Mauvy, Fabrice and Lenormand, Pascal and Lalanne, Cécile and Ansart, Florence and Bassat, Jean-Marc and Grenier, Jean-Claude and Lamy, Claude Electrochemical characterization of YSZ thick films deposited by dip-coating process. (2007) Journal of Power Sources, 171 (2). 783-788. ISSN 0378-7753
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(Document in English)
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Official URL: http://dx.doi.org/10.1016/j.jpowsour.2007.06.061
Abstract
Yttria stabilized zirconia (YSZ, 8% Y2O3) thick films were coated on dense alumina substrates by a dip-coating process. The suspension was obtained by addition of a polymeric matrix in a stable suspension of commercial YSZ (Tosoh) powders dispersed in an azeotropic mixture MEK–EtOH. The suspension composition was improved by the addition of YSZ Tosoh particles encapsulated by zirconium alkoxide sol containing yttrium nitrate which are the precursors of the 8-YSZ oxide. This optimal formulation allowed preparing, via a dip-coating process, thick films which were, after thermal treatment, homogeneous, dense and crack-free. A specific method was performed to measure the electrical conductivity, i.e. to determine the ionic conductivity of the film: it uses the four-point probe technique combined with ac impedance spectroscopy. The good agreement between the classical two-electrode measurements performed on YSZ pellets and the four-electrode ones performed on YSZ films allows concluding that this method is relevant for characterizing the transport properties of thick films.
Item Type: | Article |
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Additional Information: | Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Journal of Power Sources website : http://www.sciencedirect.com/science/journal/03787753 |
Audience (journal): | International peer-reviewed journal |
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Institution: | Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) Other partners > Ecole Nationale Supérieure de Chimie et de Physique de Bordeaux - ENSCPB (FRANCE) Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE) French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE) Other partners > Université de Bordeaux 1 (FRANCE) |
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Deposited On: | 02 Jun 2009 12:03 |
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