Abstract
In this work, LaNi0.6Fe0.4O3 (LNF) powders have been synthesized by sol-gel methods and used to prepare a contacting paste. A testing setup, developed to test anode-supported cells with different contacting geometries, has been used to investigate the effect of LNF contacting paste between the cathode and the current collector. The cell performances were comparable to those measured using a state-of-the-art La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) contacting paste, however, showing better stability under electric load. Cell performances have been investigated by means of current-voltage curves. Electrochemical impedance spectroscopy has been used to distinguish the loss contribution within the investigated system and to measure its evolution over time. The performances evolution was confirmed by microstructural changes and migration of elements characterized post-experiment by means of scanning electron microscopy-energy dispersive X-ray and X-ray diffraction techniques.
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