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Fluorination of Graphite Oxide and Application to Lithium Battery

Research Project

Project/Area Number 01550600
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 無機工業化学
Research InstitutionKyoto University

Principal Investigator

NAKAJIMA Tsuyoshi  Kyoto University Faculty of Engineering Associate Professor, 工学部, 助教授 (50026233)

Project Period (FY) 1989 – 1990
Project Status Completed (Fiscal Year 1990)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1990: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1989: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsGraphite Oxide / Lithium Battery / Intercalation / Fluorination
Research Abstract

Graphite oxide has been synthesized by Hummers, Staudenmeier and Brodie methods and fluorinated by fluorine gas and mixtures of VF_5+F_2 and SbF_5+F_2 at temperatures between 20 ^゚C and 200^゚C. Optimum fluorination temperature increased from 50^゚C to 100^゚C for graphite oxide prepared by Hummers, Staudenmeier and Brodie methods in that order. Perfect fluorination was difficult, but X-ray diffraction showed that the repeat distance along c-axis of fluorinated graphite oxide was 8.5-9 A, almost the same as that of stage 2 type graphite fluoride (c_2F)_n. At the same time the lattice parameter along a-axis increased from 2.48 A to 2.50 A consistent with that for (C_2F)_n. IR spectrum indicated a strong absorption at 1200 cm corresponding to C-F bonding. These data coincide with the stage 2 type structure model of graphite oxide.
The cathodic behavior of fluorinated graphite oxide has been investigated in propylene carbonate-1 M LiCLO_4 solution with Li negative electrode. With increasing crystallinity of graphite oxide, the capacities and flatness of the discharge potentials of fluorinated graphite oxide were impro ved.
Comparison of the structures of ionic intercalation compounds of transition metal fluorides and oxide fluorides with that of graphite oxide suggested that the covalency of C-O bond in graphite oxide is not as high as that of graphite fluoride.

Report

(3 results)
  • 1990 Annual Research Report   Final Research Report Summary
  • 1989 Annual Research Report
  • Research Products

    (19 results)

All Other

All Publications (19 results)

  • [Publications] T.NaKajima: "Fluorination and Structucture of graphite oxide" Carbon.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T.Nakajima: "Preparation and characterization of tungsten oxide fluoride and tungsten fluorideーgraphite intercalation Compounds" Synthetic Metals. 34. 103-108 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T.Nakajima: "Synthesis,structure and electrical conductivity of Vanadium oxide fluorideーgraphite intercalation compounds" Eur.J.Solid State Inorg.Chem.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T.Nakajima: "Structural factors on stability of fluoride or fluorineーgraphite intercalation Compounds" Synthetic Metals. 34. 237-242 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 中島 剛: "黒鉛層間化合物(第5章)" リアライズ社, 356 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T.Nakajima: "Graphite fluorides and carbonーfluorine Compounds" CRC Press Inc., 173 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T. Nakajima: ""Fluorination and Structure of Graphiteoxide"" Carbon.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T. Nakajima: ""Preparation and Characterization of Tungsten Oxide Fluoride and Tungsten Fluoride-Graphite Intercalation Compounds"" Synthetic Metals. 34(1-3). 103-108 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T. Nakajima: ""Synthesis, Structure and Electrical Conductivity of Vanadium Oxide Fluoride-Graphite Intercalation Compound"" Eur. J. Solid State Inorg. Chem.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T. Nakajima: ""Structural Factors on Stability of Fluoride- or Fluorine-Graphite Intercalation Compounds"" Synthetic Metals. 34(1-3). 237-242 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T. Nakajima: ""Graphite Intercalation Compounds" chapter 5, Realize Co. Ltd., 1990, 356 pages"

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T. Nakajima: ""Graphite Fluorides and Carbon-Fluorine Compounds", CRC Press, Inc., 1990, 173 pages"

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T.Nakajima: "Fluorination and structure of gnaphite oxide" Carbon.

    • Related Report
      1990 Annual Research Report
  • [Publications] T.Nakajima: "Synthesis,structure and electrical conductivity of vanadium oxide fluorideーgraphite intercalation Compound" Eur.J.Solid State Inorg.Chem.

    • Related Report
      1990 Annual Research Report
  • [Publications] 中島 剛: "黒鉛層間化合物(第5章)" リアライズ社, 356 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] T.Nakajima: "Graphite fluorides and carbonーfluorine compounds" CRC Press Inc., 173 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] T.Nakajima: "Fluorination of Graphite Oxide and the New Structure Model of Graphite Oxide" Carbon.

    • Related Report
      1989 Annual Research Report
  • [Publications] 中島剛(分担執筆): "炭素応用技術の新展開" シ-エムシ-, 339 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 中島剛(文体執筆): "ぬれの基礎と応用" リアライズ社, 574 (1989)

    • Related Report
      1989 Annual Research Report

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Published: 1989-04-01   Modified: 2016-04-21  

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