Scaling the Cell Current

Maximizing the space-time yield, and thereby minimizing the investment cost in cells, requires the cell current to be maximized. However, different strategies must be used to scale kinetically and mass transport-controlled reactions. 

Many electrolytic processes operate with much lower concentrations of reactants ( 1 mM up to a fraction of 1 M) when the maximum current is likely to be detamined by mass transport. The approaches are then based on  

With gaseous reactants, a high flux of reactant to the site of electron transfer is achieved using a gas diffusion electrode (GDE) originally, such electrodes were developed extensively for fuel cells but are now frequently incorporated into other technologies. 

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