Low-temperature deposition of undoped ceria thin films in scCO2 as improved interlayers for IT-SOFC
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| hal.structure.identifier | Polymer Science and Engineering Department | |
| dc.contributor.author | MESGUICH, David | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | AYMONIER, Cyril | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | BASSAT, Jean-Marc. | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | MAUVY, Fabrice | |
| hal.structure.identifier | Polymer Science and Engineering Department | |
| hal.structure.identifier | Chemical Engineering Department | |
| dc.contributor.author | YOU, Eunyoung | |
| hal.structure.identifier | Polymer Science and Engineering Department | |
| dc.contributor.author | WATKINS, James J. | |
| dc.date.issued | 2011 | |
| dc.identifier.issn | 0897-4756 | |
| dc.description.abstractEn | Cerium oxide films were deposited onto various yttria-stabilized zirconia (YSZ) electrolytes using supercritical fluid deposition (SFD) in a cold wall reactor. Deposition of ceria thin films (20-240 nm) was carried out via hydrolysis of a Ce precursor at 250-300 °C (typically 30 min) in supercritical CO<sub>2</sub> (scCO<sub>2</sub>). The as-deposited films were continuous, dense and crystalline. They exhibited some carbon contamination which was eliminated in all cases by postannealing the films at 400 °C. Film microstructure depends on the hydrolysis conditions (water to cerium molar ratio), on the substrate nature (Si wafers or YSZ pellets) and on the YSZ pellet thickness (100 μm or 1 mm). Ceria films were then used as interlayers for intermediate temperature solid oxide fuel cells (IT-SOFC) between the YSZ electrolyte and the Nd<sub>2</sub>NiO<sub>4+δ</sub> cathode layer subsequently deposited. The electrochemical properties of the SOFC symmetrical half cells were investigated by electrochemical impedance spectroscopy (EIS). The presence of the undoped ceria layer deposited in scCO<sub>2</sub> lowers the resistance of the cell, compared both to cells with an optimized doped ceria layer deposited by screen printing and to cells without any interlayer. | |
| dc.language.iso | en | |
| dc.publisher | American Chemical Society | |
| dc.title.en | Low-temperature deposition of undoped ceria thin films in scCO2 as improved interlayers for IT-SOFC | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1021/cm2012846 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Chemistry of Materials | |
| bordeaux.page | 5323-5330 | |
| bordeaux.volume | 23 | |
| bordeaux.issue | 24 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00654561 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| dc.subject.es | Solid oxide fuel cells | |
| dc.subject.es | Low temperature | |
| dc.subject.es | Conformal deposition | |
| dc.subject.es | ASR resistance | |
| dc.subject.es | Interlayer | |
| dc.subject.es | Ceria | |
| dc.subject.es | Deposition | |
| dc.subject.es | Supercritical fluids | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00654561v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Chemistry%20of%20Materials&rft.date=2011&rft.volume=23&rft.issue=24&rft.spage=5323-5330&rft.epage=5323-5330&rft.eissn=0897-4756&rft.issn=0897-4756&rft.au=MESGUICH,%20David&AYMONIER,%20Cyril&BASSAT,%20Jean-Marc.&MAUVY,%20Fabrice&YOU,%20Eunyoung&rft.genre=article |
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