Experimental Current—Potential Curves for Porous Electrodes

Experimental Current-Potential Curves for Porous Electrodes 

A comprehensive study of the H2 oxidation on four different gas-diffusion electrodes with platinum as electrocatalyst in O.5MH2SO4 at temperatures between 0 and 60 °C was published by Austin and Almaula [12] recently. Gas mixtures corresponding to partial hydrogen pressures of 1.0, 0.5, and 0.1 atm respectively passed the gas side of the electrode at flow rates at least 30 times the maximum rate of the H2 oxidation. The H2 oxidation is an example of an electrode reaction with large Iq values of the heterogeneous steps on platinum (compare chapter VII). If the quantity U is plotted versus the ratio correction 

An extensive study of the effect of platinum deposit and porosity on the performance of flooded porous carbon electrodes for the methanol oxidation in alkaline media was carried out by Bloch, Prigent, and SuGiER [22]. The electrodes of different porosity were discs with a diameter of 3 cm and a thickness of 3 mm. The same amount of platinum 

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