Table 1 EIS parameters of symmetrical dummy cells with Pt and SeGnP electrodes.

R_s, serial resistance; R_ct, charge-transfer resistance; C_dl, double-layer capacitance; R_tm, transmission resistance; C_ad, capacitance due to the adsorption of I⁻/I₃⁻ on the graphitic basal plane; J₀, exchange current density.

CE	Electrolyte	R_s (ohm⋅cm²)	R_ct (ohm⋅cm²)	C_dl (μF cm²)	R_tm (ohm⋅cm²)	C_ad (μF cm²)	J₀ (mA cm⁻²)
Pt	Co(bpy)₃^2+/3+	3.12	1.85	8.88	—	—	13.9
SeGnPs	Co(bpy)₃^2+/3+	3.20	0.13	17.5	—	—	234
Pt	I⁻/I₃⁻	3.42	0.61	6.02	—	—	21.1
SeGnPs	I⁻/I₃⁻	2.92	0.23	133	0.17	12.4	32.1