Fig. 4: Direction of the current flow or electron transfer on the catalyst between component I and II occurs through three possible cases.
From: Theoretical framework for mixed-potential-driven catalysis
a Component I is anode and component II is cathode, i.e., the current flows from II to I; (b) Component I is cathode and component II is anode, i.e., the current flows from I to II; (c) The current flows within both components I and II but there is no current flows between I and II.
