The Rate Limiting Step (RLS) for the Oxygen Reduction Reaction at the Cathode of Polymer Electrolyte Membrane Fuel Cell
1-In 2010 Erlebacher and co-workers  discovered a new ionic liquid that has strong affinity to absorb oxygen and were used to improve the rate of ORR. 2- The enhancement of the rate of ORR after humidification of the cathodic region (humid air contains dissolved oxygen) while humidification of the anodic region (can humidify the membrane and increase its conductivity) has no effect on the rate of ORR [4-6]
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