Anion exchange membranes based on poly (styrene‐b‐(ethylene‐co‐butylene)‐b‐styrene) grafted poly (2,6‐dimethyl‐1,4‐phenylene oxide)

Liu, Rui; Nie, Yiwen; Chen, Junjie; Shen, Chunhui; Gao, Shanjun

doi:10.1002/app.53579

Cited by 5 publications

(2 citation statements)

References 38 publications

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“…In addition, the alkali stability of the SEBS-C6-MDA-TPIP x membranes was compared with that of other SEBS-based AEMs, ,,,,,− and the results are shown in Table . Based on similar OH – conductivity (σ), Ts, and Eb, the alkali resistance of the SEBS-C6-MDA-TPIP x membrane is superior to that of most SEBS-based AEMs.…”

Section: Resultsmentioning

confidence: 99%

Poly(styrene-b(ethylene-co-butylene)-b-styrene) Cross-Linked Anion Exchange Membranes Grafted with Caged Double Cations and Poly(m-triphenylene-piperidine)

Wang,

Kong,

Zhang

et al. 2024

ACS Appl. Polym. Mater.

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In order to solve the problems of high swelling rate and poor mechanical properties caused by excessive water uptake of poly(styrene-b-(ethylene-co butene)-b-styrene) (SEBS)-based anion exchange membranes (AEMs), a series of SEBS-C6-MDA-TPIPx membranes with a controllable cross-linking degree were prepared by cross-linking poly(m-triphenylene piperidinium) (TPIP) with SEBS grafted with 1-methyl-1,4-diazabicyclo [2.2.2] octane-1-ammonium iodide. The results showed that with the increase of TPIP content, the swelling of SEBS-C6-MDA-TPIPx membranes decreased, the chemical stability and mechanical properties increased remarkably, and all membranes possessed obvious hydrophilic/ hydrophobic microphase separation structures. Among them, the SEBS-C6-MDA-TPIP15% membrane has excellent mechanical properties and high ionic conductivity (86.76 mS cm −1 at 80 °C), and the ionic conductivity only decreased by 20.81% after soaking in a 2 M NaOH solution at 80 °C for 2200 h. H 2 /O 2 fuel cells assembled from the SEBS-C6-MDA-TPIP15% membrane have a maximized power density of 221 mW cm −2 at 80 °C.

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Section: Resultsmentioning

confidence: 99%

Poly(styrene-b(ethylene-co-butylene)-b-styrene) Cross-Linked Anion Exchange Membranes Grafted with Caged Double Cations and Poly(m-triphenylene-piperidine)

Wang,

Kong,

Zhang

et al. 2024

ACS Appl. Polym. Mater.

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“…The cation groups include quaternary ammonium (QA), benzyl trimethylammonium (BTMA), imidazolium, phosphonium, piperidinium(pip), quaternary piperidinium (Qpip), pyridinium, and metal-based cations, etc. [61][62][63][64] The polymer backbones include Poly(vinyl alcohol) (PVA), [65] polyethylene (PE), [66] poly(norbornene) (GT), [67] polystyrene (SEBS), [68] polysulfones (PS), [69] polyethersulfone (PES), [70] poly(ether ether ketone) (PEEK), [71] poly(terphenyl) (PTP), [72] poly(benzimidazoles) (PBI), [73] poly(fluorenes) (FLN), [74] ethylene tetrafluoroethylene (ETFE), [75] and polytetrafluoroethylene (PTFE), [76] crown ether, [77] as shown in Figure 5(a). The membrane conducts anions based on interactions between the cation functional groups and the negatively charged anions.…”

Section: Anion Exchange Membranementioning

confidence: 99%

Recent Development of Anion Exchange Membrane Fuel Cells and Performance Optimization Strategies: A Review

Chan

2023

The Chemical Record

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Anion exchange membrane fuel cells (AEMFCs) are the most promising low‐temperature fuel cells and have received extensive attention. Compared to PEMFCs, the cost per unit of power can be significantly reduced for AEMFCs because, in theory, they allow the usage of non‐precious metal catalysts and low‐cost cell components. Owing to the development of advanced materials and performance improvement strategies, AEMFCs have achieved new records in both initial performance and durability. However, the high performance currently achieved is contingent on certain conditions, e. g., high Pt loading, large gas flowrates, and operation in pure O2, which are far from practical applications. Therefore, the transition to commercially relevant performance and durability is the next goal of AEMFCs. This paper reviews the performance data of H2‐fueled AEMFCs since 2010 and summarizes possible performance optimization schemes, which can provide useful insights for developing next‐generation AEMFCs.

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Tandem one‐pot synthesis of block copolymers for anion exchange membranes

Lai,

Wang,

Lin

et al. 2024

J of Applied Polymer Sci

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The anion exchange membrane (AEM) suffered from poor mechanical properties and low ionic conductivity in fuel cells. Herein, a series of novel block fluorene‐contained poly(arylene ether ketone)s backbones are synthesized by a tandem one‐pot process and then grafted with alkyl chains to form comb‐shaped structure for preparing AEMs. The one‐pot synthesis of block copolymer avoids the multiple purifications of oligomers. The membranes' structure–property relationship is studied by changing the ratios of hydrophilic and hydrophobic segments. The designed comb‐shaped structures grafted on fluorene‐containing block backbones can widen the space between chains and form clear microphase separation patterns, as determined by atomic force microscope (AFM) and small angle x‐ray scattering (SAXS). Hence, resulting AEMs have a high ionic conductivity (117.4 mS cm−1, 80°C). Meanwhile, they also present low swelling rate (SR) from 12.76% to 18.51% at 30°C, 16.84% to 24.36% at 60°C, and 18.33% to 25.81% at 80°C. In addition, excellent mechanical properties, that is, an elongation at break of 29.63% and a tensile strength of 28.72 MPa, are achieved and showed the promise of as‐fabricated AEMs in fuel cell applications.

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Anion exchange membranes based on poly (styrene‐b‐(ethylene‐co‐butylene)‐b‐styrene) grafted poly (2,6‐dimethyl‐1,4‐phenylene oxide)

Cited by 5 publications

References 38 publications

Poly(styrene-b(ethylene-co-butylene)-b-styrene) Cross-Linked Anion Exchange Membranes Grafted with Caged Double Cations and Poly(m-triphenylene-piperidine)

Poly(styrene-b(ethylene-co-butylene)-b-styrene) Cross-Linked Anion Exchange Membranes Grafted with Caged Double Cations and Poly(m-triphenylene-piperidine)

Recent Development of Anion Exchange Membrane Fuel Cells and Performance Optimization Strategies: A Review

Tandem one‐pot synthesis of block copolymers for anion exchange membranes

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