YS. et al. Effect of a surface treatment for LiNi1/3Co1/3Mn1/3O2 cathode material in lithium secondary batteries. Met. Mater. Int. 14, 105–109 (2008). https://doi.org/10.3365/met.mat.2008.02.105
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DOI: https://doi.org/10.3365/met.mat.2008.02.105