TY  - JOUR
AU  - Udomsilp, D.
AU  - Thaler, F.
AU  - Menzler, N. H.
AU  - Bischof, C.
AU  - de Haart, L.G.J.
AU  - Opitz, A. K.
AU  - Guillon, O.
AU  - Bram, M.
TI  - Dual-Phase Cathodes for Metal-Supported Solid Oxide Fuel Cells: Processing, Performance, Durability
JO  - Journal of the Electrochemical Society
VL  - 166
IS  - 8
SN  - 1945-7111
CY  - Pennington, NJ
PB  - Electrochemical Soc.
M1  - FZJ-2019-02842
SP  - F506 - F510
PY  - 2019
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000466331500001
DO  - DOI:10.1149/2.0561908jes
UR  - https://juser.fz-juelich.de/record/862548
ER  -