This title appears in the Scientific Report :
2019
Please use the identifier:
http://hdl.handle.net/2128/22151 in citations.
Please use the identifier: http://dx.doi.org/10.1149/2.0561908jes in citations.
Dual-Phase Cathodes for Metal-Supported Solid Oxide Fuel Cells: Processing, Performance, Durability
Dual-Phase Cathodes for Metal-Supported Solid Oxide Fuel Cells: Processing, Performance, Durability
Cathode processing is one of the main challenges in the manufacturing of metal-supported solid oxide fuel cells (MSCs). Cathodesintering in ambient air is not applicable to MSCs, as oxidation of the metal substrate and the metallic Ni of the anode damagesthe cell. A recently developed ex situ sinter...
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Personal Name(s): | Udomsilp, D. (Corresponding author) |
---|---|
Thaler, F. / 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, 166 (2019) 8, S. F506 - F510 |
Imprint: |
Pennington, NJ
Electrochemical Soc.
2019
|
DOI: |
10.1149/2.0561908jes |
Document Type: |
Journal Article |
Research Program: |
Solid Oxide Fuel Cell Fuel Cells |
Link: |
OpenAccess OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1149/2.0561908jes in citations.
Cathode processing is one of the main challenges in the manufacturing of metal-supported solid oxide fuel cells (MSCs). Cathodesintering in ambient air is not applicable to MSCs, as oxidation of the metal substrate and the metallic Ni of the anode damagesthe cell. A recently developed ex situ sintering procedure for the LSCF cathode in an argon atmosphere was shown to significantlyimprove cathode adherence. However, the stability of the sintered cathode layer posed a challenge during storage in ambient air. In thepresent work, adapting the ex situ sintering approach to LSC/GDC dual-phase cathodes not only enabled the ex situ sintering processto be applied to LSC-based cathodes, but also resulted in the superior stability of the cathode after sintering. Despite the hygroscopicproperties of the partially decomposed perovskite, LSC/GDC dual-phase cathodes were shown to withstand more than 1 year ofstorage in ambient air without failure. Electrochemical single-cell measurements and post-test analysis confirmed the reversibilityof phase transformations and the electrochemical activity of such dual-phase cathodes. Current densities of 1.30 A cm−2 at 750°C,0.85 A cm−2 at 700°C, and 0.54 A cm−2 at 650°C were obtained at a cell voltage of 0.7 V. |