Table 4.

Electrochemical parameters obtained by fitting the EIS data of uncoated SS and PSC/TMS-SiO₂ coating with their respective contact angles (CAs) at different immersion time in 3.5% NaCl.

Time (h)	Uncoated 316SS			PSC/TMS-SiO2 coating
	R s (Ωcm2)	C dl (F/cm2)	R ct/R p (kΩcm2)	R s (Ωcm2)	C c (F/cm2)	R c (kΩcm2)	C dl (F/cm2)	R ct (kΩcm2)	R p (kΩcm2)	CA (°)
1	23.71	1.78 × 10−4	30.95	60.62	4.21 × 10−5	78.49	1.06 × 10−4	139.37	217.86	152° ± 2.3°
24	22.88	1.79 × 10−4	27.46	66.68	9.07 × 10−5	68.87	1.17 × 10−4	129.32	198.19	149° ± 1.5°
48	23.47	1.81 × 10−4	27.21	65.18	9.37 × 10−5	67.24	1.39 × 10−4	117.23	184.47	146° ± 2.1°
72	20.29	1.83 × 10−4	26.40	65.38	9.82 × 10−5	66.30	1.59 × 10−4	116.19	182.49	142° ± 2.5°
96	21.35	1.85 × 10−4	23.94	60.17	9.89 × 10−5	64.85	1.61 × 10−4	115.39	180.24	137° ± 3.2°
120	20.84	1.89 × 10−4	23.11	63.81	9.92 × 10−5	63.98	2.41 × 10−4	111.60	175.58	129° ± 1.4°
144	21.11	1.91 × 10−4	22.58	64.44	9.94 × 10−5	63.74	2.50 × 10−4	99.51	163.25	125° ± 2.8°
168	21.75	1.93 × 10−4	19.96	60.03	1.08 × 10−4	62.45	2.81 × 10−4	98.72	161.17	115° ± 2.6°
192	20.73	1.99 × 10−4	19.82	62.22	1.10 × 10−4	61.10	2.90 × 10−4	92.59	153.69	105° ± 3.3°
216	21.76	2.14 × 10−4	17.41	64.36	1.20 × 10−4	59.23	6.36 × 10−4	86.21	145.44	101° ± 2.2°
240	21.22	7.71 × 10−4	17.61	63.58	1.29 × 10−4	55.75	9.81 × 10−4	77.81	133.56	98° ± 1.9°