dc.contributor.author | Ricote, Sandrine | |
dc.contributor.author | Bonanos, Nikolaos | |
dc.contributor.author | Rørvik, Per Martin | |
dc.contributor.author | Haavik, Camilla | |
dc.date.accessioned | 2020-12-21T08:54:22Z | |
dc.date.available | 2020-12-21T08:54:22Z | |
dc.date.created | 2012-09-05T16:26:47Z | |
dc.date.issued | 2012 | |
dc.identifier.citation | Journal of Power Sources. 2012, 209 172-179. | en_US |
dc.identifier.issn | 0378-7753 | |
dc.identifier.uri | https://hdl.handle.net/11250/2720489 | |
dc.description.abstract | La0.58Sr0.4Co0.2Fe0.8O3−d (LSCF) cathodes have been deposited on proton-conducting BaCe0.2Zr0.7Y0.1O3−d (BCZY27) electrolyte and studied in symmetric cells to investigate the cathode microstructure and electrochemical performance. Three different types of cathodes have been prepared: two prepared from a solution, infiltrated into a screen-printed BZCY27 porous backbone (4 and 12 infiltrations), and one prepared by spray pyrolysis onto a polished electrolyte. In all three cases, LSCF is obtained after annealing at 700 ◦C for 2 h. Analysis of the electrochemical impedance spectra between 450 ◦C and 600 ◦C in air, with varying p(H2O), reveals that the charge transfer contribution is the lowest for the backbone-infiltrated cathode while the oxygen dissociation/adsorption contribution is the lowest for the spray-pyrolyzed cathode. The area specific resistances increase with the water vapor pressure. The area specific resistances obtained are 0.61 ohm cm2 and 0.89 ohm cm2 at 600 ◦C for the spray-pyrolyzed LSCF cell in dry and humidified air, respectively; the corresponding resistances are 0.63 ohm cm2 and 0.98 oh cm2 for the 12 times infiltrated LSCF cell. These resistances are the lowest reported for LSCF cathodes on Ba(Ce,Zr)O3-based electrolytes and show the promise of low-temperature fabrication methods for these systems. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Elsevier | en_US |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no | * |
dc.subject | infiltration | en_US |
dc.subject | cathode material | en_US |
dc.subject | spray pyrolysis | en_US |
dc.subject | PCFC | en_US |
dc.subject | LSCF | en_US |
dc.subject | BCZY | en_US |
dc.title | Microstructure and performance of La0.58Sr0.4Co0.2Fe0.8O3−d cathodes deposited on BaCe0.2Zr0.7Y0.1O3−d by infiltration and spray pyrolysis | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | acceptedVersion | en_US |
dc.rights.holder | This is the peer-reviewed, accepted manuscript of the article avaliable at ScienceDirect: https://doi.org/10.1016/j.jpowsour.2012.02.090 | en_US |
dc.source.pagenumber | 172-179 | en_US |
dc.source.volume | 209 | en_US |
dc.source.journal | Journal of Power Sources | en_US |
dc.identifier.doi | 10.1016/j.jpowsour.2012.02.090 | |
dc.identifier.cristin | 942530 | |
dc.relation.project | Norges forskningsråd: 197935 | en_US |
cristin.unitcode | 7401,80,3,2 | |
cristin.unitname | Tynnfilm og membranteknologi | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 1 | |