Ion exchange materials

Membranes, Polymers & Ionomers

Proton and Anion exchange

Ion Exchange Membranes & Polymers

Ion exchange membranes and polymers enable the development of next-generation environmental technologies. These materials have a hydrocarbon backbone, which enables performance and life cycle improvements across the industry in fuel cells and hydrogen electrolysis, while making them far less impactful on the environment than common fluorinated materials. By using advanced stabilization techniques, they are able to compete with the most robust of alternatives.

Hydrocarbon membranes are significantly tougher than competitive products leading to a longer service life and reduced lifetime cost. Unlike their proton exchange counterparts, alkaline based anion exchange membrane systems can operate without the use of precious metals such as platinum and iridium, making them way more cost effective and environmentally friendly. Caplinq is proud to present the ONLY High performance non-fluorinated material in the market.

Compare Products
8 products
  • PEMION+™ - PF1-HL8-15
    Catalog Product

    PEMION - PF1-HLF8-15

    • Reinforced PFSA
    • 15 micron
    • Broad chemical stability
    • 4 weeks
  • AEMION+™ - AF2-HLE9-15-X
    Catalog Product

    AEMION+™ - AF2-CLF8-15

    • Reinforced
    • 15 micron
    • Broad chemical stability
    • 4 weeks
  • Catalog Product

    AEMION+™ - AF2-CLF8-50

    • Higher TP conductivity
    • 50 micron
    • Harder material
    • 4 weeks
  • AEMION+™ - AF2-HWP7-75-X
    Catalog Product

    AEMION+™ - AF2-HWP8-75

    • Woven Polyolefin reinforced
    • 75 micron
    • Total chemical stability
    • 4 weeks
  • AEMION™ - AF1-HNN5-50-X
    Catalog Product

    AEMION+™ - AF3-HWK9-75

    • PEEK reinforcement
    • 85 micron
    • High conductivity
    • 4 weeks
  • PEMION™ - PP1-HNN8-00-X
    Catalog Product

    PEMION+™ - PP1-HNN8-00

    • High conductivity binder and coating material
    • High concentration of functional groups
    • Chemical and oxidative stability
    • 4 weeks
  • AEMION+™ - AP2-HNN8-00-X
    Catalog Product

    AEMION+™ - AP2-HNN8-00

    • Enabling precious metal free systems
    • High conductivity
    • Catalyst layer ionomer
    • 4 weeks
  • AEMION+™ - AP3-HNN9-00
    Catalog Product

    AEMION+™ - AP3-HNN9-00

    • Enabling precious metal free systems
    • High conductivity
    • Catalyst layer ionomer
    • 4 weeks
Compare Products
8 products

Product Selector Guide

Anion Exchange Membranes & Polymers
Product Thickness (um) Area Resistance (mΩ*cm2)

Hydrogen crossover current (mA/cm2)

Tensile strength (MPa) Elongation (%) Water uptake (%) Max process temp (°C) Reinforced
AF2-CLF8-15 15 - - 65 - 95 50 - 70 <30 150 Fluorinated NW
AF2-CLF8-50 50 - - 35 - 55 55 - 85 30 150 Fluorinated NW
AF2-HWP8-75 75 <220 <4.2 >40  40 <45 105 Woven PO
AF3-HWK9-75 85 - - >53 21 12 - PEEK
PF1-HLF8-15 15 < 42.5 < 2.0 > 40 > 30 95 - 140 > 300 PFSA

Energy Storage Anion Exchange Polymers
Product Type IEC (meq/g) Conductivity (mS/cm) Water uptake OH- % Density (g/cm3) Solubility
AP2-HNN8-00 Anion 2.3 - 2.6 8 - 11 95 - 100 - -
AP3-HNN9-00 Anion - - - - -
PP1-HNN8-00 Proton 2.8 - 3.1 - - 1.2 Alcohols/Water
  • IEC in the hydroxide (OH-) counter-ion form.
  • Approximate swelling properties when cast into membrane form at 25 - 50 μm


These are prototype materials only intended to be used for early development activities and not intended for production items. Product information is to be used as a guide only, subject to change at any time.

Frequently Asked Questions

What is an ION Exchange material?

