Synthesis and characterization of Y2Ru2O7 and Y2-xPrxRu2O7 for cathode application in intermediate temperature solid oxide fuel cells

Chiara Abate, Keith Duncan, Vincenzo Esposito, Enrico Traversa, Eric D. Wachsman

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

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.
Original languageEnglish
JournalE C S Transactions
Volume1
Issue number7
Pages (from-to)255-261
ISSN1938-5862
DOIs
Publication statusPublished - 2006
Externally publishedYes
Event208th ECS Meeting - Los Angeles, California, United States
Duration: 16 Oct 200521 Oct 2005

Conference

Conference208th ECS Meeting
CountryUnited States
CityLos Angeles, California
Period16/10/200521/10/2005

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