Mixed ionic-electronic YSZ/Ni composite for SOFC anodes with high electrical conductivity

Fabio C. Fonseca, Daniel Z. De Florio, Vincenzo Esposito, Enrico Traversa, Eliana N. S. Muccillo, Reginaldo Muccillo

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The preparation of the Zr O2: 8 mol % Y2 O3 NiO (YSZ/NiO) composites by a modified liquid mixture technique is reported. Nanometric NiO particles dispersed over the yttria-stabilized zirconia (YSZ) were prepared, resulting in dense sintered specimens with no solid solution formation between the oxides. Such a feature allowed for the electrical characterization of the composites in a wide range of relative volume fraction, temperature, and oxygen partial pressure. The main results indicate that the composites have high electrical conductivity, and the transport properties in these mixed ionic-electronic (MIEC) composites are strongly dependent on the relative volume fraction of the phases, microstructure, and temperature. These parameters should hence be taken into consideration for the optimized design of MIEC composites for electrochemical applications. In this context, the composite was reduced under H2 for the preparation of high-conductivity YSZ/Ni cermets for use as solid oxide fuel cell anode material with relatively low metal content. © 2005 The Electrochemical Society. All rights reserved.
Original languageEnglish
JournalJournal of the Electrochemical Society
Volume153
Issue number2
Pages (from-to)A354-A360
ISSN0013-4651
DOIs
Publication statusPublished - 2006
Externally publishedYes

Cite this

Fonseca, Fabio C. ; De Florio, Daniel Z. ; Esposito, Vincenzo ; Traversa, Enrico ; Muccillo, Eliana N. S. ; Muccillo, Reginaldo. / Mixed ionic-electronic YSZ/Ni composite for SOFC anodes with high electrical conductivity. In: Journal of the Electrochemical Society. 2006 ; Vol. 153, No. 2. pp. A354-A360.
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title = "Mixed ionic-electronic YSZ/Ni composite for SOFC anodes with high electrical conductivity",
abstract = "The preparation of the Zr O2: 8 mol {\%} Y2 O3 NiO (YSZ/NiO) composites by a modified liquid mixture technique is reported. Nanometric NiO particles dispersed over the yttria-stabilized zirconia (YSZ) were prepared, resulting in dense sintered specimens with no solid solution formation between the oxides. Such a feature allowed for the electrical characterization of the composites in a wide range of relative volume fraction, temperature, and oxygen partial pressure. The main results indicate that the composites have high electrical conductivity, and the transport properties in these mixed ionic-electronic (MIEC) composites are strongly dependent on the relative volume fraction of the phases, microstructure, and temperature. These parameters should hence be taken into consideration for the optimized design of MIEC composites for electrochemical applications. In this context, the composite was reduced under H2 for the preparation of high-conductivity YSZ/Ni cermets for use as solid oxide fuel cell anode material with relatively low metal content. {\circledC} 2005 The Electrochemical Society. All rights reserved.",
author = "Fonseca, {Fabio C.} and {De Florio}, {Daniel Z.} and Vincenzo Esposito and Enrico Traversa and Muccillo, {Eliana N. S.} and Reginaldo Muccillo",
year = "2006",
doi = "10.1149/1.2149312",
language = "English",
volume = "153",
pages = "A354--A360",
journal = "Journal of The Electrochemical Society",
issn = "0013-4651",
publisher = "The Electrochemical Society",
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Mixed ionic-electronic YSZ/Ni composite for SOFC anodes with high electrical conductivity. / Fonseca, Fabio C.; De Florio, Daniel Z.; Esposito, Vincenzo; Traversa, Enrico; Muccillo, Eliana N. S.; Muccillo, Reginaldo.

In: Journal of the Electrochemical Society, Vol. 153, No. 2, 2006, p. A354-A360.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Mixed ionic-electronic YSZ/Ni composite for SOFC anodes with high electrical conductivity

AU - Fonseca, Fabio C.

AU - De Florio, Daniel Z.

AU - Esposito, Vincenzo

AU - Traversa, Enrico

AU - Muccillo, Eliana N. S.

AU - Muccillo, Reginaldo

PY - 2006

Y1 - 2006

N2 - The preparation of the Zr O2: 8 mol % Y2 O3 NiO (YSZ/NiO) composites by a modified liquid mixture technique is reported. Nanometric NiO particles dispersed over the yttria-stabilized zirconia (YSZ) were prepared, resulting in dense sintered specimens with no solid solution formation between the oxides. Such a feature allowed for the electrical characterization of the composites in a wide range of relative volume fraction, temperature, and oxygen partial pressure. The main results indicate that the composites have high electrical conductivity, and the transport properties in these mixed ionic-electronic (MIEC) composites are strongly dependent on the relative volume fraction of the phases, microstructure, and temperature. These parameters should hence be taken into consideration for the optimized design of MIEC composites for electrochemical applications. In this context, the composite was reduced under H2 for the preparation of high-conductivity YSZ/Ni cermets for use as solid oxide fuel cell anode material with relatively low metal content. © 2005 The Electrochemical Society. All rights reserved.

AB - The preparation of the Zr O2: 8 mol % Y2 O3 NiO (YSZ/NiO) composites by a modified liquid mixture technique is reported. Nanometric NiO particles dispersed over the yttria-stabilized zirconia (YSZ) were prepared, resulting in dense sintered specimens with no solid solution formation between the oxides. Such a feature allowed for the electrical characterization of the composites in a wide range of relative volume fraction, temperature, and oxygen partial pressure. The main results indicate that the composites have high electrical conductivity, and the transport properties in these mixed ionic-electronic (MIEC) composites are strongly dependent on the relative volume fraction of the phases, microstructure, and temperature. These parameters should hence be taken into consideration for the optimized design of MIEC composites for electrochemical applications. In this context, the composite was reduced under H2 for the preparation of high-conductivity YSZ/Ni cermets for use as solid oxide fuel cell anode material with relatively low metal content. © 2005 The Electrochemical Society. All rights reserved.

U2 - 10.1149/1.2149312

DO - 10.1149/1.2149312

M3 - Journal article

VL - 153

SP - A354-A360

JO - Journal of The Electrochemical Society

JF - Journal of The Electrochemical Society

SN - 0013-4651

IS - 2

ER -