Kinetics of intercalation of Br-2 or ICl into pyrolytic graphite "NIKAFILM" studied by thermoelectric properties

The kinetics of intercalation of halogen molecules Br-2 or ICl into pyrolyt ic graphite "NIKA-FILM", a commercial product of Nihon Carbon Inc., has bee n studied by the measurement of electron transport phenomena, especially th e thermoelectric properties. The data were analyzed by a two-carriers band model, and it was concluded that the change in the resistivity and Seebeck coefficient is due to the increase in the positive hole density because the intercalant halogen molecules work as accepters. From the weight increment the stage index was tentatively estimated to be four, and the deduced char ge transfer rate was 1.33x10(-4) e/molecule.