Which mechanism enables a solid oxide fuel cell to produce electricity at elevated temperatures more efficiently?

A)Decreased activation energy of reactions

B)Increased electrolyte ion conductivity✓

C)Enhanced electrode surface catalysis

D)Reduced ohmic resistance in cell

💡 Explanation

At higher temperatures, the oxygen ion conductivity of the solid oxide electrolyte increases, enabling faster ion transport through the electrolyte because the added energy overcomes activation barriers. Therefore, increased ion conductivity results, rather than affecting activation energy, catalysis, or resistance directly, which are separate factors in the cell's operation.

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Which mechanism enables a solid oxide fuel cell to produce electricity at elevated temperatures more efficiently?

💡 Explanation

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