Electrical properties of YSZ/NiO composites prepared by a liquid mixture technique

Vincenzo Esposito, D.Z. de Florio, F.C. Fonseca, E.N.S. Muccillo, R. Muccillo, E. Traversa

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We report the preparation and characterization of yttria-stabilized zirconia/nickel oxide composites (YSZ/NiO). This composite is the precursor material of the cermet YSZ/Ni, which is used as solid oxide fuel cell anode material. The performance of the anode is strongly dependent on the microstructural properties of the cermet. Therefore, the control of the microstructure of the YSZ/NiO composite is a key step for the fabrication of high-performance anodes. In this study, the composites were prepared by a modified liquid mixture technique. Scanning electron microscopy analysis evidenced the good dispersion of the phases and that NiO nanoparticles are spread over the YSZ surface. Sintered pellets were studied by X-ray diffraction and impedance spectroscopy. The main results show that the composite is comprised of a well-dispersed mixture of the two phases. The electrical conductivity data show that there is a strong dependence of the transport mechanism on the relative composition of phases. © 2005 Elsevier Ltd. All rights reserved.
Original languageEnglish
JournalJournal of the European Ceramic Society
Volume25
Pages (from-to)2637-2641
ISSN0955-2219
DOIs
Publication statusPublished - 2005
Externally publishedYes

Cite this

Esposito, Vincenzo ; de Florio, D.Z. ; Fonseca, F.C. ; Muccillo, E.N.S. ; Muccillo, R. ; Traversa, E. / Electrical properties of YSZ/NiO composites prepared by a liquid mixture technique. In: Journal of the European Ceramic Society. 2005 ; Vol. 25. pp. 2637-2641.
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title = "Electrical properties of YSZ/NiO composites prepared by a liquid mixture technique",
abstract = "We report the preparation and characterization of yttria-stabilized zirconia/nickel oxide composites (YSZ/NiO). This composite is the precursor material of the cermet YSZ/Ni, which is used as solid oxide fuel cell anode material. The performance of the anode is strongly dependent on the microstructural properties of the cermet. Therefore, the control of the microstructure of the YSZ/NiO composite is a key step for the fabrication of high-performance anodes. In this study, the composites were prepared by a modified liquid mixture technique. Scanning electron microscopy analysis evidenced the good dispersion of the phases and that NiO nanoparticles are spread over the YSZ surface. Sintered pellets were studied by X-ray diffraction and impedance spectroscopy. The main results show that the composite is comprised of a well-dispersed mixture of the two phases. The electrical conductivity data show that there is a strong dependence of the transport mechanism on the relative composition of phases. {\circledC} 2005 Elsevier Ltd. All rights reserved.",
author = "Vincenzo Esposito and {de Florio}, D.Z. and F.C. Fonseca and E.N.S. Muccillo and R. Muccillo and E. Traversa",
year = "2005",
doi = "10.1016/j.jeurceramsoc.2005.03.116",
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pages = "2637--2641",
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Electrical properties of YSZ/NiO composites prepared by a liquid mixture technique. / Esposito, Vincenzo; de Florio, D.Z.; Fonseca, F.C.; Muccillo, E.N.S.; Muccillo, R.; Traversa, E.

In: Journal of the European Ceramic Society, Vol. 25, 2005, p. 2637-2641.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Electrical properties of YSZ/NiO composites prepared by a liquid mixture technique

AU - Esposito, Vincenzo

AU - de Florio, D.Z.

AU - Fonseca, F.C.

AU - Muccillo, E.N.S.

AU - Muccillo, R.

AU - Traversa, E.

PY - 2005

Y1 - 2005

N2 - We report the preparation and characterization of yttria-stabilized zirconia/nickel oxide composites (YSZ/NiO). This composite is the precursor material of the cermet YSZ/Ni, which is used as solid oxide fuel cell anode material. The performance of the anode is strongly dependent on the microstructural properties of the cermet. Therefore, the control of the microstructure of the YSZ/NiO composite is a key step for the fabrication of high-performance anodes. In this study, the composites were prepared by a modified liquid mixture technique. Scanning electron microscopy analysis evidenced the good dispersion of the phases and that NiO nanoparticles are spread over the YSZ surface. Sintered pellets were studied by X-ray diffraction and impedance spectroscopy. The main results show that the composite is comprised of a well-dispersed mixture of the two phases. The electrical conductivity data show that there is a strong dependence of the transport mechanism on the relative composition of phases. © 2005 Elsevier Ltd. All rights reserved.

AB - We report the preparation and characterization of yttria-stabilized zirconia/nickel oxide composites (YSZ/NiO). This composite is the precursor material of the cermet YSZ/Ni, which is used as solid oxide fuel cell anode material. The performance of the anode is strongly dependent on the microstructural properties of the cermet. Therefore, the control of the microstructure of the YSZ/NiO composite is a key step for the fabrication of high-performance anodes. In this study, the composites were prepared by a modified liquid mixture technique. Scanning electron microscopy analysis evidenced the good dispersion of the phases and that NiO nanoparticles are spread over the YSZ surface. Sintered pellets were studied by X-ray diffraction and impedance spectroscopy. The main results show that the composite is comprised of a well-dispersed mixture of the two phases. The electrical conductivity data show that there is a strong dependence of the transport mechanism on the relative composition of phases. © 2005 Elsevier Ltd. All rights reserved.

U2 - 10.1016/j.jeurceramsoc.2005.03.116

DO - 10.1016/j.jeurceramsoc.2005.03.116

M3 - Journal article

VL - 25

SP - 2637

EP - 2641

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

SN - 0955-2219

ER -