Journal of Solid State Electrochemistry

, Volume 14, Issue 6, pp 919–922

Preparation and cycle performance at high temperature for Li[Ni0.5Co0.2Mn0.3]O2 coated with LiFePO4

  • S.-B. Kim
  • K. J. Lee
  • W. J. Choi
  • W.-S. Kim
  • I. C. Jang
  • H. H. Lim
  • Y. S. Lee
Original Paper

DOI: 10.1007/s10008-009-0873-7

Cite this article as:
Kim, S., Lee, K.J., Choi, W.J. et al. J Solid State Electrochem (2010) 14: 919. doi:10.1007/s10008-009-0873-7

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.

Keywords

Li[Ni0.5Co0.2Mn0.3]O2Li[Ni0.5Co0.2Mn0.3]O2 coated with LiFePO4High temperature performanceCathode materialLithium secondary battery

Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • S.-B. Kim
    • 1
  • K. J. Lee
    • 1
  • W. J. Choi
    • 1
  • W.-S. Kim
    • 1
  • I. C. Jang
    • 2
  • H. H. Lim
    • 2
  • Y. S. Lee
    • 2
  1. 1.Daejung EM Co. LTD.IncheonSouth Korea
  2. 2.Faculty of Applied Chemical EngineeringChonnam National UniversityGwang-juSouth Korea