Abstract
Graphite was oxidized electrochemically in an aqueous solution of 2.5 moles of FeCl 3, 1.75 moles of HCl and 6 moles of H 2O, which leads to the formation of stage n iron chloride-graphite intercalation compounds (GICs) (where n ≧ 2). The interplanar distance d i of the GIC is ~9.4 Å; this value is similar to that of the FeCl 3-GIC obtained by the vapour phase method. Mössbauer spectroscopy shows that the FeCl 4 − ion exists in the interlayer spacing of graphite. The existence of co-intercalated species is suggested by the results of elemental analysis, thermogravimetry and so on.
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