Nafion 115 Proton Exchange Membrane

Overview

Nafion 115 is a perfluorosulfonic acid (PFSA) proton exchange membrane with a nominal thickness of 127 µm, designed for PEM fuel cells, PEM electrolysers, and laboratory electrochemical cells. Its fully fluorinated backbone provides excellent chemical resistance, while the sulfonic acid groups enable high proton conductivity when hydrated.

Working principle
Under hydrated conditions, the membrane selectively transports H⁺ ions from anode to cathode while acting as a gas separator. This allows efficient electrochemical reactions without reactant crossover.

Key features

• Thickness: ~127 µm – good balance of conductivity and mechanical strength
• High proton conductivity and low gas permeability
• Chemically stable PFSA structure
• Supplied as flat sheet suitable for 10 × 10 cm to 20 × 30 cm cells
• Compatible with MEA development, stack prototyping and education
  
  

Applications

• PEM fuel cell stack testing
• PEM water electrolysis
• Electro-organic synthesis in acidic media
• Reference testing of alternative membranes
  
  

Why ScienceGears
ScienceGears supplies laboratory-friendly sheet sizes in Australia & New Zealand and can recommend matching MEA test cells, humidification modules and potentiostats for complete setups.