Application - Brine Electrolysis
Nickel mesh in chlor-alkali membrane cells.
Chlorine, caustic soda, hydrogen — the chlor-alkali triangle. Largest installed base of industrial electrochemical cells on the planet. Saturated NaCl/NaOH at 85-95°C. Most metals dissolve in weeks. Nickel forms a NiO/Ni(OH)₂ passive film and keeps conducting. We supply anode mesh (woven, 30-60 mesh, Ni201), membrane support mesh (electropolished to prevent puncture), and cathode current collectors (knitted interlock for gas release). ASTM B456, ISO 9044, EN 10204 3.1 certs on every shipment.
85-95 C
Operating temp
25-30%
NaOH conc.
ASTM B456
Standard
Anode Mesh for Chlorine Evolution
Woven nickel mesh (30-60 mesh, Ni201 grade) as anode substrate in membrane cells. The anode reaction (2Cl- to Cl2 + 2e-) generates highly oxidative conditions at the electrode surface. Nickel forms a protective NiO/Ni(OH)2 surface film that resists chlorine attack while maintaining electrical conductivity through the underlying metal. Plain-Dutch weave recommended for uniform current distribution.
Membrane Support Mesh
Fine woven nickel mesh (40-60 mesh, 0.19-0.25 mm wire) positioned between the ion-exchange membrane and the electrode. The mesh must maintain precise spacing (typically 0.5-1.0 mm) across the entire membrane area to ensure uniform electrolyte flow and prevent membrane damage from electrode contact. Electropolished finish eliminates burrs that could puncture the membrane.
Cathode Current Collector
Knitted nickel mesh (850-1150 g/m2, interlock knit) as cathode current collector in the caustic compartment. The cathode reaction (2H2O + 2e- to H2 + 2OH-) produces hydrogen gas that must escape through the mesh structure. The high porosity (85-98%) of knitted mesh allows efficient gas release while maintaining electrical contact under cell compression.
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