Table 2.

Fitting results of EIS for Cu at different thickness of TEL.

Thickness/μm	1000	400	200	100
Rs/Ω·cm2	47.5	31.6	66.4	104.3
CPE1/F·cm2	5.69E-05	6.85E-05	7.47E-05	10.0E-05
n1	0.692	0.720	0.719	0.745
Rf/Ω·cm2	77.2	73.6	51.4	152
CPE2/F·cm2	7.6E-04	8.8E-04	8.2E-04	7.0E-04
n2	0.512	0.482	0.466	0.545
Rct1/Ω·cm2	1428	1734	1643	1195
CPE3/F·cm2	4.25E-03	5.79E-03	6.41E-03	1.43E-03
n3	0.702	0.678	0.702	0.859
Rct2/Ω·cm2	2763	2322	1874	1453