Nafion™ XL

Brand: Chemours
Product Code: 1600002

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From $34.00

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Please note that Nafion™ XL has been discontinued by Chemours and only limited supplies are available for the time being.

Nafion™ XL membranes are newly developed reinforced membranes that enhance the chemical stability of Nafion™ membranes. The mechanical durability and enhanced chemical stability of the Nafion™ XL membrane are the result of an advanced stabilization system that increases mechanical strength and provides resistance to peroxide attack, resulting in improved membrane life and performance. Nafion™ XL is 27.5 micrometers (1.1 mil) thick. The cation exchange membrane is positioned between a backing film and a coversheet.

Chemours (formerly DuPont) Nafion™ XL membranes are based on chemically stabilized perfluorosulfonic acid/PTFE copolymer in the acid (H+) form, and exhibit substantially lower fluoride ion release compared to the non-stabilized polymer – a sign of improved chemical durability. Nafion™ PFSA membranes are widely used for Proton Exchange Membrane (PEM) fuel cells and water electrolyzers. The membrane performs as a separator and solid electrolyte in a variety of electrochemical cells that require the membrane to selectively transport cations across the cell junction. The polymer is chemically resistant and durable.

Nafion™ XL Membrane Properties Sheet

Handling and Storage of Chemours Nafion™ Perfluorinated Membranes

Nafion™ Membrane Technical Bulletin No. 93-01 for "DRY" H+ Membrane Pretreatment

Nafion™ Membrane Safety Handling Technical Information Bulletin T-01

Membrane Properties
Thickness 27.5 micrometers (1.1 mil)
Basic Weight (g/m²) 55
Tensile Strength - max. (MPa) 45 (MD), 40 (TD) - Method: ASTM D 882
Non-Std Modulus (MPa) 613 (MD), 400 (TD) - Method: ASTM D 882
Elongation to Break (%) 200 (MD),185 (TD) - Method: ASTM D 882
Hydrogen Crossover (ml/min·cm²) < 0.015
In-Plane Conductivity (mS/cm) > 72.0
Through-Plane Conductivity (mS/cm) > 50.5
Membrane Hydrolytic Properties
Water content (% water) 5.0 ± 3.0% - Method: ASTM D 570
Water uptake (% water) 50.0 ± 5.0% - Method: ASTM D 570
Linear Expansion % increase - 50% RH, 23°C to water soaked 23°C 1% (MD), 5% (TD)
Linear Expansion % increase - 50% RH, 23°C to water soaked 100°C 3% (MD), 11% (TD)

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