Electrical properties of crystal compounds of graphite, I. Conductance of graphite/bromine

Measurements are reported of the electrical resistance of graphite/bromine of various compositions. Some of the experiments refer to natural graphite, but the majority deal with specimens of pyrolytic graphite which show good orientation with respect to both a- and c-axes. Changes of resistance in these two directions have been measured as a function of bromine up take to limiting concentrations; cyclic sorption— desorption studies have been included where appropriate. Results are discussed in the light of current theories about the electron band structure in graphite and in relation to the nature of the bonding between bromine and graphite.