Sayers, R. and Rieu, Mathilde and Lenormand, Pascal and Ansart, Florence and Kilner, J. A. and Skinner, S. J. Development of lanthanum nickelate as a cathode for use in intermediate temperature solid oxide fuel cells. (2011) Solid State Ionics, 192 (1). 531-534. ISSN 0167-2738
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(Document in English)
PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader 239kB |
Official URL: http://dx.doi.org/10.1016/j.ssi.2010.02.014
Abstract
The performance of lanthanum nickelate, La2NiO4+δ (LNO), as a cathode in IT-SOFCs with the electrolyte cerium gadolinium oxide, Ce0.9Gd0.1O2−δ (CGO), has been investigated by AC impedance spectroscopy of symmetrical cells. A significant reduction in the area specific resistance (ASR) has been achieved with a layered cathode structure consisting of a thin compact LNO layer between the dense electrolyte and porous electrode. This decrease in ASR is believed to be a result of contact at the electrolyte/cathode boundary enhancing the oxygen ion transfer to the electrolyte. An ASR of 1.0 Ω cm2 at 700 °C was measured in a symmetrical cell with this layered structure, compared to an ASR of 7.4 Ω cm2 in a cell without the compact layer. In addition, further improvements were observed by enhancing the cell current collection and it is anticipated that a symmetrical cell consisting of a layered structure with adequate current collection would lower these ASR values further.
Item Type: | Article |
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Additional Information: | Thanks to Elsevier editor. The orinal version is available at http://www.sciencedirect.com The original PDF of the article can be found at Solid State Ionics website: http://www.sciencedirect.com/science/article/pii/S0167273810000767 |
Audience (journal): | International peer-reviewed journal |
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Institution: | French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE) Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE) Other partners > Imperial College London (UNITED KINGDOM) |
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Deposited On: | 04 May 2012 12:40 |
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