Combustion synthesis and characterisation of Ni-MO-YSZ (M = Mg, Ca, Al-2/3) cermet anodes for SOFCs
authors Chinarro, E; Figueiredo, FM; Mather, GC; Jurado, JR; Frade, JR
nationality International
journal JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
author keywords fuel cells; powders-solid state reaction; microstructure-final; cermet anodes
keywords OXIDE FUEL-CELLS; ELECTROCHEMICAL-BEHAVIOR
abstract The performance of Ni-yuria-stabilised zirconia (YSZ) cermet anodes can deteriorate with time and on redox and thermal cycling due to coarsening and/or oxidation of the Ni particles. Small additions of a second oxide phase may arrest degradation. In this work, Ni-YSZ-MO compositions (M = Mg, Ca, Al-2/3. respectively, NZM NZC, NZA) were prepared by combustion. Phase composition and microstructural characteristics were assessed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Powders calcined at 1450 degrees C consist of mixtures of Ni(Mg)O-YSZ, NiO-YSZ-CaZrO3 and NiO-YSZ-NiAl2O4 particles for NZM, NZC and NZA, respectively. The sintered and reduced cermets are composed of a homogeneous and well-dispersed distribution of Ni, YSZ and secondary oxide components. (c) 2007 Elsevier Ltd. All rights reserved.
publisher ELSEVIER SCI LTD
issn 0955-2219
year published 2007
volume 27
issue 13-15
beginning page 4233
ending page 4236
digital object identifier (doi) 10.1016/j.jeurceramsoc.2007.02.115
web of science category Materials Science, Ceramics
subject category Materials Science
unique article identifier WOS:000248822800140
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