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 | |
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