Check the listing for details. 2 x Nickel Foam Electrode Button Battery Electrode Disc 200x100x2mm Adhesive. Condition: New. Listed at 16.33 USD. What is this? Nickel foam is a material in which nickel is processed into a foam sponge shape with a network structure. This material has excellent electrical conductivity and is one of the excellent electrode materials for nickel batteries and metal batteries.What will I get?Color:GreyLength: 200 mm/7.87 inchWidth: 100 mm/3.94 inchThickness: 2 mm/0.08 inchMaterial: Nickel Foam ElectrodeIn the package of: 2 Pcs x Nickel Foam ElectrodeAre there any advantages of the product?The porous foam board maintains the superior physical properties of nickel, while the new structure of the foam sponge brings it different additional properties and has a wider range of applications. For example, the porous structure has sound absorption properties and can be used to absorb noise.