Platinized titanium expanded mesh is an anodic material produced by depositing a platinum layer onto a commercially pure titanium substrate that has been mechanically expanded. In industrial electrochlorination systems, this material functions as the anode, generating active chlorine species such as sodium hypochlorite in situ through electrolysis of chloride-bearing solutions (e.g., seawater or brine). The expanded mesh structure provides high open area and fluid permeability, facilitating bubble release and electrolyte renewal, which reduces concentration polarization. The platinum coating delivers stable electrocatalytic activity, allowing the chlorine evolution reaction to proceed at a relatively low overpotential.

Under industrial electrochlorination operating conditions, platinized titanium expanded mesh must withstand prolonged exposure to high chloride concentrations, residual chlorine, and periodic polarity reversals that impose electrochemical stress. The chemical inertness of the platinum layer, combined with the mechanical strength of the titanium substrate, enables the anode to maintain dimensional stability and uniform catalytic performance despite fluctuations in current density and the presence of ionic impurities. Furthermore, the expanded mesh geometry reduces overall electrode weight and improves flow field uniformity within the electrolytic cell, providing predictable operational reliability for electrochlorination applications such as seawater cooling, ballast water treatment, and drinking water disinfection.

Product Specifications

Material: GR1 Tiatnium

Size: 100*100*1.0mm

Mesh Size: 3*6mm

Coating: Platinum

Coating thickness: 1 micron

Product Features

Current Density Adaptability

Within the typical operating range of an electrochlorination cell (500–2000 A/m²), platinized titanium expanded mesh sustains stable chlorine evolution efficiency. Cell voltage rises linearly with current density, and no significant nonlinear jump occurs.

Activity Retention at Low Salinity

When chloride concentration in the treated water drops to 500–2000 mg/L Cl⁻, platinized titanium expanded mesh retains sufficient chlorine evolution overpotential. This prevents excessive concentration polarization that would otherwise favor the competing oxygen evolution reaction.

Tolerance to Common Impurity Ions

In industrial recirculating water containing calcium, magnesium, iron, or other ions that may cause cathode scaling or anode fouling, the platinum layer on the mesh exhibits self‑cleaning electrolytic behavior. Short‑term impurity adhesion can be partially reversed by polarity switching or high‑current pulsing.

Activity Recovery Under Polarity Reversal

Periodic polarity reversal, applied to prevent scale formation, does not cause a cumulative rise in chlorine evolution overpotential. Following each reversal, the chlorine evolution activity of platinized titanium expanded mesh returns quickly to its pre‑reversal level without polarization degradation.

Platinized Titanium Mesh for Industrial Electrochlorination

Tolerance to Electrolyte pH Fluctuations

Chlorine hydrolysis and uneven current distribution can shift electrolyte pH between 2 and 11 during electrochlorination. Platinized titanium expanded mesh resists substrate corrosion under acidic conditions and does not form an insulating passive layer under alkaline conditions, maintaining stable chlorine evolution selectivity.

Catalytic Activity Retention Under Start‑Stop Cycles

Frequent start‑stop cycles due to production scheduling or maintenance do not degrade the performance of platinized titanium expanded mesh. After repeated power on‑off events, the initial chlorine evolution overpotential is preserved, with no measurable catalytic decay or cell voltage drift.

Products Applictaions

Coastal Power Plant Circulating Cooling Water Systems

In the once‑through cooling water circuit of coastal power plants, platinized titanium expanded mesh serves as an on‑site chlorine generation anode, producing sodium hypochlorite to control marine biofouling in condensers and pipelines.

Offshore Oil and Gas Platform Seawater Electrochlorination

Seawater lift and firewater systems on offshore platforms use platinized titanium expanded mesh anodes to electrolyze seawater, inhibiting the accumulation of barnacles, mussels, and other fouling organisms inside pipe walls.

Industrial Recirculating Cooling Water Biocidal Treatment

In industrial recirculating cooling water systems of petrochemical and steel plants, platinized titanium expanded mesh maintains an effective chlorine concentration via electrochlorination, suppressing excessive growth of bacteria and algae.

Aquaculture Water Treatment

For inlet water disinfection in seawater or brackish water aquaculture facilities, platinized titanium expanded mesh anodes electrolyze water to generate low‑level hypochlorous acid, controlling pathogenic microorganisms without stressing the cultured species.

Oilfield Water Injection System Microbiological Control

In secondary oil recovery water injection units, platinized titanium expanded mesh anodes electrolyze chloride‑bearing produced water or seawater, reducing the risk of pipeline corrosion caused by sulfate‑reducing bacteria and other harmful microorganisms.

Seawater Desalination Pretreatment

As a biofouling control measure at the intake of desalination plants, the electrochlorination system supported by platinized titanium expanded mesh anodes effectively reduces marine biofouling on upstream equipment of reverse osmosis membranes.