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MMO Coated Titanium Rod Anodes
Freshwater • Brackish Water • Seawater • Soil • Carbonaceous Backfill

MMO Rod Anodes for ICCP Systems

Dimensionally stable MMO-coated titanium rod anodes engineered for reliable current output in cathodic protection systems, including freshwater, brackish water, seawater, soil, and carbonaceous backfill environments.

Available in multiple rod diameters, cable options, and coating loadings according to current density, design life, and project requirements.

MMO ROD ANODE ENGINEERING

Compact Solid Rod Anodes for Stable ICCP Current Output

MMO rod anodes are selected when a compact, mechanically stable anode form is required for cathodic protection systems. They are commonly reviewed for freshwater, brackish water, seawater, soil, and carbonaceous backfill environments where rod diameter, coated length, cable connection, current density, and design life must be matched to the CP system

Compared with tubular anodes, MMO rod anodes use a solid titanium rod substrate and are often preferred for compact installations, smaller protection zones, equipment integration, and custom connection designs.

Hele Titanium supports custom MMO rod anodes with project-specific diameter, length, coating loading, cable type, sealing method, packing, labels, and documentation.

Solid Titanium Rod Substrate

Provides a compact and mechanically stable base for MMO coating.

Custom Coated Length

Active length and coating loading can be reviewed according to current output and design life.

Reliable Cable Connection

Cable type, crimping, sealing, and heat shrink protection can be customized for project requirements.

Multi-Environment CP Support

Suitable for freshwater, brackish water, seawater, soil, and carbonaceous backfill ICCP applications.

Freshwater • Brackish Water • Seawater • Soil • Carbonaceous Backfill

What Is an MMO Rod Anode?

An MMO rod anode is a solid titanium rod coated with mixed metal oxide to provide stable electrochemical current output in impressed current cathodic protection systems. The titanium rod acts as a dimensionally stable substrate, while the MMO coating provides the active surface for current discharge.

MMO rod anodes are commonly reviewed for freshwater, brackish water, seawater, soil, and carbonaceous backfill environments. Their compact solid rod geometry makes them suitable for applications where a strong, simple, and easy-to-integrate anode form is required.

MMO rod anode connection structure
MMO rod anode connection structure

Key Points:

  • Solid titanium rod substrate
  • MMO-coated active surface
  • Compact cylindrical geometry
  • Cable connection and sealing protection
  • Suitable for freshwater, brackish water, seawater, soil, and carbonaceous backfill
  • Custom diameter, length, coating loading, and cable options available
Component / Feature What It Means Why It Matters
Titanium Rod Substrate A solid titanium rod is used as the base structure for the anode. Provides mechanical stability, corrosion resistance, and a reliable base for MMO coating.
MMO Coating Mixed metal oxide coating activates the titanium rod as an anode. Supports stable electrochemical current output in ICCP systems.
Compact Rod Geometry The solid rod form is simple, strong, and easy to integrate. Suitable for compact CP layouts, equipment protection, and custom installation designs.
Cable Connection The cable connects the anode to the CP power supply or system circuit. Cable type and size should match current capacity, environment, and installation requirements.
Copper Crimp Sleeve Creates the electrical connection between the cable conductor and titanium rod. A stable low-resistance connection helps maintain current transfer and system reliability.
Epoxy Resin Sealing Encapsulates the connection area to reduce moisture ingress and protect the joint. Sealing quality is critical in wet, buried, brackish water, and seawater environments.
Heat Shrink Protection Provides additional insulation and mechanical protection around the sealed connection. Helps protect the joint during handling, installation, and long-term operation.
Engineering Note

Cable connection and sealing design should be reviewed according to operating environment, current output, cable route, installation method, and design life target. For demanding environments, cable insulation, sealing length, connection protection, and testing requirements should be confirmed before production.

MMO Rod Anode Options We Supply

Different MMO rod anode configurations are used depending on current output, cell geometry, mounting method, connection design, and operating environment. Hele Titanium can support standard and custom MMO coated titanium rod anodes according to project requirements.

Standard MMO Rod Anode

Standard MMO Rod Anode

MMO coated titanium rod anode for compact current output in electrolysis, CP, and custom electrochemical systems.

Best For: Laboratory cells, pilot systems, water treatment equipment, small electrolysis cells, and general electrochemical applications.
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Threaded MMO Rod Anode

Threaded MMO Rod Anode

MMO rod anode with threaded end, nut, terminal, or custom mechanical connection for easy installation.