Ion Exchange Polymers (Ionomers)

ION Exchange polymers are at the core of all electrochemical technologies. They are being used as a coating/binder in the manufacturing of electrodes that are required for electrochemical systems

They allow rapid access to reactive sites, improving the application's efficiency, rate and capacity. Anion exchange polymers in particular combine the benefits of liquid alkaline and PEM systems while improving on almost every single aspect when it comes to Electrolysis. They have a very low H2 crossover, they don't require precious metals or titanium and they have a very high volumetric efficiency.

Ion Exchange Membranes

ION Exchange membranes are being used as a chemical barrier for efficient energy conversion systems.

These materials selectively filter positive or negative ions, including acid and base. The most popular membranes right now are the Proton exchange membranes but the market is shifting towards cheaper, more efficient and enviromentally friendly solutions. Anion exchange membranes are the next best thing due to their cost efficiency and they are bound to completely shake the energy market in the following years.

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Durable, High Performance Anion Exchange

Aemion™ anion exchange membranes are the most durable and high-performance anion exchange products on the market. They are stable in both highly basic and strongly acidic environments, providing a marked improvement in product life cycle, even in the harshest operating conditions. This unique stability unlocks a broad range of applications, from fuel cells, chemical generation, recovery and long-life energy storage to electrolysis and hydrogen production.

These membranes are based on the breakthrough discovery that weak sites in polymer structures are the root cause of AEM instability, and they can be effectively protected to prevent alkaline and oxidizing species from breaking down the polymers. The resulting hydrocarbon backbone provides a platform that enables simultaneous performance and life cycle improvements across the industry in energy and water, while reducing your product’s environmental impact.



Chemically and oxidatively stable across a range of operating conditions. A product that provides strong alkaline functionality (>2M @ 60ºc) in addition to acidic stability for use in the harshest of applications.

High Strength

Strongest unsupported materials on the market for ease of handling, longer life and thinner membranes, resulting in low ionic resistance.


High conductivity at both room and elevated temperatures to enable low resistance applications with higher current densities.


Soluble polymer in low-boiling solvents, allowing simple and consistent integration into existing product platforms as a strong industrial coating. Can be used as a stable, ion-conductive catalyst binder and enables coated, 3D electrodes


Reduces the environmental impact of your product throughout its entire lifecycle.

Anion Exchange Membrane applications

Hydrogen Electrolysis

Next gen anion exchange membranes were developed specifically for use in hot and strong alkaline environments and are the leading solution available for the evolution of low cost, high efficiency alkaline membrane electrolysis systems. The high hydroxide ion conductivity enables high efficiency and energy density, which lead to overall opex and capex reductions, while the chemical and mechanical integrity leads to longer operational usefulness.

An AEM electrolysis solution combines the benefits of PEM and alkaline systems by allowing the use of non-noble catalysts while achieving energy densities and efficiencies comparable to PEM technology. Today, commercially available membranes lack sufficient stability in alkaline, which has limited and the widespread adoption of AEM in electrolysis applications.

The cost of precious metals such as platinum and iridium dwarf those of commodity metals such as nickel and iron. AEMs will unlock the potential for massive cost savings and scalability currently limited by precious metal supply. The charts highlight just how extreme this difference is and the reductions in catalyst cost possible.

Hydrogen Fuel Cells

Anion exchange membranes were developed for stability in strong alkaline solutions under the oxidizing conditions of high voltage and current. They represent one of the leading solutions available for continued development in next-generation, low cost, high efficiency fuel cells.

Current generation fuel cells require expensive precious metal catalysts such as platinum to operate effectively since commodity metals simply cannot function in, or withstand the harsh acidic environment of the fuel cell.

Anion exchange membranes enable OEM fuel cell developers to scale up lower cost innovative system architectures that do not require precious metals. Using alternative liquid fuels, AEM fuel cells significantly increase the power density over existing PEM-based systems. Capable of decreasing the system cost by as much as 80%, platinum-free fuel cells are cost-competitive with combustion engines and achieve the minimum environmental impact for any power system.

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We are proud to be Ionomr's European distributor and to push for a Green change towards a sustainable future.

Anion exchange membranes are making Fuel cells a sustainable solution once again and we are looking forward to help you test and experiment with this upcoming technology that can potentially change the future of energy as we know it.