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Performances of Solid Oxide Cells with La$_{0.97}$Ni$_{0.5}$Co$_{0.5}$O$_{3-\delta}$ as Air-Electrodes

Ma, Qianli; Dierickx, Sebastian; Vibhu, Vaibhav; Sebold, Doris; de Haart, Lambertus G. J.; Weber, André; Guillon, Olivier; Menzler, Norbert H.

Abstract:
Based on previous studies of perovskites in the quasi-ternary system LaFeO$_{3}$–LaCoO$_{3}$–LaNiO$_{3}$, La$_{0.97}$Ni$_{0.5}$Co$_{0.5}$O$_{3}$ (LNC) is chosen as the most promising air-electrode material in the series for solid oxide cells (SOCs). The properties of the material itself have been investigated in detail. However, the evaluation of LNC97 air electrodes in practical SOCs is still at a very early stage. In the present study, SOCs were prepared based on LNC97 air electrodes. The I-U performance of the SOCs in both solid oxide fuel cell (SOFC) and solid oxide electrolysis cell (SOEC) modes, i.e. reversible SOCs (r-SOCs), was investigated systematically for different air-electrode designs, temperatures and fuel gases. In general, the performance of the r-SOCs tested in the present study is higher than the published results of other LaFeO$_{3}$–LaCoO$_{3}$–LaNiO$_{3}$-based SOCs and is comparable to or even better than state-of-the-art La$_{1-x}$Sr$_{x}$Fe$_{1-y}$Co$_{y}$O$_{3}$ (LSCF)-based SOCs. Mid-term operation of about 1000 h for SOCs in both SOFC and SOEC modes primarily proved the stability of LNC97-based air electrodes. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000120202
Veröffentlicht am 16.06.2020
Originalveröffentlichung
DOI: 10.1149/1945-7111/ab91cc
Scopus
Zitationen: 1
Web of Science
Zitationen: 1
Dimensions
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Werkstoffe der Elektrotechnik (IAM-WET)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 1945-7111
KITopen-ID: 1000120202
Erschienen in Journal of the Electrochemical Society
Verlag Electrochemical Society
Band 167
Heft 8
Seiten Art.Nr. 084522
Vorab online veröffentlicht am 26.05.2020
Nachgewiesen in Dimensions
Web of Science
Scopus
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