Best For: Electrochemical cells, equipment integration, replaceable anode assemblies, and compact mounting structures.
Cable-Connected MMO Rod Anode

Cable-Connected MMO Rod Anode

MMO coated titanium rod supplied with cable connection, sealing, strain relief, labels, or project-specific termination.

Best For: Cathodic protection systems, water treatment equipment, and ready-to-connect electrochemical assemblies.
Custom MMO Rod Anode Assembly

Custom MMO Rod Anode Assembly

Drawing-based MMO rod anode assemblies with custom diameter, length, coating area, connection, mounting structure, packing, and documentation.

Best For: OEM systems, pilot reactors, laboratory units, water treatment modules, and project-specific electrochemical equipment.

Where MMO Rod Anodes Are Commonly Used

MMO rod anodes are commonly used when a compact, solid, and easy-to-integrate anode form is required for impressed current cathodic protection systems. Their titanium rod substrate and MMO-coated active surface make them suitable for freshwater, brackish water, seawater, soil, and carbonaceous backfill environments.

Freshwater Cathodic Protection

Why It Fits:

MMO rod anodes can provide stable current output in freshwater systems where controlled current density and corrosion-resistant performance are required.

Key Review Factors:

Water resistivity, current density, rod diameter, coated length, cable sealing, and design life target.

Brackish Water CP Systems

Why It Fits:

The compact rod form can be reviewed for brackish water environments where chloride exposure and current demand are higher than freshwater applications.

Key Review Factors:

Chloride level, conductivity, coating loading, current output, cable insulation, sealing method, and service life.

Seawater Cathodic Protection

Why It Fits:

MMO rod anodes can operate in seawater CP systems when coating type, cable protection, and current output are properly selected.

Key Review Factors:

Seawater chemistry, current density, rod size, cable type, sealing protection, mounting method, and inspection access.

Soil & Carbonaceous Backfill Systems

Why It Fits:

MMO rod anodes can be installed in soil or carbonaceous backfill where a compact solid anode is suitable for distributed or localized current output.

Key Review Factors:

Soil resistivity, backfill condition, installation depth, rod spacing, cable routing, and CP system design.

Heat Exchangers & Process Vessels

Why It Fits:

The solid rod geometry supports integration into equipment where compact current output and controlled placement are required.

Key Review Factors:

Vessel material, electrolyte condition, mounting design, current output, connection method, and maintenance access.

Water Condenser Boxes & AC Chiller Units

Why It Fits:

MMO rod anodes can be reviewed for condenser boxes and chiller units where water-side corrosion protection is required.

Key Review Factors:

Water chemistry, flow condition, anode position, cable sealing, current demand, and operating temperature.

Custom Compact ICCP Layouts

Why It Fits:

Rod diameter, active length, cable type, and sealing method can be customized for non-standard CP layouts or equipment integration.

Key Review Factors:

Structure geometry, available space, operating environment, required current output, design life, and documentation needs.

Technical Specifications

MMO rod anodes are manufactured with titanium rod substrates and iridium-based mixed metal oxide coatings for impressed current cathodic protection systems. Standard rod diameters, coating loading, cable type, and design life can be reviewed according to operating environment, current density, and project requirements.

Basic Specifications

Item Specification / Options
Product Category MMO Rod Anode
Substrate Titanium rod
Material Standard ASTM B348 Grade 1 or Grade 2
Coating Type Iridium-based mixed metal oxide coating
Shape Solid rod
Standard Diameters 6.35 mm / 12.7 mm / 19 mm / 25 mm
Custom Sizes Available upon request
Applicable Environment Freshwater, brackish water, seawater, soil, carbonaceous backfill
Typical Applications Heat exchangers, process vessels, condenser boxes, AC chiller condenser units, and ICCP systems
Design Life Reference 20 years based on standard current output conditions
Custom Support Rod diameter, length, coating loading, cable type, cable size, sealing, packing, labels, and documentation

Maximum Current Density by Environment

Environment Maximum Current Density
Freshwater 100 A/m²
Brackish Water 300 A/m²
Seawater 600 A/m²

Standard Rod Current Output

Based on 1000 mm rod length and 20-year design life.

Rod Diameter Freshwater Output Brackish Water Output Seawater Output
6.35 mm 2 A 6 A 12 A
12.7 mm 4 A 12 A 24 A
19 mm 6 A 18 A 36 A
25 mm 8 A 24 A 45 A

Cable Options

Cable Type Typical Use
PVDF / HMWPE Demanding CP environments requiring stronger chemical and insulation performance
ECTFE / HMWPE High-performance corrosion-resistant cable option for harsh environments
XLPE / PVC General cable option for selected CP applications
HMWPE Common economical option for soil and groundbed applications

Available Cable Sizes

Cable Size Options
6 mm² / 10 mm² / 16 mm² / 25 mm² / 35 mm²
Other cable sizes available upon request

Engineering Notes

  • Current output should be reviewed according to water resistivity, electrolyte condition, coating loading, rod diameter, active length, and design life target.
  • Higher current density environments such as seawater generally allow higher current output than freshwater environments.
  • Coating loading can be increased or reduced according to required design life and current density.
  • Final cable type and cable size should be selected according to current capacity, installation environment, cable route, and sealing requirements.

