Table 1.

The electrochemical parameters after fitting of all samples immersed in 3.5% NaCl solution for 1 and 120 h.

Sample	Time/h	Rs(Ω cm2)	Qc		Rcr(Ω cm2)	Qdl		Rct(Ω cm2)
			Y0(Ω−1 cm−2 sn)	n		Y0(Ω−1 cm−2 sn)	n
EP	1 h	0.01	6.766 × 10−8	0.8895	5.64 × 107
GO/EP	1 h	0.01	9.365 ×10−9	0.894	1.173 × 109
TiO2/EP	1 h	0.01	5.854 × 10−9	0.8639	4.939 × 109
TiO2−GO/EP	1 h	0.01	5.869 × 10−10	0.9014	1.501 × 1010
EP	120 h	0.01	2.702 × 10−9	0.9102	9.947 × 105	2.572 × 10−11	0.4752	1.098 × 107
GO/EP	120 h	0.01	3.119 × 10−9	0.9243	7.939 × 108	4.92 × 10−9	0.7169	5.988 × 108
TiO2/EP	120 h	0.01	9.607 × 10−9	0.9218	1.625 × 108	6.08 × 10−9	0.5517	5.44 × 108
TiO2−GO/EP	120 h	0.01094	6.24 × 10−10	0.8986	5.149 × 109