[Sans titre]
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | BEN YAHIA, Hamdi | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | MAUVY, Fabrice | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | GRENIER, Jean-Claude | |
| dc.date.issued | 2010 | |
| dc.identifier.issn | 0022-4596 | |
| dc.description.abstractEn | Misfit-type Ca<sub>3−</sub><i><sub>x</sub></i>La<i><sub>x</sub></i>Co<sub>4</sub>O<sub>9+</sub><i><sub>δ</sub></i> (<i>x</i>=0, 0.3) oxides were synthesised to be evaluated as possible cathode materials for proton conducting fuel cells (PCFCs) based on BaCe<sub>0.9</sub>Y<sub>0.1</sub>O<sub>3−</sub><i><sub>δ</sub></i> (BCY10) dense ceramic electrolyte. The electrical conductivity value of Ca<sub>2.7</sub>La<sub>0.3</sub>Co<sub>4</sub>O<sub>9+</sub><i><sub>δ</sub></i> (<i>σ</i>≈53 S cm<sup>–1</sup> at 600 °C) is in the range of usually required value for a cathode application (about 50–100 S cm<sup>–1</sup>). In order to test the performance of each compound as cathode material, impedance measurements were carried out on Ca<sub>3−</sub><i><sub>x</sub></i>La<i><sub>x</sub></i>Co<sub>4</sub>O<sub>9+</sub><i><sub>δ</sub></i>/BaCe<sub>0.9</sub>Y<sub>0.1</sub>O<sub>3−</sub><i><sub>δ</sub></i>/Ca<sub>3−</sub><i><sub>x</sub></i>La<i><sub>x</sub></i>Co<sub>4</sub>O<sub>9+</sub><i><sub>δ</sub></i> symmetrical half cells over the temperature range 400–800 °C under wet air. A promising electrocatalytic activity has been observed with both compounds Ca<sub>3</sub>Co<sub>4</sub>O<sub>9+</sub><i><sub>δ</sub></i> and Ca<sub>2.7</sub>La<sub>0.3</sub>Co<sub>4</sub>O<sub>9+</sub><i><sub>δ</sub></i>. Factually, the area specific resistance obtained was about 2.2 Ω cm<sup>2</sup> at 600 °C. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.jssc.2009.12.014 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Solid State Chemistry | |
| bordeaux.page | 527-531 | |
| bordeaux.volume | 183 | |
| bordeaux.issue | 3 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00467042 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| dc.subject.es | Layered cobaltite oxide | |
| dc.subject.es | Cathode | |
| dc.subject.es | Proton conductor | |
| dc.subject.es | PCFC | |
| dc.subject.es | Y-doped BaCeO<sub>3</sub> | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00467042v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Solid%20State%20Chemistry&rft.date=2010&rft.volume=183&rft.issue=3&rft.spage=527-531&rft.epage=527-531&rft.eissn=0022-4596&rft.issn=0022-4596&rft.au=BEN%20YAHIA,%20Hamdi&MAUVY,%20Fabrice&GRENIER,%20Jean-Claude&rft.genre=article |
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