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Chromium deposition and poisoning at double-perovskite type SmBaCo2O5+δ (SBCO) cathodes of solid oxide fuel cells (SOFCs) are studied. The electrochemical activity of SBCO cathodes for the O2 reduction reaction degrades quickly in the presence of a chromia-forming metallic interconnect, indicating that SBCO is not a Cr-tolerant and resistance cathode. The results indicate that the deposition of Cr...
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