Compatibility evaluation between La{sub 2}Mo{sub 2}O{sub 9} fast oxide-ion conductor and Ni-based materials

Journal Article · Mon May 15 04:00:00 EDT 2006 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2006.01.051· OSTI ID:20784994

Corbel, Gwenael ^[1]; Lacorre, Philippe ^[1]

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1. Laboratoire des Oxydes et Fluorures, UMR-6010 CNRS, Universite du Maine, Avenue Olivier Messiaen, 72085 Le Mans Cedex 9 (France)

The chemical reactivity of La{sub 2}NiO{sub 4+} {sub {delta}} and nickel metal or nickel oxide with fast oxide-ion conductor La{sub 2}Mo{sub 2}O{sub 9} is investigated in the annealing temperature range between 600 and 1000 deg. C, using room temperature X-ray powder diffraction. Within the La{sub 2}NiO{sub 4+} {sub {delta}} /La{sub 2}Mo{sub 2}O{sub 9} system, subsequent reaction is evidenced at relatively low annealing temperature (600 deg. C), with formation of La{sub 2}MoO{sub 6} and NiO. The reaction is complete at 1000 deg. C. At reverse, no reaction occurs between Ni or NiO and La{sub 2}Mo{sub 2}O{sub 9} up to 1000 deg. C. Together with a previous work [G. Corbel, S. Mestiri, P. Lacorre, Solid State Sci. 7 (2005) 1216], the current study shows that Ni-CGO cermets might be chemically and mechanically compatible anode materials to work with LAMOX electrolytes in solid oxide fuel cells.

• OSTI ID: 20784994
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 5 Vol. 179; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ANNEALING
ANODES
CERMETS
ELECTROLYTES
IONS
LANTHANUM COMPOUNDS
MOLYBDATES
NICKEL
NICKEL OXIDES
SOLID OXIDE FUEL CELLS
TEMPERATURE RANGE 0273-0400 K
THERMAL EXPANSION
X-RAY DIFFRACTION