Which process limits maximum hydrogen fuel cell voltage under high current load?

💡 Explanation

When the current load increases, the oxygen supply at the cathode becomes depleted faster than it can be replenished by diffusion, leading to concentration polarization because of mass transport limitations thereby reducing cell voltage. Therefore cathode concentration polarization reduces voltage, rather than electrolyte resistance, membrane leakage, or anode polarization which present different effects.

• Which consequence results when a continuous stirred-tank reactor (CSTR) experiences unexpectedly slow fluid mixing given a constant catalyst input?
• Which phenomenon impedes the use of hydrogen as engine fuel?
• Which consequence results when a catalyst deactivates in a packed bed reactor?
• Which mechanism maintains protein structure despite thermal energy?
• Which outcome occurs when a binary azeotropic mixture undergoes fractional distillation at constant pressure?
• Which outcome results from increasing temperature reducing magnetization?