Ion Exchange Membranes for Electrolysis R&D

High-Performance Anion and Cation Membranes for Electrolysis

The ion exchange membrane is the heart of modern zero-gap electrolysis systems, governing ion transport, gas separation, and overall cell efficiency. For researchers developing next-generation water electrolyzers, selecting the right membrane chemistry and thickness is essential. We stock a curated range of premium Fumatech membranes designed specifically for electrolysis applications.

Our selection covers both anion exchange membranes (AEM) and cation exchange membranes (CEM), providing the foundational materials needed for alkaline, AEM, and PEM water electrolysis research, as well as specialized electrochemical synthesis.

Anion Exchange Membranes (AEM)

The fumasep FAAM series is designed specifically for alkaline water electrolysis and AEM electrolysis. These membranes selectively transport OH⁻ ions while blocking gas crossover. We offer both thin-film non-reinforced versions (like FAAM-20) for low-resistance fundamental studies, and heavy-duty polyketone-reinforced versions (like FAAM-PK-75) for high-pressure, long-term operation.

Cation Exchange Membranes (CEM)

For acidic environments and PEM water electrolysis, we supply robust cation exchange membranes. The F-10150-PTFE, for example, features PTFE reinforcement for exceptional mechanical durability and dimensional stability under demanding operating conditions.

Selection Support

All membranes are supplied with full technical datasheets and are ready to integrate our electrolysis flow cells. If you are unsure which membrane suits your specific electrolyte, temperature, or current density requirements, contact our technical team for expert guidance.

Precision Cut Membranes for Electrolysis

All membranes come in the following sizes:

• Standard: 5 cm x 12.5 cm sheets for custom cutting (see our membrane cutting tools)
• 20 cm x 30 cm sheet
• Pre-cut for Redox Flow Cells
  • Cut with alignment holes: For all our single cell test hardware.
  • Cut for X-Stack: Perfectly sized for our X-Stack electrolyser.
  • Cut with manifold for 3 compartment X-Cell

Precision Custom Membrane Cuts & Sizes

We can easily provide our membranes precision cut to other shapes and sizes. Just reach out to us and tell us what you need for your setup – or we can help you figure it out.

Frequently Asked Questions

Which AEM should I start with for alkaline electrolysis?

For fundamental studies and low-resistance research, start with fumasep FAAM-20 (thin, non-reinforced). For longer-duration or higher-pressure operation, move to the polyketone-reinforced FAAM-PK-75.

Do I need to condition the membrane before use?

Yes, most ion exchange membranes require conditioning — typically a soak in the target electrolyte and possibly ion exchange to convert to the desired counter-ion form. Datasheets include conditioning protocols.

Can I use these membranes with cells from other manufacturers?

In most cases yes, as long as the active area and gasket geometry match. Contact us if you need a non-standard size.

Explore Related Product Categories

• Electrodes for Electrolysis
• Gaskets for Electrolyzers
• Electrolysis Accessories
• Pumps