Preparation and characterization of lead ruthenate based composite cathodes for SOFC applications

Vincenzo Esposito; Enrico Traversa; Eric D. Wachsman

Preparation and characterization of lead ruthenate based composite cathodes for SOFC applications

Vincenzo Esposito^*, Enrico Traversa, Eric D. Wachsman

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

2 Scopus citations

Abstract

Nanometric pyrochlore lead ruthenate (Pb₂Ru₂O _6.5) powders were prepared using a new chemical route as a possible candidate for cathode materials in solid oxide fuel cells (SOFCs). Pb ₂Ru₂O_6.5 was mixed with yttria-stabilized zirconia (YSZ) and erbia-stabilized bismuth oxide (ESB) to fabricate porous composite electrodes. Pure pyrochlore or composite electrodes were deposited as thick films onto YSZ and ESB electrolytes. Powders and films were analyzed using X-ray diffraction (XRD) analysis and field emission scanning electron microscopy (FE-SEM). Electrochemical features of the electrodes were investigated using electrochemical impedance spectroscopy (EIS) measurements at different temperatures in air for symmetric cells. The composite electrodes were compared to single Pb₂Ru₂O_6.5 phase electrodes to evaluate the effect on polarization of the addition of the pure ionic conductor phase in the electrodes.

Original language	English (US)
Article number	K8.10
Pages (from-to)	217-222
Number of pages	6
Journal	Materials Research Society Symposium Proceedings
Volume	835
State	Published - 2005
Externally published	Yes
Event	Solid State Ionics - 2004 - Boston, MA, United States Duration: Nov 29 2004 → Dec 2 2004

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Cite this

@article{f21e472cd4b6433a80ff17441f557315,

title = "Preparation and characterization of lead ruthenate based composite cathodes for SOFC applications",

abstract = "Nanometric pyrochlore lead ruthenate (Pb2Ru2O 6.5) powders were prepared using a new chemical route as a possible candidate for cathode materials in solid oxide fuel cells (SOFCs). Pb 2Ru2O6.5 was mixed with yttria-stabilized zirconia (YSZ) and erbia-stabilized bismuth oxide (ESB) to fabricate porous composite electrodes. Pure pyrochlore or composite electrodes were deposited as thick films onto YSZ and ESB electrolytes. Powders and films were analyzed using X-ray diffraction (XRD) analysis and field emission scanning electron microscopy (FE-SEM). Electrochemical features of the electrodes were investigated using electrochemical impedance spectroscopy (EIS) measurements at different temperatures in air for symmetric cells. The composite electrodes were compared to single Pb2Ru2O6.5 phase electrodes to evaluate the effect on polarization of the addition of the pure ionic conductor phase in the electrodes.",

author = "Vincenzo Esposito and Enrico Traversa and Wachsman, {Eric D.}",

year = "2005",

language = "English (US)",

volume = "835",

pages = "217--222",

journal = "Materials Research Society Symposium Proceedings",

issn = "0272-9172",

publisher = "Materials Research Society",

note = "Solid State Ionics - 2004 ; Conference date: 29-11-2004 Through 02-12-2004",

}

TY - JOUR

T1 - Preparation and characterization of lead ruthenate based composite cathodes for SOFC applications

AU - Esposito, Vincenzo

AU - Traversa, Enrico

AU - Wachsman, Eric D.

PY - 2005

Y1 - 2005

N2 - Nanometric pyrochlore lead ruthenate (Pb2Ru2O 6.5) powders were prepared using a new chemical route as a possible candidate for cathode materials in solid oxide fuel cells (SOFCs). Pb 2Ru2O6.5 was mixed with yttria-stabilized zirconia (YSZ) and erbia-stabilized bismuth oxide (ESB) to fabricate porous composite electrodes. Pure pyrochlore or composite electrodes were deposited as thick films onto YSZ and ESB electrolytes. Powders and films were analyzed using X-ray diffraction (XRD) analysis and field emission scanning electron microscopy (FE-SEM). Electrochemical features of the electrodes were investigated using electrochemical impedance spectroscopy (EIS) measurements at different temperatures in air for symmetric cells. The composite electrodes were compared to single Pb2Ru2O6.5 phase electrodes to evaluate the effect on polarization of the addition of the pure ionic conductor phase in the electrodes.

AB - Nanometric pyrochlore lead ruthenate (Pb2Ru2O 6.5) powders were prepared using a new chemical route as a possible candidate for cathode materials in solid oxide fuel cells (SOFCs). Pb 2Ru2O6.5 was mixed with yttria-stabilized zirconia (YSZ) and erbia-stabilized bismuth oxide (ESB) to fabricate porous composite electrodes. Pure pyrochlore or composite electrodes were deposited as thick films onto YSZ and ESB electrolytes. Powders and films were analyzed using X-ray diffraction (XRD) analysis and field emission scanning electron microscopy (FE-SEM). Electrochemical features of the electrodes were investigated using electrochemical impedance spectroscopy (EIS) measurements at different temperatures in air for symmetric cells. The composite electrodes were compared to single Pb2Ru2O6.5 phase electrodes to evaluate the effect on polarization of the addition of the pure ionic conductor phase in the electrodes.

UR - http://www.scopus.com/inward/record.url?scp=20344364876&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:20344364876

SN - 0272-9172

VL - 835

SP - 217

EP - 222

JO - Materials Research Society Symposium Proceedings

JF - Materials Research Society Symposium Proceedings

M1 - K8.10

T2 - Solid State Ionics - 2004

Y2 - 29 November 2004 through 2 December 2004

ER -

Preparation and characterization of lead ruthenate based composite cathodes for SOFC applications

Abstract

ASJC Scopus subject areas

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