New Materials for Electrochemical Cells

摘要

The research had two main aims: (i) determination of the thermochemical, structural and electrochemical properties of insertion compounds and materials showing mixed electronic/ionic conduction, and (ii) the design, preparation and characterization of new materials for use as electrolytes or cathode materials in solid state cells. The progress of this research has been described in the series of scientific reports and renewal proposals submitted during the research period and discussed in detail through the scientific publications listed above. New ambient-temperature lithium and hydrogen insertion compounds have been prepared from the uranium oxides U3O8, alpha, gamma and delta UO3. Electrochemical and thermochemical parameters have been determined for these phases and also for the hydrogen insertion compounds of vanadium oxide mixed molybdenumtungsten trioxides and new structural modifications tungsten oxide and molybdenum oxide; the phase previously known as hexagonal MoO3 has been shown to be a partially deammoniated and dehydrated ammonium decamolybdate.