⚡ Presets

Ideal

High-temp

Dry membrane

Mass-transport

Conditions

Temperature: 353 K H₂ pressure: 2.0 atm O₂ pressure: 2.0 atm

Cell parameters

Membrane R: 0.15 Ω·cm² i₀ (exchange): 1.0e-4 A/cm² i_L (limiting): 1.6 A/cm² Operating point i: 0.60 A/cm²

Stats

Cell voltage—

Current density—

Power density—

Efficiency—

Dominant loss—

Peak power—

Anode: H₂ → 2H⁺ + 2e⁻; cathode: ½O₂ + 2H⁺ + 2e⁻ → H₂O. The cell voltage is V = E_Nernst − η_act − iR − η_conc. Activation loss follows Tafel (RT/αF)·ln(i/i₀), ohmic loss is iR, and concentration loss −(RT/nF)·ln(1−i/i_L) collapses as i approaches the limiting current. Power density P = V·i peaks before i_L. Drag the operating-point slider along the curve.