Industry Application

Hydrogen & PEM
Electrolysis

Titanium porous transport layers, gas diffusion components, and sintered filter elements for PEM and alkaline electrolyzers, fuel cells, and green hydrogen production infrastructure.

PEM Electrolyzer Alkaline Electrolyzer Fuel Cell PTL / GDL Green Hydrogen
70–80%Ti PTL porosity range
Grade 2Titanium standard
H₂SO₄Acid-stable
CustomThickness & pore size
Industry Overview

Titanium Porous Components for the Green Hydrogen Value Chain

PEM water electrolysis requires porous titanium components that can simultaneously conduct electrons, allow mass transport of water and gas, and withstand the strongly oxidising acidic environment of the oxygen evolution electrode — operating at 60–80°C in dilute sulfuric acid or deionised water.

Sintered titanium powder filter elements and titanium fiber felt sheets are the two primary materials used as porous transport layers (PTL) in PEM electrolyzers — on the anode side where the corrosion environment is most demanding. Grade 2 titanium's oxide passivation layer provides the necessary long-term stability.

FILTURE supplies PTL materials in sintered titanium fiber felt and woven mesh formats, alongside porous Ti discs and plates — with porosity control from 30% to 80% and thickness from 0.5 mm to 5 mm, to match your stack design specification.

Stack components are held to the tight dimensional tolerances required for cell assembly through our precision CNC machining process, with material certification available through our quality inspection program.

Ti Gr2Standard PTL material — oxide-stable in H₂SO₄
30–80%Porosity range achievable
0.3–5 mmPTL thickness range
CustomDie-cut to stack dimensions
Applications

Titanium Porous Materials Across the Electrolyzer Stack

PEM Anode Porous Transport Layer

Sintered Ti powder or Ti fiber felt as PTL on the oxygen evolution side — highest corrosion demand. Controlled porosity and thickness for uniform current distribution and water transport.

Ti Gr2 · 1–3 mm · 50–75% porosity

Fuel Cell Gas Diffusion Layer

Ti fiber felt as GDL in PEM fuel cells — providing gas transport, water management, and electrical conductivity between the catalyst layer and bipolar plate.

Ti Gr2 · 200–400 µm · Low contact resistance

PEM Water Inlet Filtration

Sintered Ti cartridge filters upstream of the electrolyzer stack remove particulates from the deionised water feed — preventing blockage of flow channels and catalyst layer damage.

0.5–5 µm · Ti · DI water compatible

Hydrogen Gas Purification

Sintered metal filter elements on the hydrogen product stream — removing liquid carry-over and particulates before compression, storage, or pipeline injection.

0.5–10 µm · H₂-compatible

Alkaline Electrolyzer Components

SS and Ni-alloy sintered porous diaphragm support components for alkaline water electrolysis — handling KOH electrolyte at elevated temperature.

SS/Ni · KOH-resistant · 60–90°C

Bipolar Plate Flow Field Substrates

Titanium perforated sheet and expanded metal used as current collector and flow field substrate materials in PEM stack bipolar plate assemblies.

Ti Gr1/Gr2 · Custom pattern · Cut to size
Recommended Products

Titanium Materials for PEM & Electrolyzer Applications

All titanium products supplied with material test reports. Custom dimensions and porosity grades available for stack-design integration.

Ti Sintered Powder Filter / PTL
Pure Titanium · Gr2

Ti Sintered Powder — PTL / Filter

Sintered Ti powder for both PTL applications and upstream feed filtration. Uniform pore structure, good corrosion resistance in relevant service environments, and availability in tubular and flat-plate formats make it a practical option for many hydrogen projects.

0.22–100 µmH₂SO₄-stablePEM-rated
View Details
Ti Fiber Felt for PEM
Ti Fiber Felt · Sintered

Ti Fiber Felt (PTL / GDL)

Sintered titanium fiber felt for anode PTL in PEM electrolyzers and GDL in fuel cells. Precise porosity and thickness control, high electrical conductivity, die-cut to your stack dimensions.

70–80% Porosity5–80 µmDie-cut available
View Details
SS and Ti sintered porous discs stacked
SS & Ti · Disc Format

SS & Ti Porous Discs

Circular sintered discs for in-stack gas distribution and flow equalization. Available in multiple diameters to match your cell active area specification.

Any DiameterCustom PorosityTi or SS
View Details
Why FILTURE

What Electrolyzer Engineers Tell Us

Stack-Dimension Flexibility

We cut Ti fiber felt and sintered plates to your stack cell dimensions, with sample iterations available for new designs before you commit to larger production volumes.

Porosity Control for Stack Design

PTL porosity affects water transport, gas removal, and contact resistance simultaneously. We support projects that require porosity and thickness control, with batch testing available according to the documentation level needed.

Material Certification for Scale-Up

As your project moves from prototype to commercial production, you need consistent supply with traceable material properties. We maintain lot records and provide MTRs with each shipment — supporting your IQ/OQ validation documentation requirements.

Other Industries

Beyond Hydrogen & PEM: Other Industries We Serve

Water Treatment

Water Treatment

Municipal · RO · Desalination
Pharma & Food

Pharma & Food

Sterile · GMP · Validation Support
Petrochemical

Petrochemical

High Temp · Acid · Corrosive
Semiconductor

Semiconductor

Ultra-pure · Cleanroom · N₂ gas
Client Feedback

What Hydrogen & Electrolysis Customers Say

"

Our PTL stack lifetime improved after switching to FILTURE titanium fiber felt. Sheet-to-sheet consistency also looked better in our internal comparisons than what we had seen from our previous source.

R&D Engineer PEM Electrolyzer Manufacturer · Denmark
"

We needed 0.5 mm thick Ti PTL with a specific pore gradient. The prototype stage moved quickly, and the follow-up production schedule was workable for our development timeline.

Engineering Lead Hydrogen Systems OEM · Germany

Develop Your PTL or Filter Specification With Us

Share your stack dimensions, porosity target, and application details. We'll send samples with full characterisation data — porosity, thickness, electrical resistance measurement.

Request PTL Samples View Ti Fiber Felt
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