This title appears in the Scientific Report :
2017
Please use the identifier:
http://dx.doi.org/10.1149/2.0571713jes in citations.
Please use the identifier: http://hdl.handle.net/2128/15562 in citations.
High-Performance Metal-Supported Solid Oxide Fuel Cells by Advanced Cathode Processing
High-Performance Metal-Supported Solid Oxide Fuel Cells by Advanced Cathode Processing
La0.58Sr0.4Co0.2Fe0.8O3-δ (LSCF) cathodes on metal-supported solid oxide fuel cells (MSCs) were fabricated by a novel sinteringapproach and electrochemically tested in single-cell measurements. The sintering of cathodes on complete cells was performedunder argon atmosphere at 950◦C in order to preve...
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Personal Name(s): | Udomsilp, David (Corresponding author) |
---|---|
Roehrens, D. / Menzler, N. H. / Bischof, C. / de Haart, L.G.J. / Opitz, A. K. / Guillon, O. / Bram, M. | |
Contributing Institute: |
JARA-ENERGY; JARA-ENERGY Grundlagen der Elektrochemie; IEK-9 Werkstoffsynthese und Herstellungsverfahren; IEK-1 |
Published in: | Journal of the Electrochemical Society, 164 (2017) 13, S. F1375 - F1384 |
Imprint: |
Pennington, NJ
Electrochemical Soc.
2017
|
DOI: |
10.1149/2.0571713jes |
Document Type: |
Journal Article |
Research Program: |
Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) Solid Oxide Fuel Cell Fuel Cells |
Link: |
Restricted OpenAccess OpenAccess Restricted |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/15562 in citations.
La0.58Sr0.4Co0.2Fe0.8O3-δ (LSCF) cathodes on metal-supported solid oxide fuel cells (MSCs) were fabricated by a novel sinteringapproach and electrochemically tested in single-cell measurements. The sintering of cathodes on complete cells was performedunder argon atmosphere at 950◦C in order to prevent strong oxidation of the metallic support. During this sintering process, aphase decomposition of LSCF occurred, which was found to be reversible upon heating in ambient air. The observed performanceincrease of MSCs with cathodes sintered ex situ, compared to cells processed under standard conditions, revealed a beneficial effectof the increased sintering temperature on cell performance. At 750◦C and 0.7 V a current density of 0.96 A/cm2 was achieved.A stronger adherence of the cathodes sintered ex situ was observed after single-cell measurements. In additional experiments,La0.58Sr0.4CoO3-δ (LSC) was applied as an alternative cathode for MSCs. These cells were activated in situ at 850◦C due to thelower thermochemical stability of LSC and indicated potential for further improvement of the cell performance. The successfulelectrochemical characterization of the cells with LSCF cathodes sintered ex situ confirmed the applicability of the novel sinteringprocedure as well as the improved adherence achieved by the optimized processing. |