Table 2.

EEC parameters obtained from EIS diagrams using electrical equivalent circuits.

Cin.(10−3 mol L−1)		EOCP(V)	EEC	Rsol(Ω cm2)	CPE-Yo in(S sn cm−2)	nin	Rin(Ω cm2)	CPE-Yo ox(S sn cm−2)	nox	Rox(Ω cm2)	CPE-Yo dl(S sn cm−2)	ndl	Rct(Ω cm2)	EI (%)	X2
CCHA	2.5	−0.96	3	88 (4%)	1 10−5(4%)	0.5 (16%)	123 (1%)	1.7 10−5(7%)	0.63 (1.1%)	329 (0.38%)	1.3 10−5(1%)	0.89 (0.3%)	7,712 (0.2%)	92.2	4.2 10−5
	5	−0.95	3	121 (0.3%)	1.2 10−6(1%)	0.75	144 (1%)	6.5 10−6(1%)	0.67 (0.17%)	8,813 (1.6%)	1.4 10−5(1%)	0.89 (0.5%)	13,190 (1%)	97.1	2.6 10−5
	10	−0.92	3	141 (0.8%)	4 10−7(20%)	0.83 (2%)	127 (3%)	1.2 10−5(3.8%)	0.67 (0.3%)	8,063 (4.7%)	1.6 10−5(2.8%)	0.86 (0.8%)	17,224 (2.7%)	97.5	5.0 10−5
	15	−0.92	3	125 (0.5%)	2.8 10−7(5%)	0.9 (0.5%)	2,555 (9%)	7.7 10−6(7%)	0.5 (3%)	34,322 (31%)	1.5 10−5(2.8%)	0.99 (8%)	5,448 (31%)	98.5	1.8 10−4
CDCHA	*2.5	−0.96	2	99 (0.6%)	—	—	—	3.1 10−5(2%)	0.72 (1%)	4,200 (2%)	9.3 10−6(1%)	0.83 (0.1%)	3,809 (1.9%)	92.1	8.4 10−5
	5	−0.95	3	102 (0.7%)	4.3 10−7(12%)	0.83 (1%)	549 (7%)	4.3 10−6(12%)	0.62 (0.5%)	17,980 (1%)	1.3 10−5(4%)	0.95-	1,267 (1%)	96.8	6.2 10−5
	10	−0.94	3	133 (0.2%)	6.7 10−7(5%)	0.93 (0.4%)	1,702 (16%)	1.7 10−5(22%)	0.42 (5%)	50,052 (8.7%)	1.2 10−5(13%)	0.74 (6%)	13,884 (33%)	99.0	7.8 10−5
	15	−0.85	3	98 (0.1%)	9 10−7(1%)	0.87 (0.1%)	1,642 (3%)	1.2 10−5(1%)	0.5 (0.5%)	33,332 (2%)	1.1 10−4(3.8%)	0.82 (2%)	45,540 (4%)	99.2	1.0 10−5
CETA	2.5	−0.98	2	99 (0.5%)	—	—	—	4.2 10−7(4.2%)	0.89 (0.5%)	703 (1.2%)	4.0 10−6(2.8%)	0.87 (0.6%)	2,560 (0.6%)	80.5	5.0 10−4
	5	−0.93	2	101 (0.5%)	—	—	—	3.5 10−7(2.6%)	0.84 (0.3%)	1,417 (0.6%)	2.0 10−5(2.2%)	0.76 (0.8%)	4,380 (1.2%)	89.0	4.7 10−4
	10	−0.93	2	125 (0.5%)	—	—	—	9.2 10−8(3.2%)	0.96 (0.3%)	3,289 (1.9%)	1.1 10−6(3.8%)	0.81 (0.9%)	7,400 (1.1%)	94.1	1.2 10−4
	15	−0.92	2	121 (0.2%)	—	—	—	3.6 10−7(1.5%)	0.96 (0.2%)	8,648 (2.4%)	1.2 10−5(4.9%)	0.59 (3.3%)	13,134 (4.0%)	97.1	2.2 10−4
Cin.(10−3 mol L−1)		EOCP(V)	EEC	Rsol(Ω cm2)	CPE-Yo dl(S sn cm−2)	CPE-n dl	Rct(Ω cm2)	Ws-T (s cm−2)	Ws-P	Ws-R (Ω cm2)				EI (%)	X2
Substrate without inhibitor		−0.99	1	32 (0.2%)	1.3 10−4(1.0%)	0.84 (0.2%)	635 (0.1%)	36 (25%)	0.53 (2.0%)	2,101 (14%)	—	—	—	—	3.6 10−4

^*For this CDCHA concentration the fitting with EEC of Figure 10C produced high errors for individual parameters, suggesting that another EEC should be used and then the EEC of Figure 10B was used.