Cl⁻ effect on Ag ORR reduction step.

Solution composition	[Cl−]/M	α	n eff	Number of peaks
0.1 M KNO3	0.00	0.75 ± 0.03	1.64 ± 0.03	1
0.1 M NaClO4	0.00	0.69 ± 0.04	1.65 ± 0.02	1
0.1 M KCl	0.10	0.65 ± 0.02	1.47 ± 0.02	1
0.42 M KCl	0.42	0.66 ± 0.05	1.33 ± 0.15	1
0.42 M NaCl, 9.39 mM KCl, 54.6 mM MgCl2	0.54	0.70 ± 0.04	0.93 ± 0.04	2
0.54 M KCl	0.54	0.67 ± 0.02	1.07 ± 0.10	2