Chlorine evolution titanium anode
Coating: Mixed Metal Oxide (MMO)
Coating Structure: Dense and highly conductive catalytic layer
Custom made: Plate, Mesh, Tube, and Customed
Expected Lifespan: Capable of consistent output across long-duration applications
Advantage:
High electrocatalytic activity
Strong corrosion resistance
Long service life
Dimensionally stable
Chlorine Evolution Titanium Anode
In the electrolysis of chloride-containing media, the chlorine evolution catalytic activity and selectivity of the anode directly determine active chlorine generation efficiency and operating energy consumption. Our Chlorine Evolution Titanium Anode at Baoji City ShenAo Metal Materials Co., Ltd. is designed specifically for efficient chlorine generation in brine, seawater, and chloride-containing wastewater environments. It uses Grade 1 or Grade 2 pure titanium as the substrate, with a ruthenium-iridium mixed metal oxide catalytic coating on the surface. The ruthenium component imparts a very low chlorine evolution overpotential to the coating, enabling efficient active chlorine generation at low cell voltage even under low chloride ion concentration conditions, while the introduction of iridium enhances the coating's structural stability during the accompanying oxygen evolution side reaction. This anode provides a reliable solution that balances high chlorine generation efficiency with long service life across applications including sodium hypochlorite generators, seawater electrolysis for chlorine generation, industrial circulating water disinfection, and chloride-containing wastewater treatment.
This product is for B2B Industrial Use Only. Operators should follow relevant chemical safety protocols and electrolysis operation standards.
Technical Specifications
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Substrate Material |
Grade 1/2 Pure Titanium |
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Coating Type |
Ruthenium-Iridium Mixed Metal Oxide (RuO₂-IrO₂), optimizable per chloride ion concentration and electrolyte system |
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Coating Thickness |
5–15 μm (adjusted based on current density and electrolyte composition) |
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Coating Loading |
10–150 g/m² (customized for rated current density) |
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Current Density Range |
100–3,000 A/m² (adjusted based on chloride ion concentration and chlorine generation target) |
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Operating Voltage Window |
0.5 V–2.0 V (typical chlorine evolution potential range) |
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Anode Shapes |
Plate, Mesh, Tube, Rod, Custom |
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Applicable Media |
Brine, seawater, chloride-containing wastewater, dilute hydrochloric acid solution |
Product Advantages
- Energy Efficiency Advantage from Low Chlorine Evolution Overpotential
The ruthenium-iridium coating exhibits a very low chlorine evolution overpotential in chloride-containing media, with cell voltage at the same current density significantly lower than that of pure iridium-coated anodes. For chlorine generation equipment operating continuously over long periods, lower cell voltage translates to reduced power consumption and heat generation, contributing to lower operating costs and slower electrolyzer temperature rise, making it particularly suitable for electrolysis conditions with ample chloride ion supply such as brine or seawater. - Efficient Chlorine Generation Under Low Chloride Ion Concentration Conditions
In some chloride-containing wastewaters and circulating waters, chloride ion concentration is only tens to hundreds of milligrams per liter, far below saturated brine levels. Our coating formulation is optimized for such chloride-lean waters, maintaining high chlorine evolution current efficiency under limited chloride ion availability to ensure the active chlorine concentration required for disinfection or oxidation is achieved. - Favorable Balance Between Chlorine and Oxygen Evolution Activity
The electrolysis of chloride-containing media is inevitably accompanied by the oxygen evolution side reaction. While pure ruthenium coatings offer high chlorine evolution activity, they consume relatively quickly in such environments. By introducing an iridium component to form a composite oxide structure, the coating effectively suppresses selective dissolution under normal operating conditions, achieving a longer service cycle while maintaining high chlorine evolution activity. - Multi-Form Customization for Different Cell Types
We can supply plate, expanded mesh, tubular, and rod anodes, compatible with filter-press cells, shell-and-tube reactors, flow-through disinfection modules, and open electrolytic tanks. Based on your equipment structure and installation space, anode profiles, conductive connection methods, and assembly solutions can be customized.
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Real-World Applications
- Chlor-Alkali and Halogen Chemical Production: Used in sodium hypochlorite generators, seawater electrolysis chlorine generation units, and brine electrolysis for chlorine production in the chlor-alkali industry, covering chlorine generation scenarios such as drinking water disinfection, swimming pool disinfection, and industrial-grade chlorine gas production.
