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000862548 1001_ $$0P:(DE-Juel1)161337$$aUdomsilp, D.$$b0$$eCorresponding author
000862548 245__ $$aDual-Phase Cathodes for Metal-Supported Solid Oxide Fuel Cells: Processing, Performance, Durability
000862548 260__ $$aPennington, NJ$$bElectrochemical Soc.$$c2019
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000862548 520__ $$aCathode processing is one of the main challenges in the manufacturing of metal-supported solid oxide fuel cells (MSCs). Cathodesintering in ambient air is not applicable to MSCs, as oxidation of the metal substrate and the metallic Ni of the anode damagesthe cell. A recently developed ex situ sintering procedure for the LSCF cathode in an argon atmosphere was shown to significantlyimprove cathode adherence. However, the stability of the sintered cathode layer posed a challenge during storage in ambient air. In thepresent work, adapting the ex situ sintering approach to LSC/GDC dual-phase cathodes not only enabled the ex situ sintering processto be applied to LSC-based cathodes, but also resulted in the superior stability of the cathode after sintering. Despite the hygroscopicproperties of the partially decomposed perovskite, LSC/GDC dual-phase cathodes were shown to withstand more than 1 year ofstorage in ambient air without failure. Electrochemical single-cell measurements and post-test analysis confirmed the reversibilityof phase transformations and the electrochemical activity of such dual-phase cathodes. Current densities of 1.30 A cm−2 at 750°C,0.85 A cm−2 at 700°C, and 0.54 A cm−2 at 650°C were obtained at a cell voltage of 0.7 V.
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000862548 7001_ $$0P:(DE-Juel1)129636$$aMenzler, N. H.$$b2
000862548 7001_ $$0P:(DE-Juel1)176805$$aBischof, C.$$b3$$ufzj
000862548 7001_ $$0P:(DE-Juel1)129952$$ade Haart, L.G.J.$$b4$$ufzj
000862548 7001_ $$00000-0002-2567-1885$$aOpitz, A. K.$$b5
000862548 7001_ $$0P:(DE-Juel1)161591$$aGuillon, O.$$b6$$ufzj
000862548 7001_ $$0P:(DE-Juel1)129591$$aBram, M.$$b7$$ufzj
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