Nafion® Proton Exchange Membrane,PEM

Product Overview

The Nafion® Proton Exchange Membrane (PEM) is a perfluorosulfonic acid (PFSA) polymer membrane widely used as a solid electrolyte and separator in electrochemical systems. It enables efficient proton (H⁺) transport while effectively blocking electrons and reactant crossover, ensuring stable and reproducible electrochemical performance.

Nafion membranes are the industry standard for PEM fuel cells, water electrolysis, membrane-separated electrochemical cells, and laboratory-scale electrochemical research.

This product is supplied in N115 and N117 grades, with multiple standard shapes and sizes available to match common laboratory electrochemical cell designs.

Key Features

• High proton conductivity with low ionic resistance
• Excellent chemical stability in acidic and electrochemical environments
• Low gas and liquid crossover
• Proven long-term durability under electrochemical operation
• Compatible with PEM fuel cells, electrolyzers, and membrane-separated reactors
• Suitable for both research-scale and pilot-scale experiments

Available Types

Nafion N115

A general-purpose proton exchange membrane offering a balance between conductivity and mechanical strength.

Nafion N117

A thicker membrane designed for lower crossover and enhanced mechanical durability, ideal for long-duration experiments and larger cells.

Technical Specifications

Typical values based on manufacturer data. Actual performance may vary with pretreatment and operating conditions.

Available Shapes & Sizes

Standard circular formats
Φ30 mm / Φ40 mm / Φ50 mm / Φ60 mm / Φ70 mm / Φ80 mm

Standard square formats
30 × 30 mm / 40 × 40 mm / 50 × 50 mm / 60 × 60 mm
70 × 70 mm / 80 × 80 mm / 100 × 100 mm / 200 × 200 mm

Custom cutting and sizing are available upon request.

Typical Applications

• Proton Exchange Membrane Fuel Cells (PEMFC)
• Proton Exchange Membrane Water Electrolyzers (PEMWE)
• H-type electrochemical cells and membrane-separated reactors
• Electrocatalysis and mechanism studies
• Electro-organic synthesis (acidic systems)
• Gas separation and electrochemical sensing

Usage & Handling Recommendations

• Handle with clean gloves to avoid surface contamination
• Membrane pretreatment (acid wash / hydration) is recommended before use
• Avoid mechanical stretching, folding, or sharp creasing
• Ensure uniform clamping pressure when assembling membrane cells
• Store unused membranes in sealed packaging to prevent dehydration

Storage Conditions

• Store in a clean, dry environment
• Recommended temperature: 5–30 °C
• Avoid direct sunlight and prolonged air exposure
• Keep sealed when not in use

Packaging

• Supplied as individual membrane pieces
• Flat-packed to prevent deformation
• Clean laboratory-grade packaging

Customization & Support

Custom shapes, thickness recommendations, and membrane selection guidance are available.

If you have custom requirements or need technical support, please contact us:

📧 support@franklab.shop

Why FrankLab

FrankLab membranes and electrochemical components are selected and supplied by electrochemists, for electrochemists.

Every product focuses on:
• Experimental reliability
• Clean geometry and compatibility
• Reproducible electrochemical performance
• Seamless integration with real laboratory workflows

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