STUDY OF THE PREPARATION OF TERNARY FeCl_3-AlCl_3-GICs AND THE INTERCALATION REACTION PROCESS

Graphite intercalation compounds (GICs) were synthesized by mixed molt method, with graphite flake used as host and the FeCl 3 AlCl 3 used as guest. The effects of reaction temperature, the mole ratio of carbon and metallic chloride and reaction time on the stage structure of GIC, as well as the intercalation reaction process of FeCl 3 and AlCl 3 in graphite layer were studied. The results show that ternary FeCl 3 AlCl 3 GICs with different relative contents of 1stage FeCl 3 GIC and 1stage AlCl 3 GIC could be obtained through controlling the intercalation conditions. The intercalation reaction mechanism may be considered as AlCl 3 being gradually replaced by FeCl 3 through the production of intermediate FeAlCl 6. The amount replaced increased with the increasing intercalation reaction temperature, prolonged reaction time and decreasing mole ratio of carbon to metal chloride.