Which mechanism fundamentally limits a fuel cell's power output?

💡 Explanation

The activation energy barrier limits fuel cell output because reactants require overcoming an initial energy input to start electrochemical reactions, therefore slowing kinetics rather than electrolyte conductivity or catalyst poisoning which are secondary factors.

• Which phenomenon causes decreased catalytic activity in zeolites with high aluminum content used in catalytic cracking?
• Which risk increases for quantum computers using entangled qubits in noisy thermal environments?
• Which risk increases when an aircraft flies through an area of supercooled large water droplets (SLD)?
• Which failure results when sodium chloride experiences hydrolytic cleavage?
• Which outcome occurs when a MRI machine's gradients fail?
• Which mechanism causes embrittlement of high-strength steel when welded underwater?