• Porosity: ≥95% (80-110 Pores per Inch. average hole diameters about 0.25mm) • Extensibility: Lengthwise≥5%; Widthwise≥12% • Tensile Strength:Lengthwise≥1.25N/mm^2; Widthwise≥1.00N/mm^2 • Notice: Please notice that it is normal to observe NiO peaks in the nickel foam in XRD data. It is really difficult to avoid the oxidation of the nickel. • How to clean the Nickel Foam for Battery Cathode Substrate.
1. It can be removed the NiO by annealing in the hydrogen furnace.
2.Nickel foam (about 3.3 cm x 1 cm) was carefully cleanedwith the concentrated HCl solution (37 wt.%) in an ultrasound bath for 5 min in order to remove the surface oxide layer. And then deionized water and absolute ethanol was used for 5 min each to ensure the surface of the Ni foam was well cleaned.