Nafion™ perfluorosulfonic acid (PFSA) membranes are based on a PFSA/polytetrafluoroethylene (PTFE) copolymer. Widely used in electrochemical cells, they function as cation-conducting solid electrolytes. Nafion™ membranes come in a variety of grades and embody different properties, allowing designers and engineers to match membranes to their specific application needs.
Nafion™ PFSA membranes have unique characteristics and can be used in a variety of applications. (See table below.)
Table 1: Nafion™ Solution Cast Membranes
| Grade | Description | Chemically Stabilized | Common Use(s) |
| NR211 | 25-micron thickness | Yes | Energy storage, fuel cells |
| NR212 | 50-micron thickness | Yes | Energy storage, fuel cells |
Table 2: Nafion™ Extrusion Cast Membranes
| Grade | Description | Chemically Stabilized | Common Use(s) |
| N115 | 127-micron thickness | Yes | Energy storage, hydrogen generation, various electrolytic processes |
| N117 | 183-micron thickness | Yes | Energy storage, hydrogen generation, various electrolytic processes |
