2024
DOI: 10.1002/fuce.202400068
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Cobalt‐Free High‐Entropy Perovskite La0.2Pr0.2Nd0.2Sm0.2Sr0.2FeO3–δ Solid Oxide Cell Air Electrode With Enhanced Performance

Patrick Pretschuh,
Andreas Egger,
Priya Paulachan
et al.

Abstract: This study investigates the novel cobalt‐free high‐entropy perovskite, La0.2Pr0.2Nd0.2Sm0.2Sr0.2FeO3–δ (LPNSSF), as an air electrode material for solid oxide cells (SOCs). When testing a button cell with a single‐phase LPNSSF electrode, a current density of 0.55 A cm−2 is obtained at 0.7 V in fuel cell mode at 800°C. In order to mitigate the moderate electronic conductivity of LPNSSF, two approaches are explored. Incorporating a Co‐free highly conductive perovskite, LaNi0.6Fe0.4O3–δ (LNF), either as an LPNSSF–… Show more

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