Bi-intercalation process of high stage metal chloride-graphite intercalation compounds

Bi-intercalation process of high stage metal chloride-graphite intercalation compounds

Stage-4 AlCl3-GIC prepared by the standard two-zone method were oxidized galvanostatically in H2SO4. The X-ray diffraction data indicate the stepwise intercalation of H2SO4 into host graphite and no formation of the GBC is observed, whereas AlCl3 is deintercalated in an early step of the reaction. I...

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Veröffentlicht in:TANSO 1990/12/10, Vol.1990(145), pp.220-227
Hauptverfasser: Shioyama, Hiroshi, Tatsumi, Kuniaki, Souma, Isao, Fujii, Rokuro
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Sprache:eng
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Electrochemical preparation
Graphite bi-intercalation compound
Metal chloride
Sulfuric acid
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container_end_page 227
container_issue 145
container_start_page 220
container_title TANSO
container_volume 1990
creator Shioyama, Hiroshi
Tatsumi, Kuniaki
Souma, Isao
Fujii, Rokuro
description Stage-4 AlCl3-GIC prepared by the standard two-zone method were oxidized galvanostatically in H2SO4. The X-ray diffraction data indicate the stepwise intercalation of H2SO4 into host graphite and no formation of the GBC is observed, whereas AlCl3 is deintercalated in an early step of the reaction. In the case of the stage-4 MoCl5-GIC, the galvanostatic oxidation caused the stepwise bi-intercalation of H2SO4 into the host GIC as well as the displacement of MoCl5 by H2SO4. Alternatively, AlCl3 vapour was allowed to react with stage-3 FeCl3-GIC. The competition between the displacement reaction of FeCl3 by AlCl3 and the stepwise bi-intercalation of AlCl3 into the stage-3 FeCl3-GIC was observed. The bi-intercalation process of such a high stage GIC is explained with a schematic chemical potential diagram, comparing the bi-intercalation into stage-2 GIC.
doi_str_mv 10.7209/tanso.1990.220
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subjects Electrochemical preparation
Graphite bi-intercalation compound
Metal chloride
Sulfuric acid
title Bi-intercalation process of high stage metal chloride-graphite intercalation compounds
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