Nafion™ 115

Brand: Chemours
Product Code: 591139

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Nafion™ Membrane is used to separate the anode and cathode compartment of Proton Exchange Membrane fuel cells and water electrolyzers. The thickness of this particular cation exchange membrane, Nafion™ 115 makes it suitable for Direct Methanol Fuel Cells (DMFC) and Electrolysis applications. Nafion™ 115 is 127 micrometers (5 mil) thick.

Chemours (formerly DuPont) Nafion™ 115 membranes are non-reinforced films based on chemically stabilized perfluorosulfonic acid/PTFE copolymer in the acid (H+) form. The physical properties remain the same for the chemically stabilized membranes, which 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™ 115, 117, and 1110 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 127 micrometers (5 mil)
Basic Weight (g/m²) 250
Tensile Strength - max. (MPa) 43 (6.2) in MD, 32 (4.6) in TD - Method: ASTM D 882
Non-Std Modulus (MPa) 249 (36) - Method: ASTM D 882
Elongation to Break (%) 225 (MD), 310 (TD) - Method: ASTM D 882
Tear Resistance - Initial (g/mm) 6000 (MD, TD) - Method: ASTM D 1004
Tear Resistance - Propagating (g/mm) >100 (MD), >150 (TD) - Method: ASTM D 1922
Specific Gravity (23 °C, 50% RH) 1.98
Available Acid Capacity (meq/g) 0.90 min
Total Acid Capacity (meq/g) 0.95 to 1.01
Conductivity (S/cm) 0.10 min
Membrane Hydrolytic Properties
Water content (% water) 5.0 - Method: ASTM D 570
Water uptake (% water) 38.0 - Method: ASTM D 570
Linear Expansion % increase - 50% RH, 23°C to water soaked 23°C 10.0 - Method: ASTM D 756
Linear Expansion % increase - 50% RH, 23°C to water soaked 100°C 15.0 - Method: ASTM D 756

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