OATAO - Open Archive Toulouse Archive Ouverte Open Access Week

Development of lanthanum nickelate as a cathode for use in intermediate temperature solid oxide fuel cells

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, vol. 192 (n° 1). pp. 531-534. ISSN 0167-2738

[img]
Preview
(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
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
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > Imperial College London (UNITED KINGDOM)
Laboratory name:
Statistics:download
Deposited By: Denis Faragou

Repository Staff Only: item control page