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Effect of graphite pore former on oxygen electrodes prepared with La<sub>0.6</sub>Sr<sub>0.4</sub>CoO<sub>3−</sub><i><sub>δ</sub></i> nanoparticles
| hal.structure.identifier | Eidgenössische Materialprüfanstalt EMPA | |
| dc.contributor.author | PRESTAT, Michel | |
| hal.structure.identifier | Eidgenössische Materialprüfanstalt EMPA | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | MORANDI, Anne | |
| hal.structure.identifier | Eidgenössische Materialprüfanstalt EMPA | |
| dc.contributor.author | HEEL, Andre | |
| hal.structure.identifier | Eidgenössische Materialprüfanstalt EMPA | |
| dc.contributor.author | HOLZER, Lorenz | |
| hal.structure.identifier | Eidgenössische Materialprüfanstalt EMPA | |
| dc.contributor.author | HOTAPPELS, P. | |
| hal.structure.identifier | Eidgenössische Materialprüfanstalt EMPA | |
| dc.contributor.author | GRAULE, Thomas | |
| dc.date.issued | 2010 | |
| dc.identifier.issn | 1388-2481 | |
| dc.description.abstractEn | This study aimed at fabricating porous crack-free and delamination-free La<sub>0.6</sub>Sr<sub>0.4</sub>CoO<sub>3−</sub><i><sub>δ</sub></i> electrodes using nanopowders and investigating oxygen reduction (occurring at solid oxide fuel cell cathodes) and oxygen evolution (occurring at solid oxide electrolysis cell anodes) at 600 °C in air. The electrodes were deposited by screen-printing on Ce<sub>0.8</sub>Gd<sub>0.2</sub>O<sub>1.9</sub> substrates. The pastes were prepared with nanoparticles synthesised by flame spray synthesis and graphite pore former. Without graphite, the electrodes sintered at 1000 °C exhibit relatively low porosity and significant densification which led to partial delamination and large overpotentials. The addition of graphite, which was removed by combustion at ca. 650 °C during sintering, markedly improves electrode performance by increasing porosity and reducing densification. A minimal overpotential for both the oxygen reduction and oxygen evolution was reached for a layer porosity of ca. 50–60 vol.%. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Nanoparticles | |
| dc.subject.en | Pore former | |
| dc.subject.en | Microstructure | |
| dc.subject.en | Mixed ionic-electronic conductors | |
| dc.subject.en | Oxygen reduction | |
| dc.subject.en | Oxygen evolution | |
| dc.title.en | Effect of graphite pore former on oxygen electrodes prepared with La<sub>0.6</sub>Sr<sub>0.4</sub>CoO<sub>3−</sub><i><sub>δ</sub></i> nanoparticles | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.elecom.2009.12.018 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Electrochemistry Communications | |
| bordeaux.page | 292-295 | |
| bordeaux.volume | 12 | |
| bordeaux.issue | 2 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00462598 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00462598v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Electrochemistry%20Communications&rft.date=2010&rft.volume=12&rft.issue=2&rft.spage=292-295&rft.epage=292-295&rft.eissn=1388-2481&rft.issn=1388-2481&rft.au=PRESTAT,%20Michel&MORANDI,%20Anne&HEEL,%20Andre&HOLZER,%20Lorenz&HOTAPPELS,%20P.&rft.genre=article |
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