Do acid–base interactions really improve the ion conduction in a proton exchange membrane? – a study on the effect of basic groups

2019 ◽  
Vol 7 (34) ◽  
pp. 19820-19830 ◽  
Author(s):  
Yuqian Sui ◽  
Yexin Du ◽  
Huayuan Hu ◽  
Jieshu Qian ◽  
Xuan Zhang
Keyword(s):  
Physicochemical Properties ◽  
Sulfonic Acid ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Acid Base ◽  
Ion Conduction ◽  
Exchange Membrane ◽  
Sulfonic Acid Groups

Generating acid–base interactions between sulfonic acid groups in a proton exchange membrane (PEM) and the incorporation of basic groups are effective approaches to improving the physicochemical properties of a membrane.

Ionomers for Proton Exchange Membrane Fuel Cells with Sulfonic Acid Groups on the End Groups:  Novel Linear Aromatic Poly(sulfide−ketone)s

2008 ◽  
Vol 41 (2) ◽  
pp. 277-280 ◽  
Author(s):  
Sumiko Matsumura ◽  
Antisar R. Hlil ◽  
Catherine Lepiller ◽  
Julie Gaudet ◽  
Daniel Guay ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Sulfonic Acid ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
End Groups ◽  
Exchange Membrane ◽  
Sulfonic Acid Groups

Ionomers for Proton Exchange Membrane Fuel Cells with Sulfonic Acid Groups on the End Groups:  Novel Branched Poly(ether−ketone)s

2008 ◽  
Vol 41 (2) ◽  
pp. 281-284 ◽  
Author(s):  
Sumiko Matsumura ◽  
Antisar R. Hlil ◽  
Catherine Lepiller ◽  
Julie Gaudet ◽  
Daniel Guay ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Sulfonic Acid ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
End Groups ◽  
Ether Ketone ◽  
Exchange Membrane ◽  
Sulfonic Acid Groups

Fluorinated poly(arylenethioethersulfone) copolymers containing pendant sulfonic acid groups for proton exchange membrane materials

Polymer ◽  
2009 ◽  
Vol 50 (6) ◽  
pp. 1463-1469 ◽  
Author(s):  
Zongwu Bai ◽  
Joseph A. Shumaker ◽  
Marlene D. Houtz ◽  
Peter A. Mirau ◽  
Thuy D. Dang
Keyword(s):  
Sulfonic Acid ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Membrane Materials ◽  
Exchange Membrane ◽  
Sulfonic Acid Groups

scholarly journals Spectroscopic study of Nafion® membrane as a function of water content by Phase-Resolved Photoacoustic Method

2016 ◽  
Vol 3 (1) ◽  
Author(s):  
Guy Lopes ◽  
Daniele Toniolo Dias ◽  
Caroline Dias Rosa ◽  
Juliana Soares De Souza
Keyword(s):  
Sulfonic Acid ◽  
Proton Exchange Membrane ◽  
Structural Changes ◽  
Proton Exchange ◽  
Phase Lag ◽  
Ionic Polymer ◽  
Photoacoustic Method ◽  
Exchange Membrane ◽  
Methylene Group ◽  
Sulfonic Acid Groups

Nafion® membranes were developed by DuPont, a perfluorosulfonic acid/polytetrafluoroethylene copolymer. These membranes are hydrophilic and the water is preferentially sorbed into the clusters due to the hydrophobic character of fluorocarbon matrix. The sulfonic acid groups are chemically active and fixed within the Teflon polymer matrix. Thus, this first synthetic ionic polymer is chemically resistant and durable, making it useful for Proton Exchange Membrane fuel cells. In order to monitoring the groups -OH of the Nafion®, we used the Photoacoustic Spectroscopy phases. The optical absorption spectrum was determined for wavelengths of 800 to 2600 nm. The procedure was to measure the samples in different hydration times. Using the Phase-Resolved Photoacoustic method, it was possible to separate the contribution of –OH, of C=O and of methylene group. The phase lag as a water function behaviors found may be associated with structural changes induced by membrane hydration.

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