Custom MMO Rod Anodes Built Around Your CP System or Equipment Layout

MMO rod anode design should be reviewed according to rod diameter, coated length, active surface area, current output, current density, operating environment, cable connection, sealing protection, mounting method, and design life target.

Rod Diameter & Length Review

Review rod size according to required current output, mechanical strength, installation space, and application environment.

Coated Length Design

Customize coated length and active surface area according to current output, current density, and protection requirement.

Current Density Review

Review current density together with rod diameter, active length, coating loading, and design life target.

Coating & Loading Review

Select MMO coating and coating loading according to freshwater, brackish water, seawater, soil, carbonaceous backfill, or other operating conditions.

Cable & Sealing Design

Customize cable type, cable size, crimp connection, epoxy sealing, heat shrink protection, and connection structure according to project requirements.

Documentation Support

Material certificates, coating records, dimensional inspection notes, labels, packing documents, and project files can be prepared when required.

Engineer inspecting MMO rod anode connection and coating quality

WHAT WE NEED FROM YOU

  • • Application or protected equipment
  • • Operating environment, such as freshwater, brackish water, seawater, soil, or carbonaceous backfill
  • • Required current output or current density
  • • Design life target
  • • Preferred rod diameter and length
  • • Required coated length or active surface area
  • • Cable type, cable size, and cable length requirement
  • • Mounting, suspension, insertion, or installation method
  • • Sealing, crimping, terminal, or connection requirement
  • • Drawing, sample photo, layout, or technical specification
  • • Quantity and delivery destination

Active Area, Coating and Current Density Must Be Reviewed Together

For MMO rod anodes, rod diameter and length are only part of the design. Active coated area, current density, electrolyte chemistry, reaction type, mounting direction, and connection method all affect the final recommendation.

Active Surface Area

Depends on rod diameter and coated length, and affects available current output.

Current Density

Should be reviewed according to reaction type, electrolyte, coating loading, and design life target.

Coating Selection

MMO coating should match the dominant reaction, chloride level, pH, temperature, and operating environment.

Mounting & Connection Reliability

Threaded ends, terminals, cable sealing, and electrical continuity are important for stable operation.

Quality Control for MMO Rod Anodes

MMO rod anode quality depends on titanium rod substrate condition, dimensional accuracy, surface preparation, coating application, coated length control, connection accuracy, visual condition, packing protection, and final documentation.

01

Titanium Rod Substrate Review

Titanium rod substrate is reviewed according to grade, diameter, length, straightness, surface condition, and project requirements.

02

Surface Preparation

Cleaning, roughening, activation, and pre-treatment are controlled before coating.

03

MMO Coating Application

Coating formulation, application cycles, drying, and thermal treatment are controlled according to project requirements.

04

Coated Length & Dimension Check

Rod diameter, total length, active coated length, thread, terminal area, labels, and connection details are reviewed according to order requirements.

05

Connection & Visual Review

Cable connection, threaded end, welded tab, terminal section, surface condition, coating coverage, and visual appearance are reviewed according to inspection scope.

06

Packing & Documentation

MTC, coating record, inspection notes, labels, packing list, and project-specific documents can be prepared when required.

Documentation Support

Available Documents May Include:

  • MTC
  • Coating record
  • Dimensional inspection record
  • Coated length record when required
  • Visual inspection notes
  • Cable / connection notes when required
  • Packing list
  • Product labels
  • Project-specific QC documents

Installation Considerations for MMO Rod Anodes

Proper installation helps MMO rod anodes deliver current output more effectively. Rod placement, active area exposure, mounting method, connection design, electrolyte contact, and mechanical protection should be reviewed before installation.

Installation Factor Why It Matters
Rod Placement Affects current distribution, reaction zone, and system performance.
Active Area Exposure The coated section should be positioned where current output is required.
Electrode Spacing Spacing between anode and cathode affects cell voltage, current distribution, and system behavior.
Mounting Method Threaded, inserted, suspended, fixture-mounted, or cable-connected installation should match equipment design.
Electrolyte / Environment Contact Electrolyte, water, soil, or other conductive media affects current transfer and coating selection.
Cable or Terminal Connection Electrical continuity and sealing quality affect long-term operation.
Mechanical Protection Helps reduce damage during handling, installation, operation, or maintenance.
Inspection Access Useful for future system review, cleaning, replacement, and maintenance planning.

