Abstract
The paper deals with the synthesis and structure of FeCl3-CrO3-graphite bi-intercalation compound (FeCl3-CrO3-GBC) prepared during the subsequent intercalation of chromium trioxide into stage-2 FeCl3-GIC/graphite system. From the results of the X-ray diffraction measurements and the scanning electron microscopy coupled with energy dispersive X-ray analysis it was concluded that the product consists of a mixture of saturated FeCl3-CrO3-GBC and stage-2 FeCl3-GIC. Based on the model of the transformation from stage-2 FeCl3-GIC/graphite system to FeCl3-CrO3-GBC, it can be understood that upon the subsequent intercalation process CrO3 is intercalated in the interlayer spacings of graphite both free and occupied by FeCl3. Due to the latter invasion the double-layer co-intercalation domain is formed whereas a part of FeCl3 is displaced to the zone of the pristine graphite present in the host FeCl3-GIC.
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