2.0mm Titanium Expanded Mesh for Electrolyzer : Electrode Substrate, Current Collector and Gas Diffusion Layer
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China [CN] 2.0mm Titanium Expanded Mesh for Electrolyzer : Electrode Substrate, Current Collector and Gas Diffusion Layer
In modern electrolysis systems—including alkaline water electrolyzers (AWE), proton exchange membrane (PEM) electrolyzers, chlor-alkali cells, and seawater electrolysis anti :fouling units—the choice of electrode substrate and current collector directly influences energy efficiency, corrosion resistance, and long :term operational cost. Our 2.0mm titanium expanded mesh is purpose :engineered for these demanding electrochemical environments. Manufactured from high :purity Grade 1 (Gr1), this mesh combines exceptional resistance to acids, alkalis, and chlorides with excellent electrical conductivity. The diamond :shaped openings, formed by a precision expansion process, significantly reduce flow resistance and pressure drop across the electrode. This translates to lower pumping energy and improved gas :liquid mass transfer inside the electrolyzer cell.
Within an electrolyzer, the 2.0mm titanium expanded mesh can serve multiple critical functions: as a robust anode or cathode substrate for catalyst coatings, as a uniform current collector that distributes electrical current evenly across the electrode surface, or as a gas diffusion layer (GDL) that facilitates the release of hydrogen or oxygen bubbles. Unlike punched metal sheets or woven wire meshes, the expanded construction has no welded joints or loose strands, eliminating potential weak points under thermal cycling and mechanical stress. The 2.0mm thickness provides ample mechanical strength to withstand high differential pressures while remaining lightweight. Furthermore, the mesh surface can be customized with platinum plating (for PEM electrolyzer anodes), ruthenium :iridium oxide coatings (for chlorine evolution), or nickel/Raney nickel coatings (for alkaline hydrogen evolution).
Specifications:
Material: GR1 titanium
Mesh size: 3*6mm
Size: 100*100*2.0mm
Technique: Expanded
Aplications:
Alkaline Water Electrolyzer (AWE) : Used as anode/cathode substrate, can be coated with nickel, Raney nickel, or multi :element alloys. Uniform current distribution improves hydrogen production efficiency.
PEM Electrolyzer : Anode side: platinum :plated titanium expanded mesh recommended to prevent titanium oxidation and non :conductive layer formation under high potential. Cathode side: pure titanium or platinum :plated titanium mesh as gas diffusion layer (GDL).
Chlor :Alkali Industry (DSA Electrodes) : As substrate for dimensionally stable anodes (DSA) coated with Ru :Ir :Ti noble metal oxides. Resistant to chlorine evolution environment, long :term stable operation.
Seawater Electrolysis Anti :Fouling Systems : Titanium mesh resists seawater corrosion; used as an electrolytic anode to generate active chlorine for preventing marine biofouling.
Electroplating & Electrochemical Synthesis : Acts as an electrode mesh for uniform electric field distribution, suitable for copper, nickel, chromium plating, and organic electrosynthesis.
Why are the flatness and burrs of titanium mesh so important for the electrolyzer?
During the assembly of an electrolyzer, the flatness and edge burr condition of the titanium expanded mesh are often invisible but fatal quality issues.
Why is the flatness of the titanium mesh so important for the electrolyzer?
As an electrode substrate or current collector, titanium expanded mesh needs to be in close contact with the ion exchange membrane (PEM electrolyzer) or the diaphragm (alkaline electrolyzer). If the mesh has local waves, warpage, or distortion, the consequences include:
Uneven contact : The pressure distribution between the mesh and the membrane becomes non :uniform. Poor local contact increases electrical resistance, causes distortion of current density distribution, and may even create hot spots.
Risk of membrane damage : An uneven mesh surface exerts point pressure on the membrane during compression, which over time may accelerate mechanical fatigue or perforation of the membrane.
Assembly difficulties : When stacking multiple electrode layers, an uneven titanium mesh leads to overall thickness variation, causing seal failure or uneven bolt tightening.
We strictly control the expanding and flattening processes to ensure that each piece of titanium mesh is almost warp :free in the free state. Flattening is performed on a dedicated leveling machine to eliminate internal stresses generated during the expanding process, so that the mesh lies flat on a reference plane.
Why Burrs Are Invisible Killers for electrolyzer?
Tiny burrs may be generated at the sheared edges or at broken mesh junctions. These burrs can cause severe problems in an electrolyzer:
Puncturing the proton exchange membrane : For PEM electrolyzers, the membrane is extremely thin. Any sharp burr under compressive force can pierce the membrane, leading to mixing of hydrogen and oxygen and creating a safety hazard.
Scratching electrode coatings : Burrs may detach during assembly or under fluid flow, or they may directly scratch the catalyst coating on adjacent components, reducing electrolysis efficiency.
Contaminating the electrolyte : Detached titanium particles or burr fragments can enter the electrolyte circulation system, clogging flow channels or damaging the circulation pump.
We take multiple measures to ensure that the edges and mesh junctions are free of harmful burrs:
Mechanical deburring : The cut titanium mesh is brush :finished or tumbled to blunt sharp edges and remove small burrs.
Electropolishing (optional) : For demanding applications such as PEM electrolyzers, electropolishing is available. It not only removes burrs but also lowers surface roughness and improves corrosion resistance.
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