Buyer Note: MMO rod anode installation should be reviewed together with the full electrochemical or CP system design. Share your layout, current requirement, electrolyte chemistry, and connection method for engineering review.

Compare MMO Rod Anodes with Other MMO Anode Forms

MMO rod anodes are best used when a compact solid cylindrical anode is required for electrochemical cells, pilot systems, water treatment equipment, or selected CP applications. Other MMO anode forms may be more suitable when the project requires tubular mechanical structure, flat localized surface, linear distributed output, or packaged groundbed installation.

Anode Form Best Used When Link
MMO Linear Anode Distributed current output is required along a long protected area. View MMO Linear Anode →
MMO Wire Anode Flexible embedded linear current output is needed. View MMO Wire Anode →
MMO Ribbon Anode Flat long-area current distribution is required. View MMO Ribbon Anode →
MMO Mesh Ribbon Anode Larger contact area or concrete embedment is needed. View MMO Mesh Ribbon →
MMO Tubular Anode A hollow cylindrical anode structure is required for soil, seawater, or tank CP systems. View MMO Tubular Anode →
MMO Canister Anode A packaged anode assembly with backfill is required for groundbed installation. View MMO Canister Anode →
MMO Disc Anode A compact flat localized active surface is required. View MMO Disc Anode →

MMO Rod Anode FAQ

What is an MMO rod anode?
An MMO rod anode is a solid titanium rod substrate coated with mixed metal oxide. It provides a compact, cylindrical active surface for current output in electrochemical systems and cathodic protection applications.
What is the difference between MMO rod anode and titanium rod?
A titanium rod is just the raw uncoated metal substrate. An MMO rod anode has been specially processed and coated with electrocatalytic mixed metal oxides, allowing it to function as an anode to output current without rapidly dissolving.
Where are MMO rod anodes commonly used?
They are commonly used in electrolysis cells, water treatment equipment, laboratory and pilot systems, custom industrial electrochemical equipment, and selected compact cathodic protection installations.
What is the difference between MMO rod anode and MMO tubular anode?
A rod anode uses a solid titanium rod substrate, making it ideal for smaller diameters, threaded ends, and compact cells. A tubular anode uses a hollow titanium tube, which is often preferred for larger diameters, string assemblies, and deep well CP groundbeds to save material weight.
What is the difference between MMO rod anode and MMO disc anode?
A rod anode provides a cylindrical active surface along its length. A disc anode provides a flat, circular active surface localized to one plane, typically flush-mounted against a wall or tank structure.
How do I choose rod diameter and coated length?
It depends on active area, required current output, current density limits, mechanical strength needed, and the available installation space in your cell or CP layout.
What affects current density for MMO rod anodes?
Current density limits depend on the electrolyte chemistry (e.g., seawater vs. freshwater vs. specific chemical bath), reaction type, coating formulation, operating temperature, and your target design life.
Can MMO rod anodes be threaded or cable-connected?
Yes, custom mechanical connections like threaded ends, nuts, welded tabs, or factory-sealed cable connections can be supported according to your project requirements.
Can MMO rod anodes be used for water treatment?
Yes, they are frequently used in water treatment equipment for electrochemical oxidation, electrochlorination, and disinfection, depending on water chemistry and cell design.
Can MMO rod anodes be used for laboratory or pilot electrochemical cells?
Absolutely. The compact solid rod geometry is very easy to integrate into test cells, beakers, and small pilot reactors for R&D projects.
What documents can be provided?
When required, we can provide MTC (Material Test Certificate) for the substrate, coating records, dimensional inspection notes, visual inspection notes, and packing lists.
What information is needed for a quote?
Please provide the application, operating environment/electrolyte, required current output, design life target, rod diameter and length, coated length, connection requirement, and quantity.

Get Your Custom MMO Rod Anode Recommendation

Tell us your application, electrolyte or operating environment, current output requirement, current density, design life target, rod diameter, coated length, mounting method, and connection design. Hele Titanium will help review the suitable MMO rod anode configuration for your project.

Custom MMO Coated Titanium Rod Anodes

Rod Diameter, Active Area & Current Density Review

Threaded, Cable & Terminal Connection Support

Factory-Direct Export Packing & Project Documentation

Direct Contact:

sales@heletitanium.com

Factory: Titanium Valley, Baoji City, Shaanxi Province, China

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