Methanol Fuel Cell Crossover Loss Calculator
Liquid fuel cell electrochemistry: Compute methanol crossover diffusion flux ($J_{cross}$), parasitic oxidation current density ($i_{cross}$), cathode mixed potential drop, and net fuel efficiency.
DMFC Membrane & Solution Parameters
Standard aqueous feed: 0.5–2.0 M
Nafion 117 ≈ 175 μm; 115 ≈ 127 μm
Transport & Diffusion Properties
Molecules MeOH per proton
Crossover & Efficiency Penalties
Parasitic Crossover Current:
--
mA/cm² (internal loss)
Fuel Utilization Efficiency:
--
η_fuel = i / (i + i_cross)
Crossover Flux:
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nmol/(cm²·s)
Mixed Pot Drop:
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Cathode ΔV (mV)
Net Cell Voltage:
--
Volts (estimated)
Flux Mechanism Partition
Fickian Concentration Diffusion:
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Proton Electro-osmotic Drag:
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