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

doi:10.1149/1.2215560

Synthesis and characterization of Y₂Ru₂O₇ and Y_2-xPr_xRu₂O₇ for cathode application in intermediate temperature solid oxide fuel cells

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

University of Rome Tor Vergata
Università degli Studi di Roma Tor Vergata
University of Florida

Research output: Contribution to journal › Conference article › Research › peer-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 language	English
Journal	E C S Transactions
Volume	1
Issue number	7
Pages (from-to)	255-261
ISSN	1938-5862
DOIs	https://doi.org/10.1149/1.2215560
Publication status	Published - 2006
Externally published	Yes
Event	208th ECS Meeting - Los Angeles, California, United States Duration: 16 Oct 2005 → 21 Oct 2005

Conference

Conference	208th ECS Meeting
Country/Territory	United States
City	Los Angeles, California
Period	16/10/2005 → 21/10/2005

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Cite this

@inproceedings{078be714212a416ab17bb669f1c92d30,

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

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.",

author = "Chiara Abate and Keith Duncan and Vincenzo Esposito and Enrico Traversa and Wachsman, \{Eric D.\}",

year = "2006",

doi = "10.1149/1.2215560",

language = "English",

volume = "1",

pages = "255--261",

journal = "E C S Transactions",

issn = "1938-5862",

publisher = "The Electrochemical Society",

number = "7",

note = "208th ECS Meeting ; Conference date: 16-10-2005 Through 21-10-2005",

}

TY - GEN

T1 - Synthesis and characterization of Y2Ru2O7 and Y2-xPrxRu2O7 for cathode application in intermediate temperature solid oxide fuel cells

AU - Abate, Chiara

AU - Duncan, Keith

AU - Esposito, Vincenzo

AU - Traversa, Enrico

AU - Wachsman, Eric D.

PY - 2006

Y1 - 2006

N2 - 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.

AB - 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.

U2 - 10.1149/1.2215560

DO - 10.1149/1.2215560

M3 - Conference article

SN - 1938-5862

VL - 1

SP - 255

EP - 261

JO - E C S Transactions

JF - E C S Transactions

IS - 7

T2 - 208th ECS Meeting

Y2 - 16 October 2005 through 21 October 2005

ER -