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DuPont proton exchange membrane Nafion N115 N117 N1110 NC700 perfluorosulfonic acid membrane

Nafionrm is a perfluorosulfonic acid (PFSA) membrane material developed by Chemours. It is based on a copolymer of PFSA and PTFE and has excellent proton conductivity, mechanical strength and chemical corrosion resistance.

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Widely used in:
PEM fuel cells
Water electrolyzers (hydrogen/oxygen production)
Vanadium flow batteries
Direct methanol fuel cells (DMFC)

 

Parameter comparison

Model Type Thickness(um) Typical Applications Conductivity (S/cm) Acid capacity (meq/g)
NR211 Solution casting 25.4 High-power fuel cells, lightweight electrolyzers ≥0.10 ≥0.92
NR212 Solution casting 50.8 PEM electrolysis, water treatment and other medium-voltage systems ≥0.10 ≥0.92
N115 Extrusion Cast Film 127 Fuel cells, water electrolysis, vanadium batteries ≥0.10 ≥0.90
N117 Extrusion Cast Film 183 DMFC, vanadium battery, electrolyzer ≥0.10 ≥0.90

 

NR211 (25.4µm) Model Details:
1. Ultra-thin design, extremely low ion transmission resistance
2. No reinforcement layer, highly flexible, suitable for experiments and stacking
3. Suitable for high-power fuel cells
4.Note: Includes a PET protective film, which must be removed before use

 

NR212 (50.8µm) Model Details:
1. Double the thickness of NR211, offering superior gas barrier properties
2. More suitable for applications requiring high airtightness, such as PEM electrolyzers
3. Also a non-reinforced membrane, offering excellent mechanical compliance

 

N115 (127µm) Model Details:
1. Extruded film structure, moderate thickness, widely adaptable
2. Suitable for continuous operation equipment, excellent thermal stability
3. No backing required, ready for use
4. Tensile strength: 43MPa (MD); Water absorption: 38%; Acid capacity: >0.90meq/g

 

N117 (183µm) Model Details:
1. Thick film design, excellent dimensional stability and gas crossover resistance
2. Widely used in DMFCs, hydrogen production systems, and vanadium flow batteries
3. Tensile strength: 43MPa (MD); Water absorption: 38%; Acid capacity: >0.90meq/g

 

 

Packaging and Instructions:
Shipment is in dry film form, vacuum-sealed in aluminum foil to prevent contamination and inactivation.
Unused film: Store in a sealed container away from light and moisture.
Opened film: Store refrigerated (4-8 °C). Do not freeze or expose to air.

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