Aligned electrospun nanofibers as proton conductive channels through thickness of sulfonated poly (phthalazinone ether sulfone ketone) proton exchange membranes

Gong, Xue; He, Gaohong; Wu, Yao; Zhang, Shikai; Chen, Bo; Dai, Yan; Wu, Xuemei

doi:10.1016/j.jpowsour.2017.05.022

Cited by 49 publications

(36 citation statements)

References 48 publications

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“…presented a novel method of preparation of nanofiber composite membranes with through‐plane nanoscale proton conductive channels carried by vertically‐aligned nanofibers (Fig. ) . The 3D random network structure of ion‐exchange nanofibers in the polymer matrix provides efficient ion‐conductive channels and vertical alignment of the ion‐exchange nanofibers has the potential to realize ideal transport channels such as the transmembrane channel protein.…”

Section: Summary and Perspectivementioning

confidence: 99%

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Nanofibers as novel platform for high‐functional ion exchangers

Zhang

Tanioka

Matsumoto

2018

J of Chemical Tech & Biotech

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Nanofibers have unique functionalities based on their nanoscaled cross‐section, high specific surface area, and high molecular orientation inside the fibers. These functionalities can be improved by controlling their diameter, surface and internal structures. The introduction of ion‐exchange sites on the surface and/or inside the nanofibers provides novel high‐functional ion‐exchangers with high surface areas, high ion‐exchange and adsorption capacities, and high ionic conductivities. The present review highlights the fundamental aspects of ion‐exchange nanofibers (i.e. their size‐dependent unique properties and production methods) and their recent advances in the environment and energy applications (i.e. separation/purification processes and fuel cells). © 2018 Society of Chemical Industry

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Section: Summary and Perspectivementioning

confidence: 99%

“…(c) Optical photograph of the thickness aligned electrospun membrane (left) and the cast membrane (right). (d–f) Surface and cross‐sectional SEM images of the thickness aligned electrospun composite membrane …”

Section: Summary and Perspectivementioning

confidence: 99%

Nanofibers as novel platform for high‐functional ion exchangers

Zhang

Tanioka

Matsumoto

2018

J of Chemical Tech & Biotech

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“…Given the relatively low water absorption rate, the proton conduction mainly occurred in the form of “Grotthuss” mechanism, which indicated the protons jumped between the adjacent ion clusters to transfer the proton. [ 37,22 ] On the other side, the proton conductivity of the membranes occurred following the mechanism of “Vehicle” in the water media. Proton transport mechanism of the obtained membrane is shown in Figure .…”

Section: Resultsmentioning

confidence: 99%

Novel Nanocomposite PEM Membranes with Continuous Proton Transportation Channel and Reinforcing Network Formed by Electrospinning Solution Casting Method

Hou

Zhao

et al. 2020

Macro Materials & Eng

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In this work, a kind of novel nanocomposite proton exchange membranes (PEMs) with excellent properties for fuel cell application is obtained through the combination of electrospinning and solution casting. PEMs are obtained via the electrospinning of solution of sulfonated poly(arylene ether ketone)s (SPAEK)s with carboxylic acid group (SPAEK‐COOH) inserted with nanocrystal cellulose (NCC) first, and then, the SPAEK‐COOH solution is cast on the obtained electrospinning membrane to fill the voids. According to the scanning electron microscopy image of the membrane surface and freeze‐fractured cross section, the nonporous membrane was successfully obtained. The water uptake and the swelling rate of the nanocomposite membrane with 2% NCC (NF‐NCC2) decrease to 62% and 61.5%, respectively, and the membrane shows much higher proton conductivity (0.29 S cm−1) than the pristine SPAEK‐COOH membrane (NF‐NCC0) (0.196 S cm−1) at 100 °C. Furthermore, NF‐NCC2 shows a tensile strength of 38 MPa, which is an increase of 36% compared to NF‐NCC0 (28 MPa). The orderly and uniform distribution of NCC in the electrospinning nanofiber and further in the membranes.

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“…However, various types of nanofibers are utilized to arrange proton conducting sites into long‐range proton transfer channels because of their large surface area, high aspect ratio, and facile modification . Nanofibers from ion polymers, such as Nafion, sulfonated polyethersulfone (SPES), and poly (phthalazinone ether sulfone ketone), and those decorated with nanoparticles, such as GO, MOF, and SiO 2, have been embedded into a polymer matrix to enhance proton conductivity. Protons can be efficiently transported in nanofiber composite membranes by relying on hydrophilic ion clusters along the nanofibers through jumps, carriers, and surface transport .…”

Section: Introductionmentioning

confidence: 99%

Enhancing proton conductivity of proton exchange membrane with SPES nanofibers containing porous organic cage

Shao

Shi

et al. 2020

Polymers for Advanced Techs

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Effective proton conducting sites and establishing proton channels are two critical factors in developing high-performance proton exchange membranes. This study first establishes a strategy in designing effective proton conducting channels for Nafion by using solution blowing of sulfonated polyethersulfone (SPES) nanofibers containing CC3, which is an emerging porous organic cage that possesses the advantages of dissolvable organic solvents and high proton conduction from its interconnected three-dimensional pore structure. Our strategy results in SPES nanofiber networks with CC3 uniformly involved in and composite membranes with Nafion-filled interfiber voids. Benefiting from such structural features, the composite membrane exhibits high proton conductivity (0.315 S cm −1 at 80 C and 100% RH), low methanol permeability (0.69 × 10 −7 cm 2 S −1 ), excellent water absorption, thermal and dimensional stability, and single-cell performance. This study provides not only a valuable reference for the application of CC3 but also a new idea for establishment of proton transfer channels. K E Y W O R D S high proton conductivity, porous organic cage CC3, proton exchange membrane, SPES nanofibers

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Aligned electrospun nanofibers as proton conductive channels through thickness of sulfonated poly (phthalazinone ether sulfone ketone) proton exchange membranes

Cited by 49 publications

References 48 publications

Nanofibers as novel platform for high‐functional ion exchangers

Nanofibers as novel platform for high‐functional ion exchangers

Novel Nanocomposite PEM Membranes with Continuous Proton Transportation Channel and Reinforcing Network Formed by Electrospinning Solution Casting Method

Enhancing proton conductivity of proton exchange membrane with SPES nanofibers containing porous organic cage

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