Synthesis and Characterization of Poly(phenylene)-Based Anion Exchange Membranes for Alkaline Fuel Cells

Hibbs, Michael; Fujimoto, Cy; Cornelius, Chris J.

doi:10.1021/ma901538c

Cited by 430 publications

(300 citation statements)

References 29 publications

Supporting

Mentioning

291

Contrasting

Unclassified

Order By: Relevance

“…18,23 Benzyl trimethyl ammonium (BTMA + ) tethered poly(phenylene) ionomers (ATM-PP) were synthesized by an irreversible Diels-Alder reaction. 24,25 The chemical structures of M-Nafion-FA-TMG and ATM-PP are shown in Figure 1.…”

Section: Methodsmentioning

confidence: 99%

A Microelectrode Study of Interfacial Reactions at the Platinum-Alkaline Polymer Interface

Yim

Chung

Chlistunoff

et al. 2015

J. Electrochem. Soc.

View full text Add to dashboard Cite

Hydrogen oxidation (HOR) and oxygen reduction (ORR) reactions at the platinum/alkaline ionomer interface were investigated using two different alkaline polymer electrolytes, i.e., benzyl-trimethyl ammonium tethered poly(phenylene) (ATM-PP) and phenylpentamethyl guanidinium tethered perfluorinated polymer (M-Nafion-FA-TMG). Substantial inhibition of HOR was taking place at the platinum-ATM-PP interface due to the possible cationic group adsorption of ATM-PP, whereas the reaction was virtually unaffected at the platinum-M-Nafion-FA-TMG interface after high anodic potential preconditioning. Moreover, the apparent ORR activity of platinum coated with M-Nafion-FA-TMG was found higher than that in 0.1 M tetra methyl guanidinium solution. In addition, the oxygen permeability of M-Nafion-FA-TMG was found to be ∼2.5 times higher than that of ATM-PP. The above properties of the perfluorinated polymer make it a very promising ionomeric binder for the use in both anode and cathode of alkaline membrane fuel cells. Alkaline membrane fuel cells (AMFCs) have drawn tremendous attention because they have the potential to convert hydrogen fuel to electricity without using precious metal catalysts in the electrodes. 1,2However, the current performances of AMFCs using non-precious or even precious metal catalysts are inferior to those of proton exchange membrane fuel cell (PEMFC) counterparts.3 The inferior performance of AMFCs have been explained by the low hydroxide mobility in anion exchange membranes, 4,5 carbonate/bicarbonate formation, [6][7][8] slow hydrogen oxidation reaction (HOR) kinetics, 9,10 and poor water management.11-13 The differences in performance between AMFCs and PEMFCs are also largely derived from the polymer electrolytes employed in the electrodes that provide different environments for electrochemical reactions and material diffusion.The effects of cation-tethered alkaline polymer electrolytes on AMFC performance have been investigated by several research groups. Varcoe et al. first used a hydroxide conducting ionomer in preparation of alkali metal-cation-free AMFC electrodes.14 There was a substantial increase in the peak power density of AMFCs (55 vs. 1.6 mW cm −2 ) by adding quaternized poly(vinylbenzyl chloride) to the catalyst layers and further improved AMFC performance was reported later using better ionomer dispersion technology, 15 i.e., the peak power density of 185 mW cm −2 . However, the improved AMFC performance was still inferior to the state-of-the-art PEMFC performance. They suggested that relatively low gas permeation by ionomer binder may be the reason for the inferior performance. Researchers from Tokuyama Corporation reported a series of hydroxide conducting ionomers for AMFC applications.16,17 They found that the peak power density of the AMFC performance increased from 22 mW cm −2 to 296 mW cm −2 , as the ion exchange capacity of their hydrocarbon ionomers increased from 0.7 to 1.8 meq. g −1 . They suggested the ionic conductivity of the ionomer is the major factor contributing to the p...

show abstract

Section: Methodsmentioning

confidence: 99%

A Microelectrode Study of Interfacial Reactions at the Platinum-Alkaline Polymer Interface

Yim

Chung

Chlistunoff

et al. 2015

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“…Recently, a number of new polymers functionalized with 50 quaternary ammonium groups, based on poly(phenylene), 12 poly(styrene)s, 13, 14 poly(ether sulfone), 15−19 poly(arylene ether)s 20 and poly(ether ether ketone)s (PEEKs), 21 were synthesized from monomers or by polymer modifications. These materials have shown some promising results for use in anion exchange 55 membranes fuel cells (AEMFCs).…”

Section: −11mentioning

confidence: 99%

Naphthalene-based poly(arylene ether ketone) anion exchange membranes

Liu

Shen

et al. 2013

J. Mater. Chem. A

View full text Add to dashboard Cite

/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/10.1039/c3ta10355bJournal of Materials Chemistry A, 1, 21, pp. 6481-6488, 2013-04-04 Naphthalene-based poly(arylene ether ketone) anion exchange membranes Liu, Zhuang; Li, Xiaobai; Shen, Kunzhi; Feng, Pengju; Zhang, Yinan; Xu, Xu; Hu, Wei; Jiang, Zhenhua; Liu, Baijun; Guiver, Michael D. Naphthalene-based poly(arylene ether ketone)s were obtained through a three-step process involving polymerization of methylated polymers, followed by bromination and derivatization with a diquaternaryammonium group. The hydroxide conductivities of the anion exchange membranes were above 10 −2 S cm −1 at room temperature and the membrane with an IEC = 1.46 mequiv. g −1 attained an ion conductivity 10 of 7.4 × 10 −2 S cm −1 at 100 oC, which is higher than many reported results. The membrane series had low water uptake and excellent dimensional stability, even at the highest IEC values. In addition, the membranes were insoluble in organic solvent and concentrated alkaline solution for many days, even under heating, suggesting their excellent stability. These combined data suggest that the membranes have potential for anion exchange membranes for fuel cells applications.

show abstract

“…3,[14][15][16][17] However, in order to introduce such QA groups, extremely volatile reagents, such as trimethylamine (TMA), are employed, resulting in an environmentally unfriendly synthetic process. The low alkali thermochemical stabilities of QA-type AAEMs limit their long-term durability of APEFCs.…”

Section: Introductionmentioning

confidence: 99%

Development of imidazolium-type alkaline anion exchange membranes for fuel cell application

Jin

Varcoe

et al. 2012

Journal of Membrane Science

217

146

View full text Add to dashboard Cite

Synthesis and Characterization of Poly(phenylene)-Based Anion Exchange Membranes for Alkaline Fuel Cells

Cited by 430 publications

References 29 publications

A Microelectrode Study of Interfacial Reactions at the Platinum-Alkaline Polymer Interface

A Microelectrode Study of Interfacial Reactions at the Platinum-Alkaline Polymer Interface

Naphthalene-based poly(arylene ether ketone) anion exchange membranes

Development of imidazolium-type alkaline anion exchange membranes for fuel cell application

Contact Info

Product

Resources

About