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- Title
Preparation and cycle performance at high temperature for Li[Ni<sub>0.5</sub>Co<sub>0.2</sub>Mn<sub>0.3</sub>]O<sub>2</sub> coated with LiFePO<sub>4</sub>.
- Authors
Kim, S.-B.; Lee, K. J.; Choi, W. J.; Kim, W.-S.; Jang, I. C.; Lim, H. H.; Lee, Y. S.
- Abstract
Li[Ni0.5Co0.2Mn0.3]O2 coated with LiFePO4 was synthesized by a co-precipitation method. It consisted of the parent Li[Ni0.5Co0.2Mn0.3]O2 as the core and the LiFePO4 as the coating material, with an average particle diameter of 500 nm. The LiFePO4-coated Li[Ni0.5Co0.2Mn0.3]O2 showed no large initial capacity drop in the first cycle, which generally occurred with cathode materials bearing inactive coating layers such as Al2O3, ZnO, and MgO. Furthermore, it presented a remarkably improved cycle retention rate of over 89% until 400 cycles at 50 °C. We suggest that the LiFePO4 coating technique is a very effective tool to improve the cycle performance of Li[Ni0.5Co0.2Mn0.3]O2 at high temperatures.
- Subjects
ORGANIC synthesis; HIGH temperatures; LITHIUM-ion batteries; CATHODES; ELECTRODES
- Publication
Journal of Solid State Electrochemistry, 2010, Vol 14, Issue 6, p919
- ISSN
1432-8488
- Publication type
Article
- DOI
10.1007/s10008-009-0873-7