- Water Treatment and Disinfection: Used for online electrolytic chlorination treatment of industrial circulating cooling water, chloride-containing industrial wastewater, and ship ballast water, achieving biocide and pollutant oxidative degradation through active chlorine generated at the anode.
- Hydrometallurgy and Metal Recovery: Used for the electrolytic extraction of metal ions from chloride-containing leach solutions, or for assisting metal electrowinning processes in chloride systems through anodic chlorine evolution, applicable to the hydrometallurgy of metals such as nickel, cobalt, and copper.
- Electroplating and Surface Treatment: Used as insoluble anodes in acidic chloride plating bath systems, or as auxiliary chlorine evolution electrodes on electroplating lines, providing stable operating potential and maintaining active chlorine concentration in the bath.
The ShenAo Advantage
18 A long time of Fabricating Excellence
Since 2008, we've specialized in valuable metal coated titanium anodes from our office in Baoji's "China Titanium Valley." Our develop bimetallic hazardous welding innovation and progressed coating forms provide items you can trust.
Customization for Your Correct Needs
Every generation line is diverse. We give custom fitted arrangements coordinating your particular current thickness necessities, electrolyte composition, and operational parameters. Whether you require little bunch testing or full-scale generation amounts, we convey on time.
Cost-Effective Lifecycle Management
When coating exhaustion happens, you do not dispose of the whole anode. Our proficient recoating benefit strips the ancient oxide layer, sandblasts the substrate, and reapplies new MMO coating. This expands resource life and decreases your add up to taken a toll of proprietorship considerably.
Frequently Asked Questions
Q: What is the core difference between chlorine evolution titanium anodes and standard iridium-based anodes?
A: The core difference lies in the chlorine evolution overpotential. Chlorine evolution titanium anodes use a ruthenium-iridium composite coating, where the ruthenium component offers significantly higher chlorine evolution catalytic activity than iridium, achieving the same chlorine output at lower cell voltage in chloride-containing media with a clear energy efficiency advantage. However, if your process is dominated by oxygen evolution (such as acidic water electrolysis), iridium-based anodes are more suitable. The key to selection lies in the chloride ion concentration in the electrolyte and the desired electrochemical reaction type.
Q: How is the ruthenium-to-iridium ratio in the coating determined?
A: It depends on the chloride ion concentration in the electrolyte and the proportion of the oxygen evolution side reaction. In scenarios with high chloride concentration and minimal oxygen evolution (such as saturated brine electrolysis), a higher ruthenium ratio can be used to pursue the lowest chlorine evolution overpotential. When chloride ion concentration is lower or the oxygen evolution proportion is higher (such as dilute brine or chloride-containing wastewater), the iridium content should be increased to enhance coating durability. You can provide your electrolyte composition and operating parameters, and our engineers will recommend a suitable ratio.
Q: Are chlorine evolution anodes suitable for environments containing fluoride ions?
A: This requires careful evaluation. Fluoride ions attack not only the titanium substrate but also the ruthenium-iridium coating itself. If the fluoride ion concentration in the electrolyte exceeds 10 ppm, we recommend consulting with us, as a special protective solution may be needed. It is important to inform us of fluoride and other impurity levels during the selection stage.
Q: How should anodes be handled when the coating reaches the end of its service life?
A: The titanium substrate remains stable in chloride-containing media. The old coating can be chemically stripped, and once the substrate passes inspection, it can be recoated to restore performance to new-anode levels. We offer a full-service process including incoming inspection of used anodes, coating stripping, substrate treatment, and recoating.
Contact Us
You need a partner who not only supplies products but also solves your challenges alongside you. Our team is ready to engage with your inquiries and provide a tailored solution. Share your specific needs or key requirements with us today, and let us help you efficiently transform your breakthroughs into commercial value.
Titanium Anode Manufacturer
Email: zh@baojiti.com.cn
WhatsApp: +86-15877696471 (updated)
Products: Titanium Anodes, MMO Titanium Anodes, DSA Coated Titanium Electrodes, Electrolysis Electrodes, Hydrogen Production Electrodes, Wastewater Treatment Titanium Anodes.
