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← ScienceWhich outcome occurs when a platinum catalyst degrades in a fuel cell?
A)Reduced cell voltage generation.✓
B)Increased electrolyte temperature.
C)Decreased fuel flow rate.
D)Elevated product water purity,
💡 Explanation
Reduced cell voltage emerges because the degradation decreases the catalyst's effective surface area via poisoning. This suppresses the electro-catalytic reaction kinetics; therefore reduced voltage occurs rather than thermal or physical effects.
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