Potentiostatic Testing of Oxygen Reduction on Polymer Carbon Electrodes

Table 1

Calculated dependence of the rest potential (open-circuit potential) on the hydroxyl anion concentration, and the oxygen partial pressure for oxygen reduction for the PC electrodes in KOH electrolyte.

Electrode	𝑛	𝑚^(±0.1)	𝑝^(±0.1)
PCA; 𝐸^0𝑟 = 80 mV versus SHE	1	0.6	0.5
	2	1.3	0.9
	3	1.9	1.4
	4	2.6	1.9
PCB; 𝐸^0𝑟 = 130 mV versus SHE	1	0.5	0.2
	2	0.9	0.4
	3	1.4	0.5
	4	1.9	0.7

See (15); 𝐸_𝑟 is the rest potential, and 𝐸^0𝑟 is the standard rest potential; 𝑛 refers to the possible number of electrons transferred for the proposed equilibrium reaction.