Ion Exchange Membranes

Xergy Inc. is the world leader in the development and commercialization of composite ion exchange membranes. Whether it is with our state-of-the-art XION™ Ion Exchange Membranes or membranes developed to your custom specifications, Xergy has the technology and expertise to provide high performance ion exchange solutions for your application.

Xergy has experience with a wide variety of ionomer chemistries for both cation and anion exchange membranes, along with expertise with numerous reinforcement materials and techniques. Our team stays on the cutting edge of ion exchange materials research, allowing us to deliver ultra-thin, high strength, and high performance ion exchange membranes.


Fully Customizable

Xergy Inc. is proud to offer the widest variety of ionomer chemistries and membrane preparations on the market. Alongside our state-of-the-art stock XION™ Ion Exchange Membranes, we can provide membranes tailored to your exact needs. Contact our team with your specifications to get started.


Xergy Inc. offers membranes as thin as 10 microns (0.4 mil), enabling higher performance and stability at lower ionomer loadings, lower cost.

High Strength

Xergy Inc.’s reinforced composite ion exchange membranes provide excellent mechanical strength and stability to a wide variety of ionomer chemistries. Our compositing technology provides increased tensile strength and decreased dimensional water swelling to any ion exchange material.


R&D Solutions

Xergy’s team will help you develop the highest-performance ion exchange membrane for your application. Our expertise and pilot capability help you rapidly optimize the properties of your materials.

We have a wealth of experience with developing ion exchange membranes from novel ionomer chemistries. We pride ourselves on enabling the next generation of ion exchange membrane research and development.


Xergy also offers contract solution coating services to help you scale up to roll-to-roll production of consistent, high-performance films. We have experience with ion exchange membranes as well as various other functional polymer films. Contact our team today for more information about our capabilities.

Exchange Membranes in Action: Operating principles of a Proton Exchange Membrane (PEM) Fuel Cell (left) and an Anion Exchange Membrane (AEM) Fuel Cell (right). Xergy’s XION™-XC Cation Exchange Membranes and XION™-XA Anion Exchange Membranes offer high performance in fuel cell systems, among a wide variety of other applications.


  • Fuel Cells
  • Electrolysis
  • Electrodialysis
  • Redox Flow Batteries
  • Pervaporation
  • …and more!


XIONTM-XA Series (Anion Exchange Membrane

XIONTM-XC Series (Cation Exchange Membrane)

Thickness (μm)a



Tensile strength, Max (MPa)b



Modulus (MPa)b

as high as 800

as high as 600

Water uptake (wt%)c

< 80

< 50

Swelling (%)c

< 80

< 50

In-plane conductivity (mS cm-1)d

> 60

60 – 300

Area Specific Resistance (ohm cm2)d

as low as 0.06

as low as 0.04

Hydrogen Crossover (mA cm-2)d

< 2

< 2

Water permeability (10-10 g s-1 m-1 Pa-1)e

as high as 10

as high as 10

•Other thicknesses available upon request

  • Measured at 50% RH, 23 °C
  • Measured after 24 h soak in 80 °C water
  • Measured at 100% RH, 70 °C
  • ASTM E96

These materials are considered to be experimental or developmental. The formulation, performance characteristics and other properties, specifications (if any), availability, and pricing are not guaranteed and are subject to change or withdraw without notice. Any technical information, recommendations, and other statements contained in this document or provided by Xergy personnel about the experimental materials are based on limited information and the accuracy or completeness of such information is not guaranteed. Such information should not be used for specification purposes. Such information is intended for persons with knowledge and technical skills sufficient to access and apply their own informed judgement to the information.

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