Sulfonated Poly(aryl ether)‐Type Polymers as Proton Exchange Membranes: Synthesis and Performance

Liu, Baijun; Kim, Dae‐Sik; Guiver, Michael D.; Kim, Yu Seung; Pivovar, Bryan S.

doi:10.1002/9783527622146.ch1

Cited by 9 publications

(12 citation statements)

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“…Nafion ® , a perfluorinated sulfonic acid (PFSA) membrane, was utilized in PEMFC to overcome such a weakness. While Nafion ® membranes were originally developed for the chloroalkali permselective membranes, they have been widely used in PEMFCs because of their excellent chemical and oxidative stability derived from their perfluorinated backbone [27,34]. Despite the low ion exchange capacity (e.g., IEC of Nafion ® 112 = 0.9 mequiv.…”

Section: Introductionmentioning

confidence: 99%

Sulfonated hydrocarbon membranes for medium-temperature and low-humidity proton exchange membrane fuel cells (PEMFCs)

Park

Lee

Guiver

2011

Progress in Polymer Science

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Section: Introductionmentioning

confidence: 99%

Sulfonated hydrocarbon membranes for medium-temperature and low-humidity proton exchange membrane fuel cells (PEMFCs)

Park

Lee

Guiver

2011

Progress in Polymer Science

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611

229

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“…However, the cost of Nafion remains high because the polymerization process of perfluorinated polymer is complex and must be carried out under harsh conditions such as high temperature and high pressure. [3][4][5] Moreover, the mechanical stability and proton conductivity of Nafion can decrease when it is heated over 80°C, owing to its low glasstransition temperature. 4,5 To overcome these problems, sulfonated hydrocarbon PEMs have been investigated as alternatives.…”

Section: Introductionmentioning

confidence: 99%

“…[3][4][5] Moreover, the mechanical stability and proton conductivity of Nafion can decrease when it is heated over 80°C, owing to its low glasstransition temperature. 4,5 To overcome these problems, sulfonated hydrocarbon PEMs have been investigated as alternatives. [5][6][7][8] In general, the costs of hydrocarbon PEMs are lower than those of Nafion because hydrocarbon PEMs can be polymerized under mild conditions using cheap monomers.…”

Section: Introductionmentioning

confidence: 99%

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Phase Separation and Water Channel Formation in Sulfonated Block Copolyimide

et al. 2010

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Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Questions? Contact the NRC Publications Archive team atPublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. NRC Publications Record / Notice d'Archives des publications de CNRC:http://nparc.cisti-icist.nrc-cnrc.gc.ca/eng/view/object/?id=8d7de2db-497c-4114-a4b2-c67045bf8c68 http://nparc.cisti-icist.nrc-cnrc.gc.ca/fra/voir/objet/?id=8d7de2db-497c-4114-a4b2-c67045bf8c68 We compared experimental and simulated data to investigate the phase separation and water channel formation of proton exchange membranes (PEMs) for fuel cell. Sulfonated block copolyimides (SPIs) were adopted as model polymers for experiments and simulations, and Nafion was used as a reference. Nafion and SPIs were observed to have different microscopic structures such as constituent atoms, backbone rigidity, and the locations of sulfonic acid groups, all of which significantly affect phenomenological properties at the macroscopic level such as density, water uptake, and proton conductivity. In particular, SPIs show much weaker microphase separation than Nafion, mainly due to the lower mobility of sulfonic acid groups and the existence of acceptable sites for hydrogen bonding even in hydrophobic segments, which impedes water channel formation for proton transport. As a result, the phase separation behavior and the resulting water channel formation are the major factors affecting macroscopic properties of PEMs such as water uptake and proton transport. Phase Separation and Water Channel Formation in Sulfonated Block

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“…Most investigations of these copolymers are concerned with the synthesis and characterization of the basic properties relative to the proton conductivity. There is less systematic study showing relationships between structure and single cell performance [4,7]. The aim of this communication is to report the DMFC and PEMFC performance of new homopolymerlike sulfonated phenylated PEKs and diphenylated PEKs that were made by a rapid, mild and controllable post-sulfonation (Scheme 1).…”

Section: Introductionmentioning

confidence: 99%

Homopolymer-like sulfonated phenyl- and diphenyl-poly(arylene ether ketone)s for fuel cell applications

Liu

Kim

et al. 2008

Journal of Power Sources

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/npsi/ctrl?action=rtdoc&an=1884312&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=1884312&lang=fr READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE.http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Questions?Contact the NRC Publications Archive team at PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://doi.org/10.1016/j.jpowsour. 2008.08.088 Journal of Power Sources, 185, 2, pp. 899-903, 2008-12-01 Journal of Power Sources 185 (2008) Two series of homopolymer-like sulfonated aromatic poly(ether ketone)s (SPEKs) were readily prepared and post-sulfonated using mild conditions. The homopolymer-like SPEKs exhibited advantages in synthesis and physical properties over typical post-sulfonated random copolymers, such as rapid and mild sulfonation conditions, high molecular weights, site specificity and control over IEC, as well as an excellent combination of dimensional swelling stability, low methanol permeability and high proton conductivity. These beneficial membrane properties are reflected in the attractive direct methanol fuel cell (DMFC) and polymer electrolyte membrane fuel cell (PEMFC) performance of these homopolymer-like SPEKs as compared with typical random copolymer SPEKs. Crown

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Sulfonated Poly(aryl ether)‐Type Polymers as Proton Exchange Membranes: Synthesis and Performance

Cited by 9 publications

References 93 publications

Sulfonated hydrocarbon membranes for medium-temperature and low-humidity proton exchange membrane fuel cells (PEMFCs)

Sulfonated hydrocarbon membranes for medium-temperature and low-humidity proton exchange membrane fuel cells (PEMFCs)

Phase Separation and Water Channel Formation in Sulfonated Block Copolyimide

Homopolymer-like sulfonated phenyl- and diphenyl-poly(arylene ether ketone)s for fuel cell applications

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