STRUCTURE AND ELECTROCHEMICAL PROPERTIES OF CXF AND CX(VF5)YF GRAPHITE-INTERCALATION COMPOUNDS

Fluorine-graphite intercalation compounds, C(x)F, and vanadium fluorid e-graphite intercalation compounds, Cx(VF5)yF, have been prepared and characterized by X-ray powder diffraction (Debye-Scherrer method) and FT-IR spectroscopy. The reduction of these stage 1 and stage 2 compoun ds was carried out in a solution of LiClO4 in propylene carbonate usin g the carbon paste electrode technique. It was observed that the poten tial of the reduction peak corresponding to the C(x)F samples decrease d with increasing values of x. For VF5-containing compounds, three red uction peaks were observed, related to the reactions: V(V) --> V(III), V(III) --> V(0) and F --> F-.