Platinized titanium anodes

Platinized Titanium Anodes (Pt/Ti Anodes) are dimensionally stable electrochemical electrodes designed for a wide range of industrial electrolysis applications, including electroplating, metal finishing, water treatment, chlor-alkali processes, sodium hypochlorite generation, chlorine dioxide generation, and electrochemical synthesis.

A platinized titanium anode consists of a titanium substrate coated with a controlled layer of platinum. This composite structure combines the mechanical strength, lightweight characteristics, and corrosion resistance of titanium with the high electrocatalytic activity and electrical conductivity of platinum.

Compared with solid platinum electrodes, Pt/Ti anodes significantly reduce the amount of platinum required while providing an efficient and durable electrode structure.

Key Advantages

High Electrocatalytic Activity

Platinum provides an active catalytic surface for a variety of anodic electrochemical reactions, including chlorine evolution and oxygen evolution under appropriate operating conditions.

Excellent Electrical Conductivity

The metallic titanium substrate and platinum coating provide an efficient conductive path through the electrode structure.

Corrosion Resistance

Titanium provides a corrosion-resistant substrate, while the platinum coating offers a stable catalytic surface for demanding electrochemical environments.

Long Service Life

A properly prepared and well-adhered platinum coating can provide stable electrode performance over extended operating periods when operated within the recommended electrical, chemical, and temperature conditions.

Reduced Platinum Consumption

The use of a thin platinum coating on a titanium substrate can substantially reduce precious-metal consumption compared with solid platinum electrodes.

Lightweight Electrode Structure

The titanium substrate provides a lower-density alternative to solid platinum and is suitable for large-area electrode assemblies.

Technical Specifications

Platinum Coating

Parameter	Specification
Coating Material	Platinum (Pt)
Typical Coating Thickness	0.5–25 μm
Coating Thickness	Customizable
Substrate	Titanium, typically TA1 / Gr1
Coating Area	Full or partial coating available

The required platinum coating thickness should be selected according to the electrolyte composition, current density, operating temperature, electrode geometry, and required service life.

Typical Operating Parameters

Parameter	Typical Range / Limit
Standard Current Density	≤ 2,000 A/m²
High-Current Applications	Up to approximately 10,000 A/m²*
Standard Operating Temperature	< 60°C
Maximum Operating Temperature	< 80°C*
Fluoride Content	Application dependent

* Actual operating limits depend on electrode design, coating specification, electrolyte composition, pH, temperature, current density, and other operating conditions. Application-specific evaluation is recommended for high-current or high-temperature systems.

Suitable Electrolytes

Pt/Ti anodes can be designed for a variety of aqueous electrolytes, particularly systems involving anodic oxidation reactions.

Typical applications include:

Chloride-containing electrolytes

Chlorine evolution systems

Oxygen evolution systems

Electroplating electrolytes

Electrochemical water treatment solutions

Chemical synthesis electrolytes

For electrolytes containing fluoride ions, the operating conditions should be evaluated carefully because fluoride can affect the titanium substrate and electrode service life, particularly under acidic conditions.

Coating Technology

The performance and service life of a platinized titanium anode depend heavily on substrate preparation and coating quality.

Our manufacturing process may include:

Titanium substrate preparation
The titanium substrate is manufactured and formed according to the required electrode dimensions and configuration.

Surface pretreatment
Mechanical and/or chemical surface treatment is performed to remove contaminants and prepare the titanium surface for coating.

Platinum coating
Platinum is deposited using a controlled coating or electroplating process according to the required coating specification.

Thermal treatment
Appropriate thermal treatment may be applied to stabilize the coating system and improve coating integrity.

Quality inspection
Finished electrodes are inspected for coating thickness, surface condition, dimensional accuracy, coating uniformity, and electrical continuity as required.

The coating process is controlled to achieve consistent platinum distribution and strong adhesion to the titanium substrate.

Titanium Anode Basket & Mesh Electrode Systems

Platinized titanium mesh can be incorporated into custom electrode assemblies and titanium anode basket systems.

Example: 4 + 3 Configuration

A typical configuration may consist of:

4 titanium mesh cathode panels

3 platinized titanium mesh anode panels

This type of electrode assembly can be customized according to tank dimensions, electrode spacing, required current, and connection configuration.

Typical applications include:

Electroplating tanks

Metal finishing systems

Electrochemical cleaning

Scale removal systems

Swimming pool descaling equipment

Uncoated titanium mesh can be used for suitable cathode applications, while platinized titanium mesh is used where a durable catalytic anode surface is required.

Electrode Configurations

Platinized titanium electrodes can be supplied in different forms according to the customer's equipment design:

Titanium mesh

Expanded titanium mesh

Titanium plate

Titanium strip

Titanium basket

Ring-shaped electrodes

Custom electrode assemblies

The following parameters can be customized:

Electrode dimensions

Titanium substrate thickness

Mesh specification

Platinum coating thickness

Coating area

Electrode shape

Connection method

Mounting configuration

Applications

Chlor-Alkali & Chemical Industry

Chlorine generation

Sodium hydroxide production systems

Sodium hypochlorite generators

Chlorine dioxide generation

Electrochemical oxidation systems

Electroplating & Metal Finishing

Pt/Ti anodes can be used in selected electroplating and metal-finishing processes, including:

Nickel plating

Chrome plating

Copper plating

Precious-metal plating

Electrochemical surface treatment

The appropriate anode coating and operating parameters depend on the specific plating chemistry and process requirements.

Water Treatment

Industrial wastewater treatment

Electrochemical oxidation

Disinfection systems

Swimming pool water treatment

Electrochemical cleaning systems

Scale removal equipment

Electrochemical Synthesis

Organic chemical synthesis

Specialty chemical production

Pharmaceutical intermediate synthesis

Electrochemical oxidation processes

Quality Control

To ensure consistent electrode performance, quality control may include:

Titanium substrate dimensional inspection

Surface preparation inspection

Platinum coating thickness measurement

X-ray fluorescence (XRF) analysis

Coating uniformity inspection

Surface condition inspection

Coating adhesion evaluation

Electrical continuity testing

Dimensional inspection

Inspection requirements and test documentation can be provided according to customer specifications.

Packaging

To protect the platinum coating during transportation, electrodes are carefully packaged to minimize impact, friction, and surface damage.

Inner Packaging:

Protective wrapping

Foam paper

Other customized protective materials

Outer Packaging:

Carton

Plywood case

Customized export packaging

Special packaging requirements are available for large or complex electrode assemblies.

Cost & Sustainability Advantages

Reduced Precious-Metal Consumption

The platinum is applied as a controlled coating rather than using solid platinum, significantly reducing the amount of precious metal required for the electrode.

Reusable Titanium Substrate

After the coating reaches the end of its service life, the titanium substrate may potentially be recoated or recycled depending on its physical condition and the application.

Lower Lifecycle Cost

The combination of a titanium substrate and platinum coating can provide a more economical electrode solution than solid platinum while maintaining the required electrochemical performance.

Customized Pt/Ti Anode Solutions

Changsheng Titanium manufactures platinized titanium anodes according to customer drawings, operating conditions, and application requirements.

For electrode selection and quotation, customers are encouraged to provide:

Electrolyte composition

Current or current density

Operating temperature

pH value

Electrode dimensions

Required electrode configuration

Anode/cathode spacing

Expected service life

Target electrochemical reaction

Based on these parameters, we can recommend an appropriate titanium substrate, platinum coating specification, electrode geometry, and connection design for your electrochemical system.

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