Highly Conductive Aromatic Ionomers with Perfluorosulfonic Acid Side Chains for Elevated Temperature Fuel Cells

Xu, Kui; Oh, Hyukkeun; Hickner, Michael A.; Wang, Qing

doi:10.1021/ma201188e

Cited by 49 publications

(38 citation statements)

References 25 publications

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“…Apart from Ullmann coupling, another synthetic approach using dehalogenation coupling was reported by Wang and coworkers 102 to prepare a fluorinated aromatic poly(arylene ether) 27 with pendent perfluoroalkyl sulfonic acid groups, as shown in Scheme 6. High proton diffusion coefficients were observed due to the hydrophilic nanochannels, as confirmed by TEM images.…”

Section: Proton Exchange Membranesmentioning

confidence: 99%

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Ion Transport by Nanochannels in Ion-Containing Aromatic Copolymers

2014

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/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en 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://dx.doi.org/10.1021/ma402254h Macromolecules, 47, 7, pp. 2175Macromolecules, 47, 7, pp. -2198Macromolecules, 47, 7, pp. , 2014 Ion transport by nanochannels in ion-containing aromatic copolymers Li, Nanwen; Guiver, Michael D. Ion Transport by Nanochannels in Ion-Containing Aromatic CopolymersThe search for the next generation of highly ion-conducting polymer electrolyte membranes has been a subject of intense research because of their potential applications in energy storage and transformation devices, such as fuel cells, vanadium flow batteries, membrane-based artificial photosynthesis, water electrolysis, or water treatment processes such as electrodialysis desalination. Nanochannels that contain ionic groups, through which "hydrated" ions can pass, are believed to be of key importance for efficient ion transport in polymer electrolytes membranes. In this Perspective, we present an overview of the approaches to induce ion-conducting nanochannel formation by selfassembly, using polymer architecture such as block or combshaped copolymers. The transport properties of ion-containing aromatic copolymers are examined to obtain an insight into the fundamental behavior of these materials, which are targeted toward applications in fuel cells and other electrochemical devices. Challenges in obtaining well-defined nanochannel morphologies, and possible strategies to improve transport properties in aromatic copolymers having structures with the potential to withstand operation in electrochemical/chemical devices, are discussed. Opportunities for the application of ion-containing aromatic copolymer membranes in fuel cells, vanadium flow batteries, membrane-based artificial photosynthesis, electrolysis, and electrodialysis are also reviewed. Research needs for further improvements in ionic conductivity and durability, and their applications are identified.

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Section: Proton Exchange Membranesmentioning

confidence: 99%

“…Wang and co-workers 102 reported the hydrogen/air fuel cell performance of poly(arylene ether) 27 with superacid groups at 120°C. The maximum power density and current density at 0.5 V of 27 were 30% and 43% higher, respectively, than those of Nafion.…”

Section: Applicationsmentioning

confidence: 99%

Ion Transport by Nanochannels in Ion-Containing Aromatic Copolymers

2014

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“…For comparison, the structure of the sulfonated copolymer with two pendent phenyl sulfonic acid groups is presented in Scheme 5 (1-10). The performance of the membranes was evaluated by generating a trade-off plot containing both relative methanol permeability and relative proton conductivity (57,58).…”

Section: Sulfonated Fluorinated Random Copoly(arylene Ether)smentioning

confidence: 99%

Sulfonated fluorinated-aromatic polymers as proton exchange membranes

Ghosh¹,

Banerjee

2014

E-Polymers

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Abstract:In recent years, extensive research on the preparation and properties of proton exchange membranes (PEMs) has been realized. This article focusses on the recent studies on new PEM materials based on aromatic hydrocarbon polymers with sulfonated groups as hydrophilic domains and fluorinated groups as hydrophobic domains as alternatives to conventional perfluorinated polymers. It is necessary to improve the proton conductivity especially under low-humidity conditions and at high operating temperatures to break through the current aromatic PEM system. Hence, there is a need to develop new high-conductivity fuel cell ionomers with improved thermal, chemical, and electrochemical stability by designing a suitable polymer structure for PEM application.

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“…Therefore, SAPs with ÀSO 3 H attached to a pendent side chain are expected to be more stable to heat, hydrolysis, and oxidation than main-chain-sulfonated analogues. [54,55] Based on this idea, Liu et al designed and synthe- Figure 1. Thermogravimetric analysis of untreated SPPSU, SPPSU treated at 170 8C for 48 h, and SPPSU treated at 170 8C for 64 h. [36] sized di(4-sulfonic acid) phenylated PESs.…”

Section: Optimization Of the Position Of So 3 Hmentioning

confidence: 99%

Durability of Sulfonated Aromatic Polymers for Proton‐Exchange‐Membrane Fuel Cells

2011

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As a key component of proton-exchange-membrane fuel cells (PEMFCs), proton-exchange membranes (PEMs) must continuously withstand very harsh environments during long-term fuel cell operations. With the coming commercialization of PEMFCs, investigations into the durability and degradation of PEMs are becoming more and more urgent and interesting. Herein, various recent attempts and achievements to improve the durability of sulfonated aromatic polymers (SAPs) are reviewed and some further developments are predicted. Extensive investigations into inexpensive SAPs as alternative electrolyte membranes include modification of available polymer materials; design, synthesis, and optimization of new macromolecules; durability testing; and exploring the degradation mechanisms.

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Highly Conductive Aromatic Ionomers with Perfluorosulfonic Acid Side Chains for Elevated Temperature Fuel Cells

Cited by 49 publications

References 25 publications

Ion Transport by Nanochannels in Ion-Containing Aromatic Copolymers

Ion Transport by Nanochannels in Ion-Containing Aromatic Copolymers

Sulfonated fluorinated-aromatic polymers as proton exchange membranes

Durability of Sulfonated Aromatic Polymers for Proton‐Exchange‐Membrane Fuel Cells

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