N-117 Proton Exchange Membrane 

VONTEX  perfluorosulfonic acid (PFSA) membranes are  non-reinforced films based on chemically stabilized  PFSA/polytetrafluoroethylene (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.