Iridium Coated Titanium Felt

Iridium Coated Titanium Felt Specifications Company Advantages FAQ

Iridium Coated Titanium Felt consists of a Grade 1 or Grade 2 titanium fiber felt substrate with an iridium coating applied to its porous surface. The three-dimensional fiber network provides a large accessible surface area and continuous pathways for water, gas and electron transport.

Compared with uncoated titanium felt, the iridium coating helps reduce contact resistance caused by titanium surface passivation. It also improves electrical contact between the porous transport layer and catalyst layer while enhancing stability under acidic anodic conditions.

Iridium Coated Titanium Felt is primarily used as an anode-side porous transport layer (PTL), current-distribution component or porous electrode in PEM water electrolyzers and other electrochemical systems requiring corrosion resistance and oxygen evolution reaction performance.

Ruiyun can customize the thickness, pore structure, porosity, iridium loading, coated area and finished dimensions according to the electrolyzer design.

Applications of Iridium Coated Titanium Felt

Application	Function of Iridium Coated Titanium Felt
PEM water electrolyzers	Used as an anode-side porous transport layer
Hydrogen production systems	Supports water supply, oxygen removal and current transfer
Single-cell testing	Used for PTL, catalyst-layer and MEA evaluation
Electrolyzer stack development	Supports prototype and short-stack testing
OER research	Used as a porous electrode or catalyst support
Custom electrochemical systems	Suitable for selected CO₂ electrolysis and electrochemical research

Customization Options

Pore Size & Porosity: Adjustable to optimize gas diffusion and reaction efficiency
Iridium Loading: Customizable for specific electrochemical applications
Sheet Size & Shape: Custom cutting available based on project requirements

Advantages of Iridium Coated Titanium Felt

Helps reduce contact resistance caused by titanium surface passivation.
Provides continuous pathways for water and oxygen transport.
Supports electrical conduction between the catalyst layer and flow field.
Withstands acidic and high-potential anode-side conditions.
Provides mechanical support for the membrane electrode assembly.
Available with customized porosity, thickness and iridium loading.
Can be cut to match different active areas and cell geometries.

How to Select Iridium Coated Titanium Felt

Selection Factor	Recommendation
Thickness	Match the flow-field depth and stack assembly design
Pore size	Balance catalyst contact, water supply and oxygen release
Porosity	Higher porosity supports mass transfer but affects strength
Iridium loading	Select according to current density, coating function and service life
Compression	Confirm assembly pressure to prevent excessive pore collapse
Dimensions	Match the catalyst layer, sealing area and flow field
Coated area	Specify full, single-sided, double-sided or selective coating

Handling and Operating Precautions

Handle the material with clean gloves.
Avoid scratching or grinding the iridium-coated surface.
Do not fold or over-compress the titanium felt.
Keep the PTL, catalyst layer and flow field uniformly aligned.
Confirm compatibility with the electrolyte before use.
Evaluate fluoride-containing or other titanium-corrosive media carefully.
Use validated chemical or ultrasonic cleaning methods only.
Store in a clean, dry and sealed package.
Inspect the coating and electrical contact if cell voltage increases.

Why Source from Ruiyun?

Experience in titanium felt and porous metal material processing
Custom PTL production according to customer drawings
Support for laboratory samples, prototypes and volume orders
Control of thickness, dimensions, porosity and coated area
Custom cutting for different cell and stack configurations
Protective packaging for precision porous materials
Technical support for specification and production feasibility reviews

Specifications

Item	Available Options
Substrate	Grade 1 or Grade 2 titanium felt
Porosity	Approximately 70%, customizable
Pore size	10–100 μm
Thickness	0.2–2.0 mm
Density	0.3–0.8 g/cm³
Coating	High-purity iridium
Coating thickness	0.1–5.0 μm
Iridium loading	0.2–5 mg/cm²
Standard sizes	200 × 300, 500 × 500 and 1000 × 1000 mm
Supply form	Sheets, rolls or custom-cut components

Company Advantages

Robust Infrastructure

Hebei Ruiyun Wire Mesh Technology Co., Ltd. owns modern production equipment and advanced production processes. The company covers an area of 30,000 square meters and is equipped with over 180 fully automated production lines, including cutting machines, drawing machines, weaving machines, and welding equipment. With an annual production capacity of over 120,000 square meters, we efficiently meet the demands of large orders. The company has fixed assets of RMB 35 million, ensuring our leading position in the industry.

Frequently Asked Questions (FAQ)

Q:What grade of titanium do you use

The titanium we use has a purity of over 99.6%, ensuring high quality and excellent performance.

Q:Are you close to the port?

Yes, our company is advantageously located near Tianjin Port, one of the world's largest ports. This geographical advantage allows us to quickly and efficiently ship products to customers worldwide. Whether by sea or air, we can provide fast and reliable logistics services to ensure your products are delivered safely and on time.

Q:What is your delivery time?

Our delivery time is highly flexible and can be adjusted based on stock availability and order requirements. If the product you order is in stock, we typically ship within 2 days. For custom orders, the delivery time varies based on the complexity and quantity of the order, usually ranging from 7 to 30 days. We will make every effort to complete your order as quickly as possible and ensure timely delivery.

Q:Are you a manufacturer?

Yes, we are a professional manufacturer specializing in the production of foam nickel, nickel wire mesh, nickel felt, stainless steel wire mesh, and other metal mesh products. Our production facilities are equipped with world-class equipment and technology, strictly adhering to ISO standards to ensure that every product meets the highest quality requirements. We also have a dedicated R&D team committed to product innovation and technology improvement to meet the evolving market demands.

Q:What is the minimum order quantity?

Our minimum order quantity is very flexible, accommodating orders of all sizes. Whether you need small custom pieces starting from 200x300mm or large bulk orders, we can fulfill your needs. Our production system and inventory management effectively support efficient delivery for different orders.

Q:Can you provide custom sizes or shapes?

Absolutely! We support customization based on the specific needs of our customers. In addition to standard rectangular and square nickel wire mesh, we can customize various shapes, including round, oval, diamond, and other irregular shapes. We can also perform punching, cutting, and other special treatments according to your design requirements to ensure the product perfectly meets your application needs. We are also happy to provide samples for your evaluation to ensure your satisfaction with the final product.