STUDY OF FECL3 AND COCL2 GRAPHITE-INTERCALATION COMPOUNDS REDUCED BY HEAVY ALKALI-METAL VAPOR

We present here direct imaging, microdiffraction and microanalysis results on FeCl3 and CoCl2 G.I.C. prepared using single crystals of graphite and further reduced at relatively low temperature by potassium, rubidium or cesium vapour. These products contain several phases: transition metal and alkali metal halide inclusions (size 5 to 50 nm), and also two dimensional, intercalated transition metal. An initial study of the thermal stability of these phases was made.