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676470

Sigma-Aldrich

Nafion™ perfluorinated membrane

thickness 0.002 in.

Synonym(s):

NR-212, Perfluoro-3,6-dioxa-4-methyl-7-octenesulfonic polymer, Perfluoro[2-(2-sulfonylfluoroethoxy)propyl vinyl ether]-tetrafluoroethylene, Tetrafluoroethylene-perfluoro-3,6-dioxa-4-methyl-7-octenesulfonic acid

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About This Item

Linear Formula:
(C7HF13O5S . C2F4)x
CAS Number:
31175-20-9
MDL number:
MFCD00132790
UNSPSC Code:
26111700
eCl@ss:
32110203
NACRES:
NA.23

eq. wt.

1,100

L × W

12 in. × 12 in.

thickness

0.002 in.

solubility

H2O: insoluble

InChI

1S/C7HF13O5S.C2F4/c8-1(9)2(10)24-5(15,16)3(11,4(12,13)14)25-6(17,18)7(19,20)26(21,22)23;3-1(4)2(5)6/h(H,21,22,23);

InChI key

FOYUGSIADQEOEK-UHFFFAOYSA-N

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General description

Nafion™ NRE-212 membranes may be used in the investigation of oxygen reduction reaction (ORR) activity of Pt/C catalyst.

Application

Carbon nanotube reinforced Nafion™ composites may be prepared to be used in H2O2 fuel cells.
Nafion™ perfluorinated membrane is mainly used as a proton exchange membrane (PEM) for fuel cell applications. It has good proton conductivity and good physio-chemical stability. It can also be used as a reference membrane to compare and prepare high-performance composite membranes.
Nafion™ is a perfluorinated ion-exchange membrane which has a wide variety of commercial uses. The acidic (hydrogen ion) form and derivatives are solid, superacid catalysts useful in a wide variety of synthetic applications.

Packaging

Darkening/browning is common for pieces stored in a general room environment for an extended period of time (several months), due to organics pick-up. Verify product is kept sealed during storage.
· Keep pieces sealed and protected from general exposure will reduce the effect. Recommend long term storage in air-tight bags.
· Discoloration does not affect performance and can be removed by soaking in dilute nitric acid.

Legal Information

Nafion is a trademark of The Chemours Company FC, LLC

Storage Class Code

11 - Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Carbon nanotubes reinforced Nafion composite membrane for fuel cell applications.
Liu YH, et al.
Electrochemical and Solid-State Letters, 9(7), A356-A359 (2006)
Effect of methanol concentration on oxygen reduction reaction activity of Pt/C catalysts.
Shuihua, T. A. N. G., et al.
Chinese Journal of Catalysis, 34(6), 1105-1111 (2013)
Min-Ho Park et al.
Advanced materials (Deerfield Beach, Fla.), 27(29), 4308-4314 (2015-06-24)
A novel flexible encapsulation method (Flex Lami-capsulation) is reported, which can be applied in the roll-to-roll process for mass production of organic electronic devices. Flex Lami-capsulation is very simple, fast, and getter-free, and is as effective as glass encapsulation. Use

Articles

Materials Issues in Polymer Electrolyte Membrane Fuel Cells

Fuel cells have the potential to reduce the nation’s energy use through increased energy conversion efficiency and dependence on imported petroleum by the use of hydrogen from renewable resources.

Proton Exchange Membrane (PEM) Fuel Cells

Proton exchange membrane (PEM) fuel cells operate at relatively low temperatures and are composed of two electrodes and a conductive elecrolyte.

Perfluorosulfonic Acid Membranes for Fuel Cell and Electrolyser Applications

Advances in the electrochemical conversion of water to and from hydrogen and oxygen have principally been achieved through the development of new materials and by understanding the mechanisms of the degradation of proton exchange membrane fuel cells (PEMFC) during operation.

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