Type | Operating Temperature [˚C] [5] | Operating Pressure [Bar] [5] | Cathode Gas | Membrane and Electrolyte | Anode Gas |
Acidic (PEM) | 40 - 80 | <30 | H2 | Polymer Electrolyte Membrane (PEM) NafionÒ H+ | O2, H2O |
Alkali (AEL) | 65 - 220 | <30 | H2, H2O | KOH Electrolyte OH− | O2, H2O |
Solid Oxide (SOEC) | 600 - 1000 | <101 | H2, H2O | ZrO2, La0.8Sr0.2Ga0.8Mg0.2O3 O2− | O2 |