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Nafion™ 115
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.
Please contact us at sales@fuelcellstore.com for the SDS and technical data sheets (TDS).
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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