Based on first-principles calculations, structure optimization of Pd intercalated graphite is performed and the equilibrium values for lattice constants are obtained, in agreement with experimental values. In graphite the carbon atoms within the basal plane are bound together by strong covalent σ-bonds, while atoms in adjacent layers are weakly bound by Van der Waal bonds, results in semimetal. Being intercalated with Pd, due to Pd-4d and C-2p hybridizations, partial charge transfers occur from Pd to C, which increase the density of states at Fermi level and make the compound metallic-like; the heat of formation is found to be 2.45eV for per Pd atom intercalation.
|Number of pages
|Molecular Crystals and Liquid Crystals
|Published - 2000
|ISIC 10 - 10th International Symposium on Intercalation Compounds - Okazaki, Jpn
Duration: 1999 May 30 → 1999 Jun 3