抄録
Effects of CuCl2 or FeCl3 intercalation on resistivity were studied using three kinds of carbon fibers (Vapor-grown, PAN, and Pitch) as well as HOPG (Highly Oriented Pyrolytic Graphite) and exfoliated graphite sheet (Grafoil). The stage-1 Graphite Intercalation Compounds (GIC) was formed by intercalation of CuCl2 and FeCl3 into VGCF as well as into HOPG and Grafoil. Stage-3 GIC was only formed by CuCl2 intercalation into PANCF and PitchCF, but not by FeCl3 intercalation. It was found that CuCl2 is an easier intercalated, compared with FeCl3. The temperature dependence of resistivity after intercalation was changed from semiconducting to metallic for VGCF as well as for HOPG-c and Grafoil.
