Which mechanism causes reduced power output in solid oxide fuel cell that experiences prolonged operation at intermediate temperatures?

💡 Explanation

When a solid oxide fuel cell operates at intermediate temperatures, chromium evaporation from interconnects can occur because of high operating temperatures, depositing on the cathode and blocking active sites, resulting in cathode poisoning. Therefore cathode poisoning causes power reduction, rather than delamination, degradation, or starvation, which require different operating failures.

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