mmo titanium electrode
Corrosion resistant
Long lifespan
Dimensionally stable
High current efficiency
High-performance MMO titanium electrodes for stable industrial electrolysis
MMO titanium electrodes offer corrosion resistance, low oxygen evolution potential, and long service life, making them ideal for the electrochemical industry. Compared to traditional graphite or lead alloy electrodes, MMO titanium electrodes offer higher current efficiency, lower energy consumption, and more stable electrochemical performance.
Baoji Shenao Metal Materials Co., Ltd. is a professional manufacturer of MMO titanium electrodes, providing customized mixed metal oxide coated titanium electrodes for industries such as water treatment, electroplating, electrolysis, hydrogen production, cathodic protection, sodium hypochlorite preparation, and chemicals.
Our MMO titanium electrodes use a high-purity titanium substrate combined with a noble metal oxide coating, such as ruthenium-iridium, iridium-tantalum, platinum, and ruthenium-titanium systems. They maintain stable conductivity, low overpotential, and long service life even under harsh industrial conditions.
Choosing MMO titanium electrodes can reduce maintenance costs, improve electrolysis efficiency, and provide corrosion resistance and continuous operation.
What is an MMO titanium electrode?
An MMO titanium electrode is a titanium-based electrode coated with a mixed metal oxide. Titanium substrates possess high mechanical strength and corrosion resistance, while MMO coatings exhibit catalytic activity in electrochemical reactions.
The coatings contain the following noble metal oxides:
Ruthenium oxide (RuO2)
Iridium oxide (IrO2)
Tantalum oxide (Ta2O5)
Platinum coating (Pt)
Titanium oxide (TiO2)
Different coating systems are selected based on electrolyte composition, current density, pH value, temperature, and industrial application requirements.
MMO titanium electrodes maintain a stable geometry during long-term electrolytic operation and are widely considered size-stable anodes (DSA).
Working principle of MMO titanium electrodes
Electrochemical working principle
During electrolysis, the MMO titanium electrode acts as the anode. When current passes through the electrolyte, oxidation reactions occur on the surface of the MMO coating.
The mixed metal oxide catalytic layer can reduce the overpotential of oxygen evolution reaction (OER) or chlorine evolution reaction (CHER), improving current efficiency and reducing energy consumption.
Electrochemical reactions include:
Oxygen Evolution Reaction (OER)
In water treatment and hydrogen production systems:
2H₂O → O₂ + 4H⁺ + 4e⁻
Chlorine Evolution Reaction (CER)
In sodium hypochlorite generation or chlor-alkali applications:
2Cl⁻ → Cl₂ + 2e⁻
MMO coatings provide catalytic activity and protect the titanium substrate from corrosion.
MMO Coating Systems
Ruthenium-Iridium Coated Titanium Electrode
Ruthenium-iridium coated systems are used in chlorine evolution environments, such as:
Seawater Electrolysis
Sodium Hypochlorite Generators
Swimming Pool Disinfection
Electrochlorination Systems
Advantages include:
High chlorine evolution efficiency
Low battery voltage
Stable catalytic activity
Long service life
Iridium-Tantalum Coated Titanium Electrode
Iridium-tantalum coated MMO titanium electrodes are used for the oxygen evolution reaction.
Applications include:
Electroplating wastewater treatment
Hydrogen electrolysis
Electrocoagulation systems
Industrial wastewater treatment
Advantages include:
Strong acid resistance
High oxygen evolution performance
High current density tolerance
Long-term operational stability
Platinum-coated titanium electrodes
Platinum-coated titanium electrodes are used in electrochemical systems with high conductivity and stable catalytic performance. Application areas include:
Precious metal recovery
Medical disinfection systems
Laboratory electrolysis
Fine chemical production
Advantages of MMO Titanium Electrodes
Low Energy Consumption
MMO titanium electrodes exhibit low overpotential characteristics, reducing electrolysis voltage. Lower electrolytic cell voltage results in lower energy consumption during operation.
Corrosion Resistance
The titanium substrate combined with a mixed metal oxide coating provides corrosion resistance in acidic, alkaline, and chlorine-containing electrolytes.
Long Service Life
Compared to graphite and lead alloy electrodes, MMO titanium electrodes offer a longer service life and lower replacement frequency.
Stable Electrode Dimensions
Dimensionally stable anodes maintain consistent electrode geometry during electrolysis, ensuring stable current distribution and predictable performance.
High Current Efficiency
MMO titanium electrodes improve electrochemical conversion efficiency.
Custom Shapes and Sizes
MMO titanium electrodes can be customized in various shapes:
Plate Electrode
Mesh Electrode
Tubular Electrode
Rod Electrode
Wire Electrode
Disc Electrode
MMO Titanium Electrode Technical Parameters
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Parameter |
Specification |
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Titanium Grade |
Gr1 / Gr2 |
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Coating Type |
Ru-Ir / Ir-Ta / Pt |
|
Coating Thickness |
8–15 μm |
|
Current Density |
500–20000 A/m² |
|
Working Temperature |
≤ 85°C |
|
Electrolyte pH |
1–14 |
|
Titanium Thickness |
0.5–3 mm |
|
Shape Options |
Plate / Mesh / Tube / Rod |
|
Service Life |
1–10 Years |
|
Base Material Standard |
ASTM B265 |
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Applications of MMO Titanium Electrodes
Water Treatment Industry
MMO titanium electrodes are used in electrochemical water treatment systems to remove COD, ammonia nitrogen, heavy metals, and organic pollutants.
