Which mechanism limits hydrogen fuel cell performance below 0.6V at high current draw?

💡 Explanation

At high current draw, ohmic resistance in the fuel cell components (electrodes, electrolyte membrane, bipolar plates) results in significant voltage drop because of increased electron and ion flow, limiting performance. Therefore, ohmic resistance dominates, rather than catalyst poisoning, membrane drying, or electrode flooding which are significant at different operating conditions.

• Which outcome occurs when molecular packing overcomes attractive forces?
• Which mechanism explains high tensile strength polymers achieve?
• Which consequence results when extreme mass compresses spacetime near an object?
• Which mechanism limits the efficiency of a thermochemical energy storage system that utilizes reversible reactions?
• Which consequence results when an analyzer is perpendicular?
• Which outcome arises from a sustained *stimulated emission* within a fusion reactor plasma?