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Which outcome prematurely depletes a solid oxide fuel cell's electrolyte?

A)Strontium segregation exceeding solubility limits
B)Electrode delamination minimizes contact resistance
C)Excess methane increases fuel utilization
D)Oxygen vacancies cause electronic conductivity

💡 Explanation

Strontium segregation causes electrolyte degradation because equilibrium is disturbed as strontium oxide precipitates at grain boundaries. The *Soret effect* drives this diffusion; therefore the electrolyte degrades rather than enhanced conductivity from oxygen vacancies at lower temperatures which is less impactful.

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