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The graphite encapsulatedα-Fe particles were prepared by reduction of stage-2 and stage-3 FeCl 3 graphite intercalation compounds(GICs)with metallic potassium.X-ray diffraction analysis(XRD),energy dispersive X-ray spectroscopy(EDS)investigation and transmission electron microscopy(TEM) observation show that the reduction products of stage-2 FeCl 3 -GICs contains more abundantα-Fe nanoparticles than those of stage-3.High-resolution TEM(HRTEM)observation reveals that the nanoparticle ofα-Fe was polycrystals or twins,which was real or quasi two-dimension in shape,and whose space orientation was strictly controlled by the graphene.Based on the experiment results,a possible growth model of the graphite encapsulatedα-Fe was proposed.
The graphite encapsulated α-Fe particles were prepared by reduction of stage-2 and stage-3 FeCl 3 graphite intercalation compounds (GICs) with metallic potassium.X-ray diffraction analysis (XRD), energy dispersive X-ray spectroscopy Transmission electron microscopy (TEM) observation show that the reduction products of stage-2 FeCl 3 -GICs contains more abundant α-Fe nanoparticles than those of stage-3.High-resolution TEM (HRTEM) observations reveals that the nanoparticle of α- Fe was polycrystals or twins, which was real or quasi two-dimension in shape, and where space orientation was strictly controlled by the graphene. Based on the experiment results, a possible growth model of the graphite encapsulated α-Fe was proposed.