About
Perfluorosulfonic acid ion exchange membrane, also known as perfluorosulfonic acid proton exchange membrane and cation exchange membrane, is a solid polymer electrolyte, a strong acid type ion exchange membrane, with good chemical and thermal stability, low voltage, and low membrane resistance. High conductivity, good hydrophilicity, high water content of the membrane, high mechanical strength, etc., can be used under harsh conditions such as strong acid, strong alkali, strong oxidant medium and high temperature. Due to its own characteristics, perfluorosulfonic acid Proton exchange membranes are not only used as key components of proton exchange membrane fuel cells, but also widely used in the chlor-alkali industry, all-vanadium flow batteries, hydrogen production by water electrolysis, electrochemical synthesis, and gas sensors.
Characteristics for
Chemical Name:Perfluorinated on exchange membrane N-21
Synonyms:Perfluorinated proton exchange membrane,perfluorinated ionomer membrane,proton exchange membrane,ion exchange membrane,Perfluorosulfonic acid membrane
CAS NO.:31175-20-9
Appearance: White membrane
Formula:(C7HF13O5S . C2F4)x
Application:hydrogen fuel cell,vanadium flow batteries, chlor-alkali industry for the production of NaOH and KOH, water treatment device
REF. FOB Price:USD100-1500/Piece
Min. Order:1 piece
Payment Terms:L/C,T/T,Western Union,Paypal
Lead Time:10-15 days
Month Capacity:30000 square meters
Technical Index:
Physical and Other Properties |
Values |
Test Method |
|
|
|
Tensile Strength MD, max., MPa |
36 |
ASTM D882 |
Tensile Module, MPa |
410 |
ASTM D882 |
Elongation at break, % |
190 |
ASTM D882 |
Specific Gravity |
1.98 |
|
|
|
|
Other Properties |
Values |
Test Method |
Conductivity, S/cm |
0.10 |
GB/T 20042.3-2009 |
Acid capacity, meq/g |
1.0 |
GB/T 20042.3-2009 |
|
|
|
Hydrolytic Properties |
Values |
Test Method |
Water Content, % |
5.0+-3.0 |
ASTMD570 |
Water Uptake, % |
50.0+-5.0 |
ASTMD570 |
Thickness Change, |
|
ASTM D 756 |
Linear Expansion, |
|
ASTM D 756 |
1, Measurements taken with membrane conditioned to 23 C,50% RH.
2, Conductivity measurements at 23 C,100% RH.
3, A base titration procedure measures the equivalents of sulfonic acid in the polymer, and uses the measurement to calculate the acid capacity or equivalent weight of the membrane.
4, Water content of membrane conditioned to 23 C and 50% RH (dry weight basis).
5, Water uptake from dry membrane to conditioned in water at 100 C for 1hour (dry weight basis ).
Thickness of the PFSA membranes
Type |
Thickness(um) |
|
N-21 |
N-211 |
25 |
N-212 |
51 |
Remarks:The thickness is approximate number, we do not assure absolute precision. Please contact with our salesman if special thickness is requested.
Application:
The PFSA membranes N-21 are non-reinforced films based on PFSA polymer, a perfluorosulfonic acid in the acid (H+) form. Our PFSA membranes perform as a solid polymer electrolyte in fuel cells and other applications in electrochemistry and separation technology for a variety of electrochemical process, especially in the redox flow battery (RFB).
The N-21 membrane is particularly suitable for use as a solid electrolyte membrane in Proton Exchange Membrane (PEM) fuel cells, water electrolyzers,vanadium cells, electrolytic cells, electrodialysis, electrochemical sensors, and so on.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.
The membranes are located between the cathode and anode and transports protons formed near the catalyst at the hydrogen electrode to the oxygen electrode thereby allowing the current to be drawn from the cell. The membranes show significant improvements in features such as better resistance to chemical attack and longer operating durability in the redox flow battery (RFB).