Figure 2: A) Influence of the position of the CE on ORR polarization curves in an O2 atmosphere for current densities of up to 2500 mA cm-2geo. B) Influence of the position of the CE on the maximum current in CV curves recorded in an oxygen atmosphere. C) Influence of the position of the CE on the solution resistance between RE and CE. All measurements were carried out on GDEs with a Pt loading of 100 µg cm.2 and a catalyst coated area of 0.5 cm2 in 2 M HClO4
