Journal Article

FZJ-2020-01199

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Selection of cathode materials for forsterite-supported solid oxide fuel cells – Part II: Electro-catalytic activity

Grimm, F. (Corresponding author)FZJ* ; Neubert, M. ; Karl, J. ; Menzler, N. H.FZJ* ; Guillon, O.FZJ*

2020
Elsevier New York, NY [u.a.]

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Please use a persistent id in citations: http://hdl.handle.net/2128/24512  doi:10.1016/j.jpowsour.2020.227811

Abstract: Based on the interactions and the formation of secondary phases of various SOFC cathode materials if they are processed with the restrictions of an inert-supported cell utilizing forsterite as support material (described in Part I), impedance measurements and cell tests were performed to clarify the impact of the described interactions on the material combinations electrocatalytic performance.Subsequently Part II focusses on the preselection of a cathode material displaying a higher catalytic activity compared to the currently used LSM/8YSZ cathode of the inert-supported cell concept. In order to do so symmetrical cells, mimicking the processing, were fabricated by co-firing various cathodes (La0.58Sr0.4Co0.2Fe0.8O3; Pr0.58Sr0.4Co0.2Fe0.8O3; La0.58Sr0.4CoO3; La0.58Sr0.4FeO3; La0.58Ca0.4Co0.2Fe0.8O3; (La0.8Sr0.2)0.95Fe0.2Mn0.8O3; (La0.9Sr0.1)0.95Fe0.7Mn0.3O3) together with an La0.65Sr0.3MnO3 current collector layer (CCL) or with one LSM CCL containing 20 wt% of forsterite.The results indicate that the catalytic activity of the cathodes cannot simply be related to the number or amount of secondary phases formed during the co-firing if forsterite is present or not as LSF, which displayed the formation of numerous secondary phases (Part I), exhibits the best catalytic activity. The following ascending order of catalytic activity was obtained: LSF (0.25 Ωcm2) > LSM/8YSZ > PSCF > LSFM > LSCF > LCCF > LSC (77.43 Ωcm2).

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)

Research Program(s):

1. 135 - Fuel Cells (POF3-135) (POF3-135)
2. SOFC - Solid Oxide Fuel Cell (SOFC-20140602) (SOFC-20140602)

Appears in the scientific report 2020

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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