Journal
JOURNAL OF POWER SOURCES
Volume 249, Issue -, Pages 520-526Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2013.05.159
Keywords
CuNi-CeO2/YSZ/LSF SOFC; Direct CH4 oxidation; I-V curves; Impedance spectra
Funding
- Ministerio de Educacion y Ciencia (MEC)
- Comunidad de Madrid [DIVERCEL S2009/ENE-1475]
- EU COST [CM1104]
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A CuNi-CeO2/YSZ/LSF solid oxide fuel cell has been fabricated and tested with respect to its electrochemical activity for direct oxidation of dry methane. The electrodes have been prepared by impregnation of corresponding porous YSZ layers, using reverse microemulsions as impregnating medium for the anode (constituted by Cu-Ni at 1:1 atomic ratio in combination with CeO2). On the basis of I-V electrochemical testing complemented by impedance spectroscopy (IS) measurements it is shown the ability of the SOFC for direct oxidation of methane in a rather stable way. Differences in the behavior as a function of operating temperature (1023-1073 K) are also revealed and examined on the basis of analysis of IS spectra. (C) 2013 Elsevier B.V. All rights reserved.
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