Morphology and Electrochemical Characterization of Electrodeposited Nanocrystalline Ni-Co Electrodes for Methanol Fuel Cells

Table 5

The EIS results of all electrodeposited nanocrystalline Ni-Co alloys tested in 1 M methanol + 0.5 M H₂SO₄.

Time (min)	(KΩ)	(Ω)	(μF/cm^2)
30 mA/cm^2
15	1.82	7.917	63.5	0.88
20	3.09	7.178	63.3	0.86
30	2.39	7.714	35.9	0.86
50 mA/cm^2
15	7.99	7.425	15.6	0.85
20	2.64	7.31	18.8	0.86
30	1.71	6.969	22.8	0.89
80 mA/cm^2
15	3.6	7.137	51.8	0.843
20	2.27	6.916	27.8	0.845
30	2.53	7.122	37.5	0.814
Stainless steel substrate
—	103	7.271	42. 9	0.89