fig2
Figure 2. (A) (a) Ring current measured during ORR, (b) Mass transport corrected Tafel plots; (c) ORR polarization curves in O2 saturated electrolytes; 0.1 M NaOH, and 0.1 M HClO4. (B) Schematic illustration of the double-layer structure during ORR in acidic (left) and alkaline (right) conditions. Insets (a) and (b) illustrate the ISET and OSET processes. These figures are quoted with permission from Ramaswamy et al.[36].
