Nafion™ NR211 PFSA Membrane
- Brand: Chemours
- Product Code: FE010814
- SKU: FE010814
- Availability: In Stock
267.75€
- Ex Tax: 225.00€
Nafion™ 211 is a high-performance proton exchange membrane (PEM) designed for use in fuel cells and electrolysis reactors, serving as a critical separator between anodes and cathodes. This ultra-thin membrane, with a thickness of approximately 25.4 µm, enables efficient ion transport while maintaining excellent mechanical strength.
Chemours® (formerly DuPont®) Nafion™ 211 membranes are composed of a chemically stabilized perfluorosulfonic acid (PFSA) and PTFE copolymer in its acid form (H+). Their advanced stabilization results in significantly lower fluoride ion release compared to unstabilized alternatives, offering superior chemical resistance and long-term durability. Widely recognized for its reliability, Nafion™ 211 enhances the performance of hydrogen fuel cells, water electrolyzers, and other electrochemical systems that demand precise ion conductivity and robust membrane integrity.
Designed as an unreinforced film, Nafion™ 211 ensures consistent proton exchange while effectively preventing undesired crossover reactions, optimizing both efficiency and lifespan in electrochemical applications. This membrane is an ideal choice for researchers and professionals looking for enhanced conductivity, stability, and chemical durability.
Discounts are available for bulk orders of 5, 10, or 20 pieces.
The standard size is 30 x 30 cm. Other dimensions are available on request. We offer different versions of Nafion membranes. Please ask for an quote.
|
Membrane Properties |
|
|
Thickness |
25.4 microns (2.5 mil) |
|
Weight (g / m²) |
50 |
|
Tensile Strenght - max. (MPa) |
23 (MD), 28 (TD) - method: ASTM D 882 |
|
Non-Standard-Module (MPa) |
288 (MD), 281 (TD) - method: ASTM D 882 |
|
Elongation at Break (%) |
252 (MD), 311 (TD) - method: ASTM D 882 |
|
Hydrogen crossover (ml/minxcm²) |
< 0.020 |
|
Specific Gravity (23 °C, 50% RH) |
1,97 |
|
Available Acid Capacity (meq / g) |
0.92 min |
|
Total Acid Capacity (meq / g) |
0.95 to 1.01 |
|
Hydrolytic Properties |
|
|
Water Content (% Water) |
5.0±3.0% - method: ASTM D 570 |
|
Swelling (% Water) |
50.0±5.0% - Methode: ASTM D 570 |
|
Linear Expansion % Increase - 50% RH, 23 °C |
10.0 - method: ASTM D 756 |
|
Linear Expansion % Increase - 50% RH, 23 °C to 100 °C |
15.0 - method: ASTM D 756 |
Tags: Nafion, perfluorosulfonic acid, PTFE, membrane, cation exchange membrane, proton exchange membrane, PFSA, DuPont, Chemours
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