What is a Coated Titanium Anode?

A coated titanium anode is a highly durable and efficient electrode widely used in modern electrochemical industries. By applying a specialized coating—often made from precious metal oxides such as ruthenium oxide, iridium oxide, or mixed metal oxides (MMO)—onto a pure titanium substrate, the anode combines the corrosion resistance of titanium with the high catalytic activity of the coating. This unique combination makes coated titanium anodes essential for processes like electroplating, water treatment, chlor-alkali production, and electrochemical oxidation.

With their long service life, high current efficiency, and environmental advantages, coated titanium anodes have become the preferred choice for industries seeking both economic and sustainable solutions.

What is a Coated Titanium Anode?

A coated titanium anode is a dimensionally stable electrode (DSA) designed to operate in aggressive chemical environments where traditional electrodes such as graphite or lead dioxide cannot survive. The titanium base provides excellent resistance to corrosion, while the surface coating ensures superior electro-catalytic properties.

Key Components of a Coated Titanium Anode

Titanium substrate: Provides structural strength, lightweight properties, and corrosion resistance.

Catalytic coating: Commonly includes iridium oxide (IrO₂), ruthenium oxide (RuO₂), platinum (Pt), or mixed metal oxides (MMO).

Bonding layer: Ensures firm adhesion between the titanium and coating, maintaining long-term stability.

Advantages of Coated Titanium Anode

1. Long Service Life

Thanks to its protective coating, a coated titanium anode resists wear and corrosion, lasting significantly longer than conventional electrodes.

2. High Current Efficiency

The catalytic coating promotes faster electrochemical reactions, reducing energy consumption and improving process efficiency.

3. Eco-Friendly and Safe

Unlike lead-based electrodes, coated titanium anodes do not release toxic substances, supporting environmentally friendly operations.

4. Dimensionally Stable

The electrode maintains consistent dimensions during operation, ensuring uniform current distribution and stable performance.

5. Customizable Coatings

Depending on the application, coatings can be optimized for chlorine evolution, oxygen evolution, or mixed reactions, enhancing industrial flexibility.

Applications of Coated Titanium Anode

1. Water Treatment and Electrolysis

Used in electrolytic water disinfection for swimming pools, drinking water, and wastewater treatment.

Effective for electrocoagulation and advanced oxidation processes (AOPs).

2. Chlor-Alkali Industry

Critical for chlorine generation and sodium hypochlorite production.

Provides efficient and stable chlorine evolution at high current densities.

3. Electroplating and Metal Finishing

Ensures uniform metal deposition in electroplating applications.

Replaces lead-based anodes to achieve high-purity plating results.

Cathodic Protection Systems

Used to protect pipelines, offshore structures, and storage tanks from corrosion.

Provides long-term performance with minimal maintenance.

4. Energy and Environmental Applications

Applied in hydrogen production through water electrolysis.

Supports electrochemical oxidation for degrading organic pollutants

Technical Parameters of Coated Titanium Anode

The performance of a coated titanium anode depends on specific technical parameters, which are tailored to meet customer requirements.

Parameter    Specification Range
Substrate material：Pure titanium (Gr1, Gr2)
Coating type    ：RuO₂, IrO₂, Pt, MMO
Coating thickness：2–20 µm
Current density：Up to 10,000 A/m²
Operating voltage：1.5 – 12 V
Service life：2–10 years (depending on application)
Why Industries Choose Coated Titanium Anodes

The global demand for coated titanium anodes is growing due to the increasing need for energy-efficient and sustainable electrochemical technologies. Companies in sectors such as chemicals, metallurgy, water treatment, and renewable energy rely on coated titanium anodes because they:

Reduce operational costs through extended service life.

Improve process efficiency with high catalytic activity.

Support environmental compliance by eliminating toxic electrode materials.

Offer customizable solutions for specialized applications.

Industry Terms Related to Coated Titanium Anode

Understanding the terminology associated with coated titanium anodes helps customers and engineers select the right product.

Mixed Metal Oxide (MMO)

A combination of metal oxides (e.g., RuO₂, IrO₂, TiO₂) that provides excellent catalytic properties and durability.

Dimensionally Stable Anode (DSA)

A class of anodes, including coated titanium anodes, that maintain consistent size and performance throughout their service life.

Chlorine Evolution Reaction (CER)

An electrochemical process where chlorine gas is generated at the anode surface, widely applied in the chlor-alkali industry.

Oxygen Evolution Reaction (OER)

An electrochemical process where oxygen is produced at the anode, critical in water treatment and electrolysis.

Choosing the Right Coated Titanium Anode

When selecting a coated titanium anode, several factors should be considered:

Type of electrolyte (chloride, sulfate, etc.).

Required reaction (chlorine evolution, oxygen evolution).

Current density and operating voltage.

Expected service life.

Customization needs (shape, size, and coating type).

Working with an experienced manufacturer ensures the electrode is tailored to your specific industrial requirements.

Future Trends of Coated Titanium Anodes

As industries move toward greener and more energy-efficient solutions, coated titanium anodes will play an even more critical role. Research is focusing on:

Developing next-generation coatings with enhanced catalytic activity.

Expanding applications in renewable energy storage and green hydrogen production.

Integrating coated titanium anodes into zero-emission water treatment systems.

These advancements will further strengthen their position as the electrode of choice for sustainable industrial processes.

Company Introduction

Baoji City ShenAo Metal Materials Co., Ltd. is a leading manufacturer specializing in coated titanium anodes and other non-ferrous metal materials. With years of expertise in titanium processing and electrochemical technologies, we provide tailored electrode solutions for global industries. Our products are trusted for their high quality, durability, and competitive pricing.

We offer:

Customized coated titanium anodes for different applications.

Strict quality control to ensure long service life and stable performance.

Technical support for optimal electrode design and application.

Contact Us

For more information about our coated titanium anode products or to request a quotation, please contact us:

📧 Email: zh@baojiti.com.cn

🌐 Website: www.shenaocladplate.com