A strategy to design quaternized poly(2,6-dimethyl-1,4-phenylene oxide) anion exchange membranes by atom transfer radical coupling

Chu, Xiaomeng; Miao, Shasha; Zhou, Andi; Liu, Shaojie; Liu, Lei; Li, Nanwen

doi:10.1016/j.memsci.2022.120397

Cited by 19 publications

(10 citation statements)

References 51 publications

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“…In addition, the rise of temperature will lead to the instability of water uptake as well as swelling ratio, so it is necessary to ensure an appropriate increase in water uptake as well as swelling ratio and ionic conductivity. 46 This shows that the measured IEC is close to the theoretical IEC and PTI-N-100 has the highest IEC value, which is attributable to the fact that the more side chains effectively increase the number of anion transport sites. 47 Accordingly, a higher IEC leads to a higher concentration of hydrophilic cationic groups, and an increase of hydrophilic areas leads to a corresponding increase in water uptake.…”

Section: Micromorphologysupporting

confidence: 57%

Synergistic functionalization of poly(p-terphenyl isatin) anion exchange membrane with quaternary ammonium and piperidine cations for fuel cells

Gu,

Zhang,

Wang

et al. 2024

Ind. Chem. Mater.

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Section: Micromorphologysupporting

confidence: 57%

Synergistic functionalization of poly(p-terphenyl isatin) anion exchange membrane with quaternary ammonium and piperidine cations for fuel cells

Gu,

Zhang,

Wang

et al. 2024

Ind. Chem. Mater.

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“…Because advanced AEMs have been reported in recent years, the peak power density of AEMFCs has exceeded 1000 mW/cm 2 , such as fluoropoly(olefin)-based AEMs of Hickner’s group, QAPPT-based AEMs of Zhuang’s group, PAP-based AEMs of Yan’s group, PDTP-basd AEMs of Lee’s group, and norbornene-based AEMs of Kohl’s group . However, as shown in Table , sc DQPPO-40 shows competitive fuel cell performance in PPO-based AEMs. ,,,,− In fact, in addition to AEMs, there are many other factors that affect AEMFCs performance, such as MEA preparation technology and fuel cell operation conditions. Following work will be focused on how to improve the performance and long-term stability of AEMFCs.…”

Section: Resultsmentioning

confidence: 99%

Poly(phenylene oxide)-Based Anion Exchange Membranes Having Linear Cross-Linkers or Star Cross-Linkers

Han

Zhang

Kang

et al. 2022

ACS Appl. Energy Mater.

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Linear cross-linked and star cross-linked anion exchange membranes (AEMs) are reported in this work, namely, lcQPPO (linear cross-linked quaternized poly(2,4-dimethyl-1,4-phenylene oxide) (PPO)) and scDQPPO (star cross-linked quaternized PPO) . Compared with original quarternized PPO (QPPO), cross-linked AEMs show a restrained swelling degree. But, due to the hindrance of a cross-linking polymer matrix, lcQPPO membranes show decreased ionic conductivity. For scDQPPO, its wide and connective ion channels are beneficial to the conduction of OH–, exhibiting increased ionic conductivity. Besides, the aggregated and cross-linked polymer networks in scDQPPO enhance the chemical stability and mechanical properties of the AEMs. Specifically, for scDQPPO-40, a high OH– conductivity of 100.7 mS cm–1 and a low swelling degree of 20.7% are achieved at 80 °C. The tensile strength and elongation at break of wet scDQPPO-40 at 25 °C are 16.7 MPa and 18.0%. After immersing in 1 M NaOH at 80 °C for 30 days, the loss of ionic conductivity and weight for scDQPPO-40 is 24.2 and 14.8%, with the degradation of tensile strength and elongation at break of 22.2% and 26.7%, respectively. On the basis of the membrane, a fuel cell performance of 0.577 W cm–2 is demonstrated at 60 °C, while, for QPPO-40 and lcQPPO-60, their fuel cell peak power densities are only 0.250 and 0.215 W cm–2.

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“…For the membranes, the CO2, N2, and CH4 gases had diffusion coefficient of 25%, 14%, and 9%, respectively. The membrane systems based on poly(2,6-dimethyl-1,4-phenylene oxide) have also been researched [109][110][111]. Rea and colleagues [112] developed 0.3-15 wt.% graphene filled poly(2,6dimethyl-1,4-phenylene oxide) membranes.…”

Section: Graphene and Nanocomposites In Gas Separationmentioning

confidence: 99%

Graphene in gas separation membranes—State-of-the-art and potential spoors

Kausar,

Ahmad

2024

Charact. Appl. Nanomater.

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Graphene and derivatives have been frequently used to form advanced nanocomposites. A very significant utilization of polymer/graphene nanocomposite was found in the membrane sector. The up-to-date overview essentially highpoints the design, features, and advanced functions of graphene nanocomposite membranes towards gas separations. In this concern, pristine thin layer graphene as well as graphene nanocomposites with poly(dimethyl siloxane), polysulfone, poly(methyl methacrylate), polyimide, and other matrices have been perceived as gas separation membranes. In these membranes, the graphene dispersion and interaction with polymers through applying the appropriate processing techniques have led to optimum porosity, pore sizes, and pore distribution, i.e., suitable for selective separation of gaseous molecules. Consequently, the graphene derived nanocomposites brought about numerous revolutions in high performance gas separation membranes. The structural diversity of polymer/graphene nanocomposites has facilitated the membrane selective separation, permeation, and barrier processes especially in the separation of desired gaseous molecules, ions, and contaminants. Future research on the innovative nanoporous graphene-based membrane can overcome design/performance related challenging factors for technical utilizations.

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A strategy to design quaternized poly(2,6-dimethyl-1,4-phenylene oxide) anion exchange membranes by atom transfer radical coupling

Cited by 19 publications

References 51 publications

Synergistic functionalization of poly(p-terphenyl isatin) anion exchange membrane with quaternary ammonium and piperidine cations for fuel cells

Synergistic functionalization of poly(p-terphenyl isatin) anion exchange membrane with quaternary ammonium and piperidine cations for fuel cells

Poly(phenylene oxide)-Based Anion Exchange Membranes Having Linear Cross-Linkers or Star Cross-Linkers

Graphene in gas separation membranes—State-of-the-art and potential spoors

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