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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.[1]

Application

Carbon nanotube reinforced Nafion™ composites may be prepared to be used in H2O2 fuel cells.[2]
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.
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.[3][4][2]

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

11 - Combustible Solids

wgk_germany

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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Certificates of Analysis (COA)

Lot/Batch Number
MKCP9925
MKCP2084
MKCK6376
MKCH2387
MKCF8929

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Pt/SiO2 catalyst as an addition to Nafion/PTFE self-humidifying composite membrane
Wang L, et al.
Journal of Power Sources, 161(1), 61-67 (2006)
Novel multilayer Nafion/SPI/Nafion composite membrane for PEMFCs
Wang L, et al.
Journal of Power Sources, 164(1), 80-85 (2007)
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 in Polymer Electrolyte Membrane Fuel Cells

Polymer electrolyte membrane (PEM) fuel cells offer high efficiency and low-temperature operation, reducing oil use in light-duty vehicle transportation.

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 Cells

Advances in electrochemical water conversion and understanding PEMFC degradation drive progress in hydrogen technologies.

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