Pyridinium-functionalized crosslinked anion exchange membrane based on multication side chain tethered elastomeric triblock poly(styrene-b-(ethylene-co-butylene)-b-styrene)

Zhang, Shuai; Zhu, Xiuling; Jin, Cuihong; Hu, Huilan

doi:10.1016/j.reactfunctpolym.2019.02.012

Cited by 34 publications

(12 citation statements)

References 56 publications

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“…This method was already adopted by several studies to characterize AEMs (see for instance, Varcoe et al . and others ,,− ), and recently by Holdcroft et al . who showed visual effects of the anion-exchange process.…”

mentioning

confidence: 75%

Practical ex-Situ Technique To Measure the Chemical Stability of Anion-Exchange Membranes under Conditions Simulating the Fuel Cell Environment

Müller

Zhegur

Krewer

et al. 2020

ACS Materials Lett.

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Anion-exchange membrane (AEM) degradation during fuel cell operation represents the main challenge that hampers the implementation of AEM fuel cells (AEMFCs). Reported degradation values of AEMs are difficult to reproduce as no standard methods are used. The present use of different techniques based on exposure of membranes to aqueous KOH solutions under different conditions and measuring different outputs during time does not allow for a reliable and meaningful comparison of reported degradation data of different AEMs. In this study, we present a practical and reproducible ex-situ technique to measure AEM degradation in conditions that mimic an operando fuel cell environment. In this novel technique, we measure the change of the true hydroxide conductivity of the AEM over time, while exposing it to different relative humidity conditions. The technique does not make use of liquid alkaline solution, thus simulating real fuel cell conditions and providing a good baseline for comparative degradation studies.

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mentioning

confidence: 75%

Practical ex-Situ Technique To Measure the Chemical Stability of Anion-Exchange Membranes under Conditions Simulating the Fuel Cell Environment

Müller

Zhegur

Krewer

et al. 2020

ACS Materials Lett.

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“…Considering the importance of the hydroxide ion conduction and long-term stability of AEMs, especially in alkaline anionexchange membrane fuel cells (AAEMFCs), Zhu et al developed elastomeric triblock copolymers of ethylene with styrene, butylene, and 4,4-bipyridine. 105 The 4,4-bipyridine played the cross-linker and functional group role for hydroxide ion transportation in the membrane. The cross-linked terpolymers showed high mechanical properties, alkaline and thermal stability, and a maximum hydroxide conductivity of almost 70 mS cm −1 at temperatures from 30 to 80 °C.…”

Section: Anion Exchange Membranes (Aems)mentioning

confidence: 99%

“…Considering the importance of the hydroxide ion conduction and long-term stability of AEMs, especially in alkaline anion-exchange membrane fuel cells (AAEMFCs), Zhu et al developed elastomeric triblock copolymers of ethylene with styrene, butylene, and 4,4-bipyridine . The 4,4-bipyridine played the cross-linker and functional group role for hydroxide ion transportation in the membrane.…”

Section: Energy Storage Applicationsmentioning

confidence: 99%

Tailor-Made Functional Polyolefins of Complex Architectures: Recent Advances, Applications, and Prospects

2022

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Polyolefins play a crucial role in the polymer industry because of their low-cost monomers and well-established production processes. Recent years have witnessed tremendous progress in direct and tandem copolymerization strategies that provide an opportunity of developing polyolefins bearing polar groups with distinctive architectures and properties. In this perspective, we first highlight new routes for the proficient synthesis of tailor-made functional polyolefins and briefly discuss their designing tactics. Then, we attempt to categorize these, recently appeared in the literature, innovative functional polyolefins on the basis of their applications. The prospected future applications of polar olefin copolymers include biomedical materials, catalysts, energy storage devices, and conductive polymers, which open up new arenas and paradigms for academic research and industrial products development. Critical issues concerning intelligent functional polyolefins and green chemistry are discussed, too.

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“…The SEBS cross-linked membranes in many studies ,,− have limited functional sites due to fewer polystyrene repeating units in the skeleton, and the ion conductivity of the SEBS cross-linked membranes is generally low. Polyarene skeletons have attracted the attention of alkaline membrane researchers due to their more functionalized sites. − However, the rigid structure of polyarene leads to poor membrane-forming properties, and the formed membranes are brittle.…”

Section: Introductionmentioning

confidence: 99%

Poly(terphenylene) and Bromohexylated Polystyrene-b-poly(ethylene-co-butene)-b-polystyrene Cross-Linked Anion Exchange Membrane with Excellent Comprehensive Performance

Wang

Sang

et al. 2022

Energy Fuels

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Using a quaternization reaction to cross-link the soft bromohexylated polystyrene-b-poly(ethylene-co-butene)-b-polystyrene (SEBS-C6-Br) skeleton with the more brittle quaternized poly(triphenylpiperidine) skeleton (Qr-m-PTP), we prepare a nQr-m-PTP-c-SEBS-C6 composite membrane. The research results show that the conductivity of the 0.68Qr-m-PTP-c-SEBS-C6 membrane can reach 91.8 mS/cm at 80 °C, and the OH– conductivity only decreases by 5.18% after immersing in 4 M NaOH for 1400 h. Both the dimensional stability and mechanical properties have been enhanced. The microphase separation channels after the two frameworks are cross-linked and promote the ion conductivity of the anion exchange membrane, and the high degree of cross-linking also has a good inhibitory effect on the swelling of the membrane. This kind of cross-linked membrane is useful in alkaline membrane fuel cells.

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Pyridinium-functionalized crosslinked anion exchange membrane based on multication side chain tethered elastomeric triblock poly(styrene-b-(ethylene-co-butylene)-b-styrene)

Cited by 34 publications

References 56 publications

Practical ex-Situ Technique To Measure the Chemical Stability of Anion-Exchange Membranes under Conditions Simulating the Fuel Cell Environment

Practical ex-Situ Technique To Measure the Chemical Stability of Anion-Exchange Membranes under Conditions Simulating the Fuel Cell Environment

Tailor-Made Functional Polyolefins of Complex Architectures: Recent Advances, Applications, and Prospects

Poly(terphenylene) and Bromohexylated Polystyrene-b-poly(ethylene-co-butene)-b-polystyrene Cross-Linked Anion Exchange Membrane with Excellent Comprehensive Performance

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