Which risk increases when methanol fuel cell temperature drops below freezing?

💡 Explanation

Ice obstructs proton mobility; therefore, diminished ionic conduction across the polymer electrolyte membrane can occur because ice-crystal formation is the dominant mechanism rather than platinum changes or methanol diffusion because they aren't directly sensitive.

• Which efficiency limit occurs across heat engines using isothermal compression?
• Which outcome occurs when electrons encounter a semiconductor's energy barrier?
• Which mechanism causes gravitational time dilation in spacecraft?
• Which outcome reduces solar cell efficiency due to excited electrons?
• Which consequence results when insufficient dark matter generates unexpected lens curvature?
• Which outcome occurs when excess neutrons compromise nuclear binding?