Articles
  • Fullerene coated silicon electrodes prepared by a plasma-assisted evaporation technique for the anodes of lithium secondary batteries
  • Arenst Andreas Arie and Joong Kee Lee*
  • Advanced Energy Materials Processing Laboratory, Battery Research Center, Korea Institute of Science and Technology, P.O.BOX 131, Cheongryang, Seoul 130-650, Korea
Abstract
With the aim of enhancing the silicon anode performance in lithium secondary batteries, we have studied the effect of a fullerene thin film as a coating material. The fullerene films were prepared by a plasma assisted evaporation technique from fullerene powder on a Cu foil. As a result, excellent electrochemical performance of fullerene-coated silicon electrodes in terms of stable cycle performance and high specific capacity were observed. The enhanced performances are attributed to the formation of a polymeric phase of the fullerene film as confirmed by Raman spectroscopy, FTIR spectroscopy and XPS analysis. The polymeric layer could act as passive layer to provide mechanical stability against the volume expansion during prolonged cycling tests.

Keywords: Thin film, Coating, Lithium battery, Polymeric phase

This Article

  • 2009; 10(5): 614-617

    Published on Oct 31, 2009