PFSA D170-U Proton Exchange Membrane

PFSA D170-U Proton Exchange Membrane (PEM) is used to separate the anode and cathode compartment of PEM water electrolyzers because of its relatively thick nature (~170 microns or 7-mils or 0.007 inches) and robustness compared to other thinner PFSA membranes. This is an unreinforced (also known as self-supporting) PFSA membrane and it is manufactured via extrusion melt process. Both unpressurized or pressurized PEM electrolyzer stacks can use this membrane product in order to achieve long operational lifetimes. Other electrochemical applications that can benefit from this PFSA D170-U Proton Exchange Membrane are as follow: direct methanol fuel cells (DMFCs), direct formic acid fuel cells (DFAFC), microbial fuel cells (MFC) and other applications that require a thick PFSA membrane. While it is not that common to use thick PFSA membranes for PEM fuel cell applications with the exception of some niche applications (such as high pressure PEM fuel cells for space applications), researchers and product developers can also use this membrane for H2/Air and H2/O2 PEM fuel cell applications too.

D170-U expands the possibility of finding an excellent fit for your requirements, without diminishing the worth of Nafion 117.

PFSA D170-U Proton Exchange Membrane is based on the chemically stabilized perfluorosulfonic acid material and it is shipped in the acid (H+) form (which is also known as protonic form). Chemical stabilization is also known as end-group stabilization where the carbon atoms that end of the PFSA polymer chains are fully fluorinated. Chemically stabilized PFSA membranes will exhibit substantially lower fluoride ion release compared to the PFSA membranes manufactured from unstabilized PFSA resin.  Functional groups (also known as sulfonic acid sites) for this PFSA membrane are based on the long side chain for its chemical structure.

Proton exchange membranes are also known as cation exchange membranes in the market. This PFSA membrane performs as a separator and solid electrolyte (without the need of a liquid acid) in a variety of electrochemical cells that require the membrane to selectively transport protons or other various cations across the cell junction (or between anode and cathode catalyst layers). The polymer is chemically resistant and durable.

Please contact us at sales@fuelcellstore.com for the SDS and technical data sheets (TDS).

Membrane Properties
Thickness	170 micrometers +/- 10 micrometers
Basic Weight (g/m²)	350 +/- 10 grams/m2
Conductivity (S/cm)	≥ 0.1 S/cm (based on GB/T 20042.3-2009)
Ion Exchange Capacity	≥ 0.90 mmol/g (based on GB/T 20042.3-2009)
Swelling (%)	≤ 20% (based on ASTM D570)
Tensile Modulus	≥ 180 MPa (based on ASTM D882)
Tensile Strength - max. (MPa)	≥ 25 MPa (based on ASTM D882)
Elongation to Break (%)	≥300% (based on ASTM D882)
Membrane Hydrolytic Properties
Water uptake (% water)	≤ 30% (based on ASTM D570)

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