Wire mesh’s high surface area, predeterminable geometry, and excellent permeability make it ideal for electrode materials. In alkaline electrolysis, nickel meshes (e.g. Mat. No. 2.4060 / 2.4066) are particularly suitable, offering conductivity and resistance to the basic environment (usually potassium hydroxide). Multi-layer mesh configurations can further enhance surface area and porosity. Specific thermal treatments enable the production of these multi-layer meshes.