Application areas include:
Industrial wastewater treatment
Municipal wastewater treatment
Electro-oxidation systems
Electrocoagulation systems
Hydrogen production systems
In PEM water electrolysis and alkaline electrolysis systems, MMO titanium electrodes improve oxygen evolution efficiency and reduce energy loss during hydrogen production.
Sodium hypochlorite generators
Ruthenium-iridium coated titanium electrodes are widely used in sodium hypochlorite generation systems.
Application industries include:
Drinking water disinfection
Swimming pool disinfection
Hospital disinfection
Food processing disinfection
Electroplating Industry
MMO titanium electrodes provide stable current distribution and corrosion resistance in electroplating production lines.
Application areas include:
Copper plating
Nickel plating
Zinc plating
PCB electroplating
Cathode protection systems
MMO titanium electrodes with impressed current anodes are used for cathodic protection in the following areas:
Pipelines
Marine structures
Underground storage tanks
Offshore platforms
Chlor-alkali industry
Dimensionally stable MMO titanium electrodes improve chlorine production efficiency and reduce maintenance costs in chlor-alkali plants.
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Industry Application Cases
1. Electrochemical Wastewater Treatment Project
A chemical plant needed a stable electrode system to treat high-COD wastewater.
Solution:
Iridium-tantalum coated MMO titanium electrode
Mesh electrode structure
High oxygen evolution efficiency
Results:
Reduced COD removal costs
Improved oxidation efficiency
Longer electrode life compared to graphite electrodes
2. Seawater Electrolytic Chlorination System
A marine engineering company needed MMO titanium electrodes for seawater electrolysis.
Solution:
Ruthenium-iridium coated titanium anode
Customized tubular electrode
High chlorine evolution performance
Results:
Stable chlorine generation
Reduced maintenance frequency
Resistant to seawater corrosion
3. Hydrogen Electrolysis Unit
A hydrogen equipment manufacturer used MMO titanium electrodes in an industrial electrolyzer.
Solution:
High Current Density MMO Titanium Electrode
Iridium-based Oxygen Evolution Coating
Precision Titanium Substrate Machining
Results:
Low Energy Consumption
High Hydrogen Production Efficiency
Long-Term Stable Operation
Why Choose Our MMO Titanium Electrodes?
Professional Manufacturing Experience
Baoji Shenao Metal Materials Co., Ltd. focuses on the manufacturing of titanium electrodes and the research and development of electrochemical materials for industrial applications.
Customized OEM Production
We support the following customizations:
Dimensions
Coating System
Current Density
Electrode Structure
Connector Design
Strict Quality Control
Each MMO titanium electrode undergoes the following tests:
Coating Thickness Inspection
Surface Testing
Electrochemical Performance Testing
Adhesion Testing
Global Industrial Supply
Our MMO titanium electrodes are exported to many countries for use in industrial electrolysis projects and water treatment systems.
Our Factory
Our Patents and Honors
Frequently Asked Questions about MMO Titanium Electrodes
What is the lifespan of an MMO titanium electrode?
Lifespan depends on current density, electrolyte composition, temperature, and operating conditions. It ranges from 1 to 10 years.
Can MMO titanium electrodes be used in acidic solutions?
Yes. MMO titanium electrodes are highly resistant to corrosion in acidic, alkaline, and chloride-containing environments.
Which coating is best suited for water treatment?
Iridium-tantalum coating systems are used for oxygen evolution applications in electrochemical wastewater treatment.
Can sizes be customized?
Yes. We can provide customized sizes, shapes, and coating systems according to customer requirements.
Which industries use MMO titanium electrodes?
Industries include:
Water treatment
Hydrogen production
Electroplating
Electrochlorination
Cathode protection
Chlor-alkali processes
How do MMO titanium electrodes reduce energy consumption?
Mixed metal oxide coatings reduce electrochemical overpotential, lower operating voltage, and reduce power consumption.
MMO Titanium Electrode Quotation Inquiry
Looking for reliable MMO titanium electrodes for industrial electrolysis systems?
Please contact Baoji Shenao Metal Materials Co., Ltd. for:
Customized Electrode Design
Technical Support
OEM Manufacturing
Quick Quote
Industrial Application Solutions
Our engineering team can recommend the most suitable MMO titanium electrode coating system based on your electrolyte, current density, operating temperature, and application requirements.
Email: zh@baojiti.com.cn
WhatsApp: +86-13636825659
MMO Titanium Electrode Technology Knowledge
Technical Principle of MMO Titanium Electrodes
The working principle of MMO titanium electrodes is based on the electrochemical catalytic reaction occurring on the surface of a mixed metal oxide coating. The titanium substrate primarily serves as the conductive structural support, while the MMO coating provides the catalytic activity.
Traditional graphite electrodes suffer from rapid wear, dimensional instability, and high energy consumption. MMO titanium electrodes, with their stable oxide coating, maintain conductivity and catalytic efficiency over long-term operation.
The coating composition directly affects electrochemical performance. Ruthenium-based coatings are used for chlorine evolution reactions, while iridium-based coatings are suitable for oxygen evolution systems.
The coating preparation process typically includes:
Titanium substrate surface treatment
Noble metal precursor coating
Thermal decomposition sintering
Repeated coating cycles
Final activation treatment
A robustly bonded and durable catalytic oxide layer is formed on the titanium surface.
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