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- Kim, Youngsik
- YK Research
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Effect of a surface treatment for LiNi1/3Co1/3Mn1/3O2 cathode material in lithium secondary batteries
- Author(s)
- Kim, Hyun-Soo, Kim, Ke-Tack, Kim, Youngsik, Martin, Steve W.
- Issued Date
- 2008-02
- Citation
- METALS AND MATERIALS INTERNATIONAL, v.14, no.1, pp.105 - 109
- Abstract
- LiNi1/3Co1/3Mn1/3O2 cathode material was surface-treated to improve its electrochemical performance. A1 2O3 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 A12O3. XRD showed that the LiNi1/3Co1/3Mn1/3O2 structure was not affected by the A12O3 coating. With a coating of 3 wt.% A12O3 on LiNi1/3Co 1/3Mn1/3O2, the cyclic-life performance and rate capability were improved. However, heavier coatings (5 wt%) on LiNi 1/3Co1/3Mn1/3O2 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.
- Publisher
- KOREAN INST METALS MATERIALS
- ISSN
- 1598-9623
- Keyword (Author)
- LiNi1/3Co1/3Mn1/3O2, Al2O3 nano-particles, sol-gel method, electrochemical property, rate capability, cyclic life
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