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Intercalation compounds of fluoroacid as precursors for the syntheses of functional materials

Research Project

Project/Area Number 11650860
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 無機工業化学
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

HAGIWARA Rika  Kyoto University, Graduate School of Energy Science, Associate Professor, エネルギー科学研究科, 助教授 (30237911)

Co-Investigator(Kenkyū-buntansha) GOTO Takuya  Kyoto University, Graduate School of Energy Science, Research Associate, エネルギー科学研究科, 助手 (60296754)
NOHIRA Toshiyuki  Kyoto University, Graduate School of Energy Science, Research Associate, エネルギー科学研究科, 助手 (00303876)
Project Period (FY) 1999 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2001: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2000: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1999: ¥2,000,000 (Direct Cost: ¥2,000,000)
KeywordsGraphite / Layered compound / Intercalation compound / fluorine / fluoride
Research Abstract

A study was made on the thermal decomposition products of fluorine-graphite intercalation compounds with a 1st stage structure. Graphite fluoride prepared by the reaction of elemental fluorine and graphite in the presence of HF contains a small amount of HF which is eliminated by the reaction with liquid ammonia or heating at 〜250 ℃. This method is applicable to the preparation of homogeneous graphite compounds as electronic materials. The insertion of HF in the graphite fluoride gallery is reversible. The interaction of the HF molecule and graphite fluoride in the gallery is strong enough to decrease the conductivity of the compound by one order of magnitude. The first stage graphite fluoride possesses a semi ionic C-F bonding to show a thermal stability up to 350 ℃. A thermal decomposition without a stage transition proceeds above this temperature to give a residual carbon. The averaged F/C ratio of the fluorocarbon gases evolved by the decomposition is 1〜3. The residual carbon possesses a low crystallinity. The crystallite size along a and c axes are 50 and 5 nm, respectively. The layer separation is also increased by 〜14 pm.

Report

(4 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (7 results)

All Other

All Publications (7 results)

  • [Publications] Yuta Sato, Rika Hagiwara, Yasuhiko Ito: "Thermal decomposition mechanism of fluorine-graphite intercalation compounds"Carbon. 39. 954-956 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Yuta Sato, Rika Hagiwara, Yasuhiko Ito: "Thermal decomposition of 1st stage fluorine-graphite intercalation compounds"Journal of Fluorine Chemistry. 110. 31-36 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Yuta Sato, Rika Hagiwara, Yaushiko Ito: "Thermal decomposition mechanism of fluorine-graphite intercalation compouds"Carbon. Vol.39. 954-956 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Yuta Sato, Rika Hagiwara, Yasuhiko Ito: "Thermal decomposition of 1st stage fluorine-graphite intercalation compounds"Journal of Fluorine Chemistry. Vol. 110. 31-36 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Yuta Sato: "Thermal decomposition mechanism of fluorine-graphite intercalation compounds"Carbon. 39. 954-956 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Yuta Sato: "Thermal decomposition of 1st stage fluorine-graphite intercalation compounds"Journal of Fluorine Chemistry. 110. 31-36 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Yuta Sato,: "Thermal decomposition mechanism of fluorine-graphite intercalation compounds"Carbon. (印刷中). (2001)

    • Related Report
      2000 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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