Figure 3
From: Characterizing nano-scale electrocatalysis during partial oxidation of methane
Oscillation of the electrochemical charge transfer rate constant at anode as a function of time.
(a) Rate constant oscillation was calculated from Zimag and simultaneously varying Zreal was also plotted. (b) Possible reactions occurring at anode include chemical reactions such as redox reactions, dissociative adsorption, diffusion of adsorbates toward 3PBs, partial oxidation of methane (POX) and electrochemical reactions that generate oxygen ion flux by which H2 and CO are consumed at 3PBs (i.e., interface of Ni (green), YSZ (grey) and gas), while nickel oxidation occurs at 2PBs. (c) Schematic illustration of redox procedures during the oscillation.
