Nanocrystalline powders of Y2Ru2O7 and Y2-xPrxRu2O7 were prepared by a co-precipitation method. Pr was chosen as the Asite dopant in order to increase the electrical conductivity of Y2Ru2O7. Phase and morphology were studied by XRD and FE-SEM, which showed both systems exhibit a particle size of about 100 nm, and the doped powders were single pyrochlore phase. The electrical conductivity of a dense bar of Y2- xPrxRu2O7 was measured at several temperatures by d.c. 4- probe method, while the electrochemical properties of Y2- xPrxRu2O7 pyrochlores were tested in contact to ESB electrolytes, using Electrochemical Impedance Spectroscopy (EIS) in air. The Y2-xPrxRu2O7 on ESB electrolyte solid-state cells presents a significant decrease of electrodes impedance.
|E C S Transactions
|Published - 2006
|208th ECS Meeting - Los Angeles, California, United States
Duration: 16 Oct 2005 → 21 Oct 2005
|208th ECS Meeting
|Los Angeles, California
|16/10/2005 → 21/10/2005