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NAFION® Membranes


The NAFION® membrane is the industry standard for water electrolyzers and Proton Exchange Membrane (PEM) fuel cells. The membrane is ideal when selective cation transportation through a cell junction is desired. Excellent fuel cell solid electrolyte functions and internal separation is achieved in electrochemical cells. NAFION® membranes have a solid reputation for their durability and resistance to a variety of chemicals.

Ion Power has a wide selection of NAFION® PFSA membranes for use across the spectrum of scientific and industrial applications.  The physical properties are the same for stabilized membranes such as fuel cell grade membranes, only. They exhibit substantially lower fluoride ion release compared to the non-stabilized polymer which is a sign of greater chemical durability.

XL Membrane - DuPont™ NAFION® XL membrane is an extended-lifetime reinforced membrane based on chemically stabilized perfluorosulfonic acid/PTFE copolymer in the acid (H+) form.

The reinforcement improves the membrane's handling and physical properties. When this is combined with the chemically stabilized polymer, the membrane exhibits enhanced durability and significantly lower fluoride ion release.

HP Membrane - The NAFION® HP membrane is a reinforced membrane designed for lower relative humidity and high operating temperature. Since it is reinforced, the lifetime is longer than non-reinforced membranes. The HP is a thin membrane of about 0.8 mils and offers high power density

Fabric Reinforced Membranes - These reinforced films are preferred in those industrial-sized electrochemical applications with large areas (typically in square meters) where membrane strength is needed.

N438 membrane This is a new addition in the 400 Series line. It features a new PTFE monofilament reinforcement for increased strength. However, the N438 profile is flatter than the N424. Expansion characteristics will be more uniform with the expectation for a reduction in edge leakage.

Non-Reinforced Films – Popular for separators in electrochemical cells requiring high ionic conductivity such as fuel cells and water electrolyzers. Product names include: N115, N117 and N1110.

Cast Films - NAFION® PFSA NR-211 and NR-212 membranes are non-reinforced dispersion-cast films.
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Nafion® XL Membrane
NAFION® Membrane XL
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1.1 mil, Technical Information 
Thickness, Note: 1 mil = 25.4 microns
NAFION® Membrane N115
NAFION® Membrane N115
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5 mil, Technical Information 
Thickness, Note: 1 mil = 25.4 microns
NAFION® Membrane HP
NAFION® Membrane HP
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0.8 mil (Thickness, Note: 1 mil = 25.4 microns)
NAFION® 117
NAFION® Membrane N117
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7 mil, Technical Information 
Thickness, Note: 1 mil = 25.4 microns
NAFION® Membrane N1110
NAFION® Membrane N1110
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10 mil, Technical Information 
Thickness, Note: 1 mil = 25.4 microns
NAFION® Membrane NR-212
NAFION® Membrane NR-212
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2 mil, EW 1100, Technical Information
Thickness, Note: 1 mil = 25.4 microns
NAFION® Membrane NR-211
NAFION® Membrane NR-211
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1 mil, EW 1100, Technical Information
Thickness, Note: 1 mil = 25.4 microns
NAFION® Membrane N324
NAFION® Membrane N324, Teflon Fabric Reinforced
Our Price: $265.00

NAFION® N-324 0.30 X 0.30 Meters, Technical Information
NAFION® Membrane N424
NAFION® Membrane N424, Teflon Fabric Reinforced
Our Price: $315.00

NAFION® N-424 0.30 X 0.30 Meters, Technical Information
NAFION® Membrane N438
NAFION® Membrane N438, Teflon Fabric Reinforced
Our Price: $325.00

NAFION® N438 0.30 X 0.30 Meters