Which limit impacts the electrochemical reaction rate of a fuel cell?

💡 Explanation

Ion transport polarization affects the reaction rate, because limited ion mobility in the electrolyte slows reactions because the current cannot reach equilibrium instantly. Therefore, ion transport effects, rather than just catalyst area, fundamentally throttle the overall reaction rate.

• Which phenomenon occurs after the optical path difference?
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• Which phenomenon decreases the overall reaction rate in unimolecular gas-phase decomposition at elevated pressures?
• Which outcome occurs when rapidly compressing a sealed volume predominately containing methane?
• Which outcome results when the electron density increases beyond the Thomas-Fermi screening limit at semiconductor surface?
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