Promising performances for a La0.6Sr0.4Co0.8Fe0.2O3-δ cathode with a dense interfacial layer at the electrode-electrolyte interface
| Autor: | M. Mascot, Jean-Claude Carru, K. Dumaisnil, Rose-Noëlle Vannier, Didier Fasquelle, Aurélie Rolle |
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| Přispěvatelé: | Unité de Dynamique et Structure des Matériaux Moléculaires (UDSMM), Université du Littoral Côte d'Opale (ULCO), Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille, Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Spin coating
Materials science 020209 energy General Chemical Engineering General Engineering Analytical chemistry General Physics and Astronomy 02 engineering and technology Electrolyte [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology Electrochemistry Dissociation (chemistry) Cathode Dielectric spectroscopy law.invention Adsorption law Electrode 0202 electrical engineering electronic engineering information engineering General Materials Science 0210 nano-technology ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Ionics Ionics, Springer Verlag, 2017 Ionics, 2017, 23 (8), pp.2125-2132 |
| ISSN: | 0947-7047 1862-0760 |
| Popis: | International audience; As for the commonly studied La0.6Sr0.4Co0.2Fe0.8O3-δ (6428), here, a very low area-specific resistance (ASR) was measured for La0.6Sr0.4Co0.8Fe0.2O3-δ (6482) cathode deposited on a Ce0.9Gd0.1O2-δ (GDC) electrolyte with addition of a thin (1 μm) dense LSCF film deposited by spin coating at the interface between the GDC electrolyte and a 40-μm-thick screen-printed electrode. The ASR ranged from 1 Ω.cm2 at 500 °C, 0.11 Ω.cm2 at 625 °C and value as low as 0.03 Ω.cm2 at 700 °C. Impedance spectra collected in between 500 and 700 °C were carefully studied. They could all be modelled with two R//CPE in series which are likely associated to the oxygen reduction reaction itself (dissociation/adsorption/ionization) at low frequency and to the oxide ion transfer at the electrode/electrolyte interface at high frequency. |
| Databáze: | OpenAIRE |
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