Graphite-bromine system

The graphite-bromine-iron system has also been studied. No stoi-... 

In the case of the on graphite, polarized EXAFS was used to determine molecular orientation (26,27). The system consisted of a stack of parallel graphite sheets in which the EXAFS could be measured parallel or perpendicular to the plane of the sheets. The authors were able to show that the bromine was bound as Br and to determine the orientation of the Br molecules with respect to the plane of the graphite sheets. Polarized EXAFS proved to be a useful complement to LEED, which had been used to probe the long-range order in this system. 

An additional advantage of the proposed solar energy devices would be that they could be built of cheap materials. They could, for example, be made of carbon, a graphite layer anode and a sheet of amorphous carbon as a cathode separated by a thin electrolyte layer with bromide/bromine as a carrier system. 

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