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Membranes

In order for a PEM fuel cell to operate, a Proton Exchange Membrane is needed that will carry the hydrogen ions, proton, from the anode to the cathode without passing the electrons that were removed from the hydrogen atoms. These polymer membranes that conduct proton through the membrane but are reasonably impermeable to the gases, serve as solid electrolytes (vs. liquid electrolyte) for variety of electrochemical applications, and are commonly known as Proton Exchange Membrane and/or Polymer Electrolyte Membranes (PEM). These membranes have been identified as one of the key components for various consumer related applications for fuel cells, e.g. automobiles, back-up power, portable power etc. Due to its application for many consumer markets, the technology keeps on evolving to make these membranes suitable for longer duration, and even high temperature operations.

For PEM fuel cell and electrolyzer applications, a polymer electrolyte membrane is sandwiched between an anode electrode and a cathode electrode. During electrochemical reaction, oxidation reaction at the anode generates protons and electrons; reduction reaction at the cathode combines protons and electrons with oxidants to generate water. To complete the electrochemical reaction, the proton exchange membrane plays a critical role that conducts protons from anode to cathode through the membrane. The proton exchange membrane also performs as a separator for separating anode and cathode reactants in fuel cells and electrolyzers.

Main Types of Fuel Cell Ion Exchange Membranes

 

 • Cation Exchange Membrane (CEM)
 • Anion Exchange Membrane (AEM)
 • Bipolar Membranes
 • Chlor-alkali Production Membranes

Whats is the Difference Between Cation and Anion Exchange Membranes?
Cation Exchange Membranes (CEM) are usually comprised of a fluorinated polymer with sulfonic acid sites and have excellent ionic conductivity and thermal/chemical durability. Currently manufactured Anion Exchange Membranes (AEMs) can utilize various alkaline stable polymeric materials as the host material and come with various functional sites that conducts OH- or any other anionic species.  Thermal/chemical durability of AEMs are in general lower compared to its CEM counterparts.

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Fumasep FAS-30
Fumasep FAS-30 is a non-reinforced Anion Exchange Membrane (AEM) with very low resistance, high s..
From $15.00
Based on 3 reviews.

Fumasep FKE-50
Fumasep FKE-50 is a non-reinforced Cation Exchange Membrane (CEM) with very low resistance, high ..
From $16.00

Fumasep FAD-55
Fumasep FAD-55 is a non-reinforced Anion Exchange Membrane (AEM) with low resistance, high acid t..
From $15.00
Based on 1 reviews.

Fumasep F-10120-PK
Fumasep F-10120-PK is a PK reinforced Cation Exchange Membrane (CEM) with low resistance, high me..
From $36.00

Fumasep FAP-450
Fumasep FAP-450 is a non-reinforced Fluorinated Anion Exchange Membrane (AEM) with low resistance..
From $18.00

Fumapem AM-40 - PBI Copolymer
Fumapem AM-40 is a non-reinforced Polybenzimidazole Copolymer membrane designed for use in High-T..
From $25.00

Fumapem FS-715-RFS
Fumapem FS-715-RFS membrane is perfluorinated cation exchange membrane - reinforced and stabilize..
From $20.00
Based on 1 reviews.

Fumapem FS-930
Fumapem FS-930 membrane is a perfluorinated cation exchange membrane - non-reinforced and stabili..
From $18.00

Fumasep FKS-PET-75
Fumasep FKS-PET-75 is a PET reinforced Cation Exchange Membrane (CEM) with low resistance, high s..
$89.00

Fumasep FAA-3-PE-30
Fumasep FAA-3-PE-30 is an anion exchange membrane - PE-reinforced with low resistance, high selec..
From $17.00

Fumasep FS-950
Fumasep FS-950 membrane is perfluorinated cation exchange membrane - non-reinforced with low resi..
From $21.00
Based on 1 reviews.

Fumasep FS-9100-PK
Fumasep FS-9100-PK membrane is perfluorinated cation exchange membrane – PK-reinforced with low r..
From $42.00

Fumasep FAPQ-330
Fumasep FAPQ-330 is a fluorinated anion-exchange membrane - non-reinforced with low resistance, h..
From $17.00

Fumasep FAA-3-30
Fumasep FAA-3-30 is an anion-exchange membrane, non-reinforced with low resistance, high selectiv..
From $15.00

Fumasep FAM
Fumasep FAM is a heterogeneous anion-exchange membrane – PP-reinforced – thickness 450 – 500 µm, ..
From $17.00