What Is Titanium-coated Ruthenium-iridium Anode for Chlor-alkali and How to Choose the Right One for Your Industry?
A Titanium-coated ruthenium-iridium anode for chlor-alkali is a high-performance insoluble electrode widely used in industrial brine electrolysis systems for producing chlorine gas (Cl₂), hydrogen (H₂), and caustic soda (NaOH). It is a key component in modern chlor-alkali production technologies, especially in membrane cell and diaphragm cell processes.
This anode is manufactured using high-purity titanium (Grade 1 or Grade 2) as the base material, coated with ruthenium-iridium mixed metal oxides (Ru+Ir MMO). The coating provides excellent catalytic activity for chlorine evolution, low overpotential, and strong resistance to highly corrosive chloride environments.
Compared with traditional graphite or lead-based anodes, Ru+Ir coated titanium electrodes offer higher current efficiency, lower energy consumption, and significantly longer service life. They also ensure more stable operation under high current density conditions, improving overall production efficiency and reducing maintenance costs.
When selecting a Titanium-coated ruthenium-iridium anode for chlor-alkali, key factors include brine purity, current density, electrolyzer type, operating temperature, and coating formulation. Proper selection ensures stable chlorine production, optimized energy usage, and long-term operational reliability in chemical manufacturing plants.
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Superior Corrosion Resistance、Ultra-Long Service Life、High Electrocatalytic Activity & Efficiency、Eco-Friendly、Low Maintenance





Customization Available (Size, Material, Coating, Shape, Lifespan & Installation)

Titanium-coated ruthenium-iridium anode for chlor-alkali can be fully customized according to industrial requirements:
At Hengyi Ti-Ni Import Export, we specialize in titanium-based electrochemical materials with strong engineering capability in anode system design.
HY Ti-Ni Import & Export is a professional supplier of Ru+Ir coated titanium electrode systems for Titanium-coated ruthenium-iridium anode for chlor-alkali applications. Located in Baoji, China, we benefit from a complete titanium industrial chain and advanced MMO coating technology.
Our manufacturing process includes strict titanium substrate selection, precision Ru+Ir coating application, thermal decomposition sintering, and full performance testing.
Key advantages:
We provide efficient and reliable chlor-alkali electrolysis solutions worldwide.
Selecting the right Titanium-coated ruthenium-iridium anode for chlor-alkali is essential for achieving high chlorine production efficiency, stable operation, and long service life in industrial electrolysis systems. Because chlor-alkali environments are highly corrosive and operate under high current density, careful technical evaluation is required before purchase.
First, confirm the electrolyzer type, such as membrane cell or diaphragm cell. Different systems require different electrode structures (mesh, plate, rod, or tubular) and spacing designs to ensure uniform current distribution and optimal electrochemical performance.
Second, evaluate brine quality, including NaCl concentration, impurity levels, and purification process. High-purity brine reduces side reactions and extends anode service life, while impure brine may require higher-grade Ru+Ir coating formulations.
Third, determine operating parameters such as current density, temperature, and voltage range. These directly influence coating selection, loading thickness, and energy efficiency performance.
Fourth, choose the appropriate anode structure based on installation space and maintenance requirements. Mesh anodes are widely used for membrane cells, while plate and tubular designs are preferred for customized industrial systems.
Finally, always work with a reliable manufacturer that provides Ru+Ir coating expertise, OEM/ODM support, and strict quality testing. Request technical drawings, coating specifications, and performance data to ensure compatibility and long-term stability in chlor-alkali production applications.
Purchase Guide
1. What is a Titanium-coated ruthenium-iridium anode for chlor-alkali? |

What Is Titanium-coated ruthenium-iridium anode for chlor-alkali?
A Titanium-coated ruthenium-iridium anode for chlor-alkali is an insoluble electrode used in brine electrolysis to produce chlorine, hydrogen, and sodium hydroxide. It consists of a titanium substrate coated with Ru+Ir mixed metal oxides, which provide excellent catalytic performance and corrosion resistance.
During operation, it enables efficient chlorine evolution with low energy consumption and stable industrial output. It is widely used in membrane cell and diaphragm cell chlor-alkali systems. Compared with traditional electrodes, it offers longer service life, higher efficiency, and improved operational stability in harsh chemical environments.
| Parameter | Specification |
|---|---|
| Product Name | Titanium-coated ruthenium-iridium anode |
| Substrate Material | ASTM B265 Gr1 / Gr2 Titanium |
| Coating Type | RuO₂ + IrO₂ MMO |
| Coating Loading | 6–20 g/m² |
| Current Density | 1000–5000 A/m² |
| Operating Voltage | 1.8–3.5 V |
| Chlorine Evolution Potential | ≤1.36 V |
| Brine Concentration | 300–320 g/L NaCl |
| Working Temperature | ≤95°C |
| Service Life | 5–10 Years |
| Type | Size Range | Application |
|---|---|---|
| Mesh Anode | Custom sheets | Membrane cells |
| Plate Anode | 100–3000 mm | Electrolyzers |
| Rod Anode | Ø6–50 mm | Special systems |
| Tubular Anode | Ø10–100 mm | Industrial cells |
| Type | Current Density Range | Stability |
|---|---|---|
| Mesh Anode | 1000–3000 A/m² | High |
| Plate Anode | 1500–4000 A/m² | Very High |
| Rod Anode | 1000–3500 A/m² | Stable |
| Tubular Anode | 1200–5000 A/m² | Stable |

Water Treatment Industry

Electroplating Industry

Chlor-Alkali Industry

Marine Engineering

Hydrogen Energy Industry

Mining and Metal Recovery
Selection Checklist
Proper selection ensures stable chlorine production, high efficiency, and long-term reliable industrial operation.

Q1. What is its main function?
It is used for chlorine production in chlor-alkali electrolysis.
Q2. What coating is used?
Ru+Ir mixed metal oxide coating.
Q3. How long does it last?
Typically 5–10 years depending on operating conditions.
Q4. Is it suitable for membrane cells?
Yes, it is widely used in membrane cell systems.
Q5. Can it be customized?
Yes, OEM/ODM customization is available.
Q6. Does it reduce energy consumption?
Yes, it improves current efficiency and lowers power usage.
Production site
State-of-the-art manufacturing for titanium anodes, precision coating and quality control.
Choseing titanium substrate
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Substrate Cutting
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Sandblasting
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Pickling
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Laser Cutting Configure Precious
Metal
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Coating
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Sintering
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Packaging
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Workshop
Precision machining and coating workshop for titanium anodes.
Titanium anode coating workshop
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Thermal decomposition sintering furnace workshop
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Titanium mesh anode production area
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Pickling/surface treatment process
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Pickling/surface treatment process
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Quality inspection workshop
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Worker operation photos
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Panoramic view of a clean production line
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Quality inspection
Rigorous testing for coating adhesion, electrochemical performance, and durability.
Dimension Inspection
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Coating Thickness Testing
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Coating Adhesion Testing
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Microstructure Analysis
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Conductivity Testing
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Corrosion Resistance Testing
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Bond Strength Testing
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Final Inspection & Packaging
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Packaging
Professional packaging to prevent damage and corrosion during transportation.
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Certifications
International certifications ensuring quality and environmental compliance.




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