Table 2. NLLS Analyses of the Nyquist Plots Recorded by EIS before and after Each CV Cycle (Potential between 2.5 and 4.2 V vs Li⁺/Li) for the Li–O₂ Cells Using the Investigated GDLs as Cathodes^a.

GDL	cell condition	circuit	Re [Ω]	R1 [Ω]	χ2
22BB	OCV	Re(R1Q1)Qg	30.1 ± 0.2	865 ± 6	6 × 10–4
	after 1 CV cycle	Re(R1Q1)Qg	31.1 ± 0.1	135 ± 1	4 × 10–4
	after 2 CVcycles	Re(R1Q1)Qg	32.7 ± 0.1	97.5 ± 0.8	4 × 10–4
	after 3 CVcycles	Re(R1Q1)Qg	34.6 ± 0.2	69.6 ± 0.9	5 × 10–4
28BC	OCV	Re(R1Q1)Qg	40.5 ± 0.3	647 ± 6	9 × 10–4
	after 1 CV cycle	Re(R1Q1)Qg	41.3 ± 0.2	77.6 ± 0.6	4 × 10–4
	after 2 CVcycles	Re(R1Q1)Qg	41.1 ± 0.2	104 ± 1	4 × 10–4
	after 3 CV cycles	Re(R1Q1)Qg	45.1 ± 0.1	82.5 ± 0.7	3 × 10–4
36BB	OCV	Re(R1Q1)Qg	36.0 ± 0.2	1516 ± 92	6 × 10–4
	after 1 CV cycle	Re(R1Q1)Qg	36.2 ± 0.2	48.7 ± 0.6	5 × 10–4
	after 2 CV cycles	Re(R1Q1)Qg	37.2 ± 0.1	72.8 ± 0.6	3 × 10–4
	after 3 CV cycles	Re(R1Q1)Qg	38.1 ± 0.1	82.1 ± 0.6	2 × 10–4
39BB	OCV	Re(R1Q1)Qg	30.7 ± 0.3	530 ± 4	8 × 10–4
	after 1 CV cycle	Re(R1Q1)Qg	30.4 ± 0.2	69.1 ± 0.6	4 × 10–4
	after 2 CV cycles	Re(R1Q1)Qg	33.9 ± 0.1	66.3 ± 0.6	4 × 10–4
	after 3 CV cycles	Re(R1Q1)Qg	34.1 ± 0.1	55.1 ± 0.7	4 × 10–4

^aThe NLLS fitting was performed with Boukamp software, and only χ² values of the order of 10^–4 or lower were accepted.^37,38