Electrochemical properties and structures of surface-fluorinated graphite for the lithium ion secondary battery

  • Tsuyoshi Nakajima
  • , Vinay Gupta
  • , Yoshimi Ohzawa
  • , Hiroyuki Iwata
  • , Alain Tressaud
  • , Etienne Durand

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

Surface modification of graphite powder has been performed by elemental fluorine and radiofrequency (rf) plasma fluorination. Both methods give rise to an enlargement of the surface areas of graphite samples and a change of the pore volume distribution. The capacities of surface-fluorinated graphite samples are higher than those of original samples and even more than the theoretical capacity of graphite, 372 mAh g-1, without any reduction of the first colombic efficiencies. The increments of the capacities are ∼5, 10, and 15% for graphite samples with average particle diameters of 7,25 and 40 μm, respectively.

Original languageBritish English
Pages (from-to)209-214
Number of pages6
JournalJournal of Fluorine Chemistry
Volume114
Issue number2
DOIs
StatePublished - 2002

Keywords

  • Electrochemical property
  • Graphite electrode
  • Lithium ion battery
  • Surface fluorination
  • Surface modification

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