Chemical and Physical Studies of Metal Chalcogenide Electrode Materials

摘要

This project was a collaborative effort at both developing a better understanding of the intercalation process in metal chalcogenide materials and interactive polymerization in FeOCl with particular attention paid to the influence of hte intercalation chemistry on the electronic properties of the resulting materials. A detailed mechanistic study of the 2H-TaS2/pyridine intercalation was carried out under rigorous anhydrous conditions through a thorough study of the redox chemistry which clearly identified the influence on the charge transfer process of even trace amounts of H2O. By intercatively introducing the oxidatively polymerizable pyrrole in the layered FeOCl structure the most conductive, thermally stable, intercalation form of this compound has been prepared. A computer controlled charge transport system was specifically developed for conduction studies in these materials which can cover a sample resistance range of zero (the superconductor) to 10 to the 12th ohms. Keywords: Intercalation, Pyridine, Redox chemistry, Layered compounds, Polymerizable heterocycles, Pyrrole, Automated conductivity measurements, Characterization, Chalcogens. (mjm)