Enhanced proton conductivity of poly (arylene ether ketone sulfone) containing uneven sulfonic acid side chains by incorporating imidazole functionalized metal-organic framework

Chen, Xuan; Shi, Qingyuan; Xu, Jingmei; Ju, Mengchi; Ren, Jiahui; Zhao, Pengyun; Meng, L.; Lei, Jinxuan; Wang, Zhe

doi:10.1016/j.ijhydene.2021.12.087

Cited by 34 publications

(10 citation statements)

References 72 publications

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“…As an outcome of these issues, a substantial extent of research work has been pursued to develop alternate PEMs to eliminate drawbacks of Nafion while retaining enhanced proton conductivity, mechanical stability, and electrochemical properties. To date, various alternate sulfonated copolymers like polyimide, − poly(arylene ether sulfone), − poly(ether ether ketone), − polybenzimidazole, − and polytriazole − have been studied as PEM and those showed excellent mechanical and thermal stabilites. Among these, sulfonated copolytriazoles exhibited a synergistic combination of high proton conductivity, solubility, and thermal and electrochemical stabilities, making them a promising candidate for PEMFCs.…”

Section: Introductionmentioning

confidence: 99%

Sterically Hindered Pyridine-Linked Sulfonated Polytriazoles: Fabrication of Membranes and Investigation of Single Fuel Cell Performance

Roy

Ghanti

Ghosh

et al. 2022

ACS Appl. Polym. Mater.

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The semifluorinated sulfonated polytriazoles could integrate the benefits of both enhanced proton conductivity and chemical stability, which makes them one of the best choices for the fabrication of proton exchange membranes (PEM) for fuel cell applications. Herein we report a series of semifluorinated sulfonated polytriazoles, prepared from 2,2′-hindered pyridine functionalized nonsulfonated diazide (PYFAZ) and dialkyne (PYAK). The degrees of sulfonation of the polytriazoles (PYPYSH-XX) were varied by using DSSAZ as one of the sulfonated diazide comonomer in the polymer synthesis. The polymers showed a weight-average molecular weight of up to 450 800 g·mol–1, and their chemical structures were confirmed by FTIR and NMR techniques. The solution cast membranes showed phase-separated morphology with well-defined hydrophilic and hydrophobic domains. The membranes were mechanically robust (tensile strength up to 65.5 MPa, Young modulus of 2.37 GPa), were thermally stable, and exhibited a very high oxidative stability of 48 h (PYPYSH-70). The elongation at the break of the membranes was above 13%, somewhat lower in comparison to that of Nafion-117. Nevertheless, it was possible to fabricate a good quality electrode membrane assembly. The membranes show proton conduction in the range of 95–184 mS·cm–1 (80 °C) and a power density of 599–966 mW·cm–2 (H2/O2) depending on their degree of sulfonation. All these results indicate the potential use of these membranes in PEMFCs.

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Section: Introductionmentioning

confidence: 99%

Sterically Hindered Pyridine-Linked Sulfonated Polytriazoles: Fabrication of Membranes and Investigation of Single Fuel Cell Performance

Roy

Ghanti

Ghosh

et al. 2022

ACS Appl. Polym. Mater.

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“…Therefore, we conclude that imidazole was successfully introduced into the pores of ZrSQU in coordination with the Zr of ZrSQU, and the protons were transported along the internal surfaces and nanopores in the sample. The presence of quaternary-carbon signals located at 135.78, 128.85, and 121.04 ppm in the 13 C solid-state NMR spectrum of Im@ZrSQU-200 further proves the successful introduction of imidazole. – …”

Section: Resultsmentioning

confidence: 99%

Construction of Zr-Metal–Organic Frameworks-Based Composite Materials toward Anhydrous Proton Conduction and Photocatalytic CO₂ Reduction

Qu,

Fu,

Meng

et al. 2023

Inorg. Chem.

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Metal−organic frameworks constructed from Zr usually possess excellent chemical and physical stability. Therefore, they have become attractive platforms in various fields. In this work, two families of hybrid materials based on ZrSQU have been designed and synthesized, named Im@ZrSQU and Cu@ZrSQU, respectively. Im@ZrSQU was prepared through the impregnation method and employed for proton conduction. Im@ZrSQU exhibited terrific proton conduction performance in an anhydrous environment, with the highest proton conduction value of 3.6 × 10 −2 S cm −1 at 110 °C. In addition, Cu@ZrSQU was synthesized via the photoinduction method for the photoreduction of CO 2 , which successfully promoted the conversion of CO 2 into CO and achieved the CO generation rate of up to 12.4 μmol g −1 h −1 . The photocatalytic performance of Cu@ZrSQU is derived from the synergistic effect of Cu NPs and ZrSQU. Based on an in-depth study and discussion toward ZrSQU, we provide a versatile platform with applications in the field of proton conduction and photocatalysis, which will guide researchers in their further studies.

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“…This in-depth exploration elucidates the inuence of acid-base pairs, proton transport mechanisms, and phase separation structures on proton conductivity, offering new theoretical and experimental insights into enhancing proton conduction. Chen et al 99 developed a novel organic-inorganic hybrid membrane, S-C-SPAEKS/0.5% Im-MOF-801 exhibited the highest proton conductivity of 199 mS cm −1 . Compared to the pure S-C-SPAEKS membrane under identical conditions, the proton conductivity of the pure membrane was 1.5 times higher.…”

Section: Proton Conductivitymentioning

confidence: 99%

Recent advances in non-perfluorinated sulfonic acid proton exchange membranes in the energy field

Lv,

Li,

et al. 2024

J. Mater. Chem. A

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Enhanced proton conductivity of poly (arylene ether ketone sulfone) containing uneven sulfonic acid side chains by incorporating imidazole functionalized metal-organic framework

Cited by 34 publications

References 72 publications

Sterically Hindered Pyridine-Linked Sulfonated Polytriazoles: Fabrication of Membranes and Investigation of Single Fuel Cell Performance

Sterically Hindered Pyridine-Linked Sulfonated Polytriazoles: Fabrication of Membranes and Investigation of Single Fuel Cell Performance

Construction of Zr-Metal–Organic Frameworks-Based Composite Materials toward Anhydrous Proton Conduction and Photocatalytic CO₂ Reduction

Recent advances in non-perfluorinated sulfonic acid proton exchange membranes in the energy field

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Enhanced proton conductivity of poly (arylene ether ketone sulfone) containing uneven sulfonic acid side chains by incorporating imidazole functionalized metal-organic framework

Cited by 34 publications

References 72 publications

Sterically Hindered Pyridine-Linked Sulfonated Polytriazoles: Fabrication of Membranes and Investigation of Single Fuel Cell Performance

Sterically Hindered Pyridine-Linked Sulfonated Polytriazoles: Fabrication of Membranes and Investigation of Single Fuel Cell Performance

Construction of Zr-Metal–Organic Frameworks-Based Composite Materials toward Anhydrous Proton Conduction and Photocatalytic CO2 Reduction

Recent advances in non-perfluorinated sulfonic acid proton exchange membranes in the energy field

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Construction of Zr-Metal–Organic Frameworks-Based Composite Materials toward Anhydrous Proton Conduction and Photocatalytic CO₂ Reduction