Oxide-coated titanium MMO anode

​​​​​​​Oxide-Coated Titanium MMO Anode

Across a wide range of electrochemical processes, the catalytic activity and durability of the anode are core factors determining process efficiency and long-term operating costs. Our Oxide-Coated Titanium MMO Anode at Baoji City ShenAo Metal Materials Co., Ltd. is a multi-purpose insoluble anode built on mixed metal oxide coating technology. It uses Grade 1 or Grade 2 pure titanium as the substrate, with a catalytic coating composed of multiple noble metal oxides on the surface. By adjusting the ratios of iridium, ruthenium, tantalum, tin, and other components in the coating, this anode can provide matched catalytic activity and stable service performance in various electrochemical environments involving chlorine evolution, oxygen evolution, or both. From chlor-alkali production and industrial wastewater treatment to electroplating and hydrometallurgy, the MMO anode provides a versatile electrode platform that balances performance and cost for your diverse electrochemical process needs.

This product is for B2B Industrial Use Only. Operators should follow relevant chemical safety protocols and electrolysis operation standards.

Technical Specifications

Why Choose Our Titanium Anodes?

• Flexible Coating Formulation Customization for Diverse Applications
  The core advantage of MMO coatings lies in their compositional adjustability. For processes dominated by chlorine evolution (such as chlor-alkali electrolysis and sodium hypochlorite production), high-ruthenium formulations can be selected for low chlorine evolution overpotential. For processes dominated by oxygen evolution (such as acidic water electrolysis and hard chrome plating), high-iridium formulations can be selected to enhance durability. For processes involving organics or complex electrolytes, components such as tantalum and tin can be introduced to optimize selectivity and stability. Simply provide your process conditions, and we will match the most suitable coating solution.
• Sound Metallurgical Bond Between Titanium Substrate and Coating
  The coating forms a dense oxide solid solution interface with the titanium substrate through a thermal decomposition process, achieving high bond strength that resists spalling or peeling during long-term electrolysis operation. This sound bonding ensures the anode's conductive stability and dimensional consistency throughout its service life, avoiding localized current concentration and substrate corrosion caused by coating detachment.
• Broad Media Compatibility and Stable Electrochemical Performance
  Whether in strongly acidic plating solutions, high-salinity chlor-alkali brine, or complex industrial wastewater, MMO coatings can achieve matched chemical stability through formulation adjustments. The coating maintains a low corrosion rate and stable overpotential under rated operating conditions, without significant activity decay due to moderate fluctuations in media composition, making it suitable for electrochemical processes requiring long-term stable operation.
• Multi-Form Anodes Compatible with Different Electrolyzer Configurations
  We can supply plate, expanded mesh, woven mesh, tubular, rod, and ribbon anodes, fully compatible with filter-press electrolyzers, shell-and-tube reactors, flow-through modules, and immersion electrolytic cells. Based on your cell dimensions, installation method, and electrical connection requirements, anode profiles, bus bar interfaces, and overall assembly solutions can be customized for convenient integration with existing production lines.

Real-World Applications

• Chlor-Alkali and Halogen Chemical Production: Used as the anode assembly in chlor-alkali electrolysis, sodium hypochlorite generators, and seawater electrolysis chlorine generation units, covering the electrolytic production of chlorine gas, caustic soda, and downstream halogen chemicals.
• Water Treatment and Disinfection: Used for the electrochemical oxidation treatment of industrial wastewater, landfill leachate, and chloride-containing organic wastewater, covering high-COD wastewater degradation, ammonia nitrogen removal, and the deep oxidation of refractory organic pollutants.
• Electroplating and Surface Treatment: Used as insoluble anodes in surface treatment processes such as chromium plating, zinc plating, nickel plating, precious metal plating, and anodizing, covering current supply and bath maintenance for decorative and functional electroplating lines.
• Hydrometallurgy and Metal Recovery: Used for the electrolytic extraction of non-ferrous metals such as copper, nickel, zinc, and cobalt, as well as the electrolytic recovery of heavy metal-containing wastewater, replacing traditional lead anodes to enhance cathode product purity.

The ShenAo Advantage

18 Years 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: How do I select the appropriate MMO coating formulation for my process?
A: Coating formulation selection depends on three core factors: the main anion type in the electrolyte (chloride-dominated or sulfate-dominated), the desired electrochemical reaction (chlorine evolution, oxygen evolution, or both), and the operating current density. For chloride systems dominated by chlorine evolution, ruthenium-iridium formulations are recommended. For acidic systems dominated by oxygen evolution, iridium-tantalum formulations are recommended. For systems with complex compositions or containing organics, components such as tin and antimony can be introduced for optimization. Once you provide your process conditions, we can recommend a matched coating solution.

Q: What is the expected service life of MMO anodes?
A: The service life of MMO anodes depends on the coating formulation, current density, electrolyte composition, and operating temperature. Under rated operating conditions, the annual coating consumption rate is typically in the milligram range. The service life of ruthenium-iridium coatings under chlorine evolution conditions can typically reach 8–15 years, while the life of iridium-tantalum coatings under oxygen evolution conditions depends on iridium loading and current density. A more specific life estimate can be provided once detailed process parameters are supplied.

Q: How is the precious metal loading in the coating determined?
A: Loading directly determines anode service life and cost. For applications with higher current density, stronger electrolyte corrosivity, and longer required continuous operation, a higher loading is recommended. For batch operations or scenarios where replacement is less disruptive, standard loading is sufficiently economical. We can recommend a suitable loading solution based on your process requirements and budget targets.

Q: How should anodes be handled when the coating reaches the end of its service life?
A: The titanium substrate remains stable in most electrolysis environments. 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, helping you reduce long-term electrode renewal costs.

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.