Methylated polybenzimidazole and its application as a blend component in covalently cross-linked anion-exchange membranes for DMFC

Katzfuß, Anika; Poynton, Simon D.; Varcoe, John R.; Gogel, Viktor; Storr, U.; Kerres, Jochen

doi:10.1016/j.memsci.2014.04.004

Cited by 33 publications

(20 citation statements)

References 45 publications

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“…The commercial starting materials for this type of AEMs include PVA 88–97, SEBS 98, 99, CPP 100, 101, PEEK 102–104, PSU 107, 108, PES 109–115, PEI 116–118, PPO 119–127, PBI 128, and so on. Although some AEMs based on the functionalized polymers with aliphatic backbones (e.g.…”

Section: Aems For Aemfcsmentioning

confidence: 99%

Anion‐Exchange Membranes for Fuel Cells: Synthesis Strategies, Properties and Perspectives

et al. 2015

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This review focuses on various synthesis strategies of anion‐exchange membranes (AEMs) for fuel cells, diverse methodologies of AEM‐forming, together with relationship between structures and properties. AEMs are discussed from seven categories, including (1) AEMs derived from Nafion precursors with sulfonyl fluoride groups, which display excellent stability and well‐developed morphologies that similar to Nafion, but has potentially high costs. (2) AEMs prepared by grafting technologies, such as chemical grafting technique, ATRP technique, plasma grafting technique and radiation grafting technique. (3) AEMs based on functionalized commercial polymers, including PVA, SEBS, CPP, PEEK, PES, PEI, PPO, and so on. (4) AEMs prepared by newly‐synthesized polymers, in which the most interesting approach is to synthesize alkaline multi‐block copolymers with enough long hydrophilic/hydrophobic blocks. (5) AEMs containing heterogeneous composition, which mainly prepared by blending and sol‐gel methods, reinforced or pore‐filling AEMs and IPN or s‐IPN. (6) AEMs with functional groups different from quaternary ammonium, which includes the studies of new type of AEMs with highly chemical stability in alkaline solution. (7) Hybrid membranes combining AEM with PEM, in which new configuration results in different performances. At last, conclusions and perspectives for the future researches of AEMs are presented.

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Section: Aems For Aemfcsmentioning

confidence: 99%

Anion‐Exchange Membranes for Fuel Cells: Synthesis Strategies, Properties and Perspectives

et al. 2015

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“…The obtained results revealed that the crosslinked membranes showed low swelling ratio and high thermal stability as well as hydroxide conductivity as compared with the non‐crosslinked ones. Brominated PPO and methylated PBI were also crosslinked with DABCO to prepare membranes showing good properties to be successfully used for fuel cells applications.…”

Section: Introductionmentioning

confidence: 99%

DABCO-functionalized polysulfones as anion-exchange membranes for fuel cell applications: Effect of crosslinking

Pérez‐Prior

Ureña

Tannenberg

et al. 2017

J. Polym. Sci. Part B: Polym. Phys.

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A series of DABCO-functionalized polysulfones were synthesized and characterized. The effect that crosslinking has on the membrane properties containing different degrees of functionalization was evaluated. These polymers showed good thermal stability below the fuel cell operation temperature, T < 100 8C, reflected by the T OD , T FD , and thermal durability. The water uptake increased as the percentage of DABCO groups increased and the crosslinked membranes showed lower capacity to absorb water than the non-crosslinked ones favoring thus the dimensional stability of the first ones. Membranes in the chloride form containing low degree of functionalization exhibited the highest tensile strength values.The ionic conductivity of non-crosslinked membranes varied as a function of the functionalization degree until a value of around 100% achieving a maximum value at 86%. However, the crosslinked ones showed satisfactory ionic conductivities for values higher than 100%. The behavior of these polymeric materials in alkaline solutions revealed a great alkaline stability necessary to be used as solid electrolytes in fuel cells.

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“…Nevertheless, PBI can also be doped with KOH, achieving good performances when operating with hydrogen [19] or with alcohols [13,[20][21][22][23][24][25][26][27][28] as fuel. Furthermore, more recent studies have proposed the modification of the base polymer in order to improve its properties: (a) by providing anionic exchange groups by alkylating the polymer backbone [29][30][31], (b) by combining it with ionic liquids [32] and carbon nanotubes [27], and (c) using a thermal curing process [33], among the most important alternatives. Despite the very significant advances achieved, the classical PBI doped with KOH remains the primary candidate, especially for application in alcohol fuel cells.…”

Section: Introductionmentioning

confidence: 99%

KOH-doped polybenzimidazole for alkaline direct glycerol fuel cells

Couto

Linares

2015

Journal of Membrane Science

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Methylated polybenzimidazole and its application as a blend component in covalently cross-linked anion-exchange membranes for DMFC

Cited by 33 publications

References 45 publications

Anion‐Exchange Membranes for Fuel Cells: Synthesis Strategies, Properties and Perspectives

Anion‐Exchange Membranes for Fuel Cells: Synthesis Strategies, Properties and Perspectives

DABCO-functionalized polysulfones as anion-exchange membranes for fuel cell applications: Effect of crosslinking

KOH-doped polybenzimidazole for alkaline direct glycerol fuel cells

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