Abstract

Fluorine-graphite intercalation compound (CxF) has been synthesized from HOPG by electrochemical method using solid electrolyte PbSnF4 in a fluorine atmosphere. The compositions of the obtained CxF samples were between stage 7+4, C16.5F and stage 1, C2.4F. Fluorination was highly promoted by charging and, the fluorine content in the sample increased with increase of the charge. Two types of stage 1 bi-intecalation phases, and the in-plane superlattice with a0=2ag and b0=√3ag were observed for stage 1, C2.4F, for which the c-axis and in-plane structure models have been proposed. The calculated intensity of X-ray diffraction lines is in good agreement with observed one.

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