Preparation and characterization of organic-inorganic hybrid anion exchange membrane based on crown ether functionalized mesoporous SBA-NH2

Shang, Chenshi; Liu, Yingxi; Zeng, Xiangrui; Luo, Wan Jie; Wang, Lulu; Wang, Jilin

doi:10.1016/j.ijhydene.2022.02.137

Cited by 7 publications

(2 citation statements)

References 62 publications

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“…This result probably comes from its suitable microphase morphology as well as relatively high water uptake compared with the other two spirobiindane-based AEMs. The hydroxide conductivity of proposed AEMs and the ones reported in recent years ,,,,− ,,,,− are shown in Figure b. The spirobiindane-based AEMs exhibit superior OH – conductivity with relatively low IEC values indicating the highly effective ion conduction inside the prepared membranes.…”

Section: Resultsmentioning

confidence: 97%

Preparation of Random Polymers by Copolymerization of Rigid-Twisted Spirobiindane with Poly(aryl isatin) for High-Performance Anion Exchange Membranes

Chen,

Xu,

et al. 2023

ACS Appl. Polym. Mater.

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Designing the packing of polymer chains with reasonable fraction free volume (FFV) is regarded as an effective way to improve the conductivity of polymer-based membranes. We synthesize random polymers by copolymerization of bulky rigid-twisted spirobiindane, isatin, and one of the joint groups p-terphenyl, biphenyl, and 1,2-diphenylethane. The polycondensation reaction is catalyzed by trifluoromethanesulfonic acid. The introduced spirobiindane segments enlarge the distance of polymer chains and increase the FFV of the membrane. The formation of the microphase separation structure is evidenced according to the results of transmission electron microscopy and atomic force microscopy. As a result, a hydroxide conductivity of 126.7 mS cm–1 is achieved at 80 °C by the poly(spirobiindane diphenyl isatin)-based membrane (QP(SBP/BP)-20). The retention rates in hydroxide ion conductivity are 89.7 and 84.0% after soaking the membrane in 1 M KOH for 1152 h and in 4 M KOH for 628 h at 80 °C, respectively. The QP(SBP/BP)-20 membrane-based single-fuel cell exhibits an open-circuit voltage of 0.99 V and a peak power density of 744 mW cm–2 at 60 °C by fueling with humidified H2 and O2 with 0.05 MPa back pressure.

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Section: Resultsmentioning

confidence: 97%

Preparation of Random Polymers by Copolymerization of Rigid-Twisted Spirobiindane with Poly(aryl isatin) for High-Performance Anion Exchange Membranes

Chen,

Xu,

et al. 2023

ACS Appl. Polym. Mater.

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“…Recently, PVA, which had been crosslinked with glutaraldehyde and further composited with crown ether-functionalized amine-SBA and the membrane, was then activated by KOH. 323 Si, C, N, and O XPS peaks were obtained for the composite membrane, and following activation, a K peak could be seen. However, no significant structural changes were seen in the composite membrane before and after KOH activation.…”

Section: Characterization Of Aemsmentioning

confidence: 98%

Recent progress in anion exchange membranes (AEMs) in water electrolysis: synthesis, physio-chemical analysis, properties, and applications

Sriram,

Dhanabalan,

Ajeya

et al. 2023

J. Mater. Chem. A

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Research Challenges and Future Directions on Anion Exchange Membranes for Fuel Cells

Thomas,

Velayudham,

Singh,

et al. 2024

Alkaline Anion Exchange Membranes for Fuel Cells

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Preparation and characterization of organic-inorganic hybrid anion exchange membrane based on crown ether functionalized mesoporous SBA-NH2

Cited by 7 publications

References 62 publications

Preparation of Random Polymers by Copolymerization of Rigid-Twisted Spirobiindane with Poly(aryl isatin) for High-Performance Anion Exchange Membranes

Preparation of Random Polymers by Copolymerization of Rigid-Twisted Spirobiindane with Poly(aryl isatin) for High-Performance Anion Exchange Membranes

Recent progress in anion exchange membranes (AEMs) in water electrolysis: synthesis, physio-chemical analysis, properties, and applications

Research Challenges and Future Directions on Anion Exchange Membranes for Fuel Cells

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