Effect of nickel content and preparation method on the performance of Ni-Al2O3 towards the applications in solid oxide fuel cells
|dc.identifier.citation||Wang, W. and Ran, R. and Su, C. and Shao, Z. and Jung, D. and Seo, S. and Lee, S. 2011. Effect of nickel content and preparation method on the performance of Ni-Al2O3 towards the applications in solid oxide fuel cells. International Journal of Hydrogen Energy. 36 (17): pp. 10958-10967.|
Ni-Al2O3 composites with varying contents of nickel are synthesized via a glycine nitrate process (GNP) and an impregnation process (IMP). Their potential application as an anode functional layer for internal methane CO2 reforming in a solid oxide fuel cell is investigated. H2-TPR results show that the chemical interaction between NiO and Al2O3 decreases as the nickel content increases. Catalytic tests demonstrate that 15 wt.% Ni-Al2O3 catalysts exhibit the best catalytic activity for methane CO2 reforming. However, the carbon formation rates over Ni-Al2O3 prepared via GNP are lower than those over Ni-Al2O3 prepared via IMP using the same amounts of nickel, with the exception of the 1 wt.% Ni-Al2O 3 catalyst. Raman spectroscopy and O2-TPO results indicate that the degree of graphitization and the amount of carbon deposited on the 15 wt.% Ni-Al2O3 catalyst synthesized via GNP are lower than those of the catalyst prepared via IMP following a 60 h stability test. A cell with a 15 wt.% Ni-Al2O3 catalyst layer prepared via GNP is fabricated that delivers a peak power density of 1006 mW cm-2 at 850 °C when operating on methane-CO2 gas mixtures, which is comparable to that observed when operating on hydrogen fuel. © 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
|dc.title||Effect of nickel content and preparation method on the performance of Ni-Al2O3 towards the applications in solid oxide fuel cells|
|dcterms.source.title||International Journal of Hydrogen Energy|
|curtin.department||Department of Chemical Engineering|
|curtin.accessStatus||Fulltext not available|
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