Novel proton exchange membranes based on cardo poly(arylene ether sulfone/nitrile)s with perfluoroalkyl sulfonic acid moieties for passive direct methanol fuel cells

Zheng, Jifu; He, Qingyi; Gao, Nian; Yuan, Ting; Zhang, Suobo; Yang, Hui

doi:10.1016/j.jpowsour.2014.03.041

Cited by 36 publications

(22 citation statements)

References 29 publications

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“…23,24 The higher water uptake of ImPPESN-2.87 can be attributed to the formation of larger and more developed interconnected ionic channels for water molecules storage, as confirmed by AFM and SAXS.…”

Section: Df Iec Water Uptake (Wu) λ Swelling Ratio Of the Membranesmentioning

confidence: 78%

“…To perform this strategy, several methods could be used, such as using block copolymers as the backbones of membranes, [12][13][14][15] introducing branched or pendant ion groups into the membrane matrices, [16][17][18] and controlling the position and density of ion groups. [23][24][25] Phenolphthalein-based AEMs were also synthesized by chloromethylation, quaternization and ion exchange on commercial phenolphthalein-based cardo PES and PEK polymers. 22 For this reason, attempts have been made to the preparation of phenolphthalein-containing copolymers as ion conductive membranes in the last few years.…”

Section: Introductionmentioning

confidence: 99%

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Influence of phenolphthalein groups on the structure and properties of poly(arylene ether sulfone nitrile)-based anion exchange membranes for fuel cells

et al. 2015

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Two series of novel poly(arylene ether sulfone nitrile)s (PESN) multiblock copolymers are synthesized to prepare anion exchange membranes (AEMs) for alkaline fuel cells. To study the effect of phenolphthalein groups on the structure and properties of the membranes, the ion groups facilitating the formation of ion clusters are selectively and densely located on the phenolphthalein-sulfone segments for one and on the bisphenol A-sulfone segments for the other. The morphology and structure of the membranes are observed by atomic force microscopy and small angle X-ray scattering. The phenolphthalein-containing type endows the AEMs with a much clearer and more-defined microphase-separated structure leading to the formation of much larger and more developed interconnected ion-transport channels. As a result, high hydroxide conductivity (in the range of 2.04-12.98 ×10 -2 S cm -1 from 30 to 80 °C) and H2/O2 fuel cell performance (an open circuit voltage of 0.92 V and a maximum power density of 66.4 mW cm -2 at 60 °C) can be achieved. Furthermore, the phenolphthalein-containing AEMs also show higher water uptake and mechanical strength, lower swelling ratio, and higher thermal and alkaline stability than the phenolphthalein-free AEMs.

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Section: Df Iec Water Uptake (Wu) λ Swelling Ratio Of the Membranesmentioning

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Influence of phenolphthalein groups on the structure and properties of poly(arylene ether sulfone nitrile)-based anion exchange membranes for fuel cells

et al. 2015

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“…All of the membranes exhibited lower swelling ratios than that of Nafion (Table ). Among them, the PMFP‐ g ‐PS exhibited good resistance to water since the swelling ratio of PMFP‐ g ‐PS was only 3.6% at 25 °C, the comparatively low water uptake and swelling ratio might be attributed to the existence of short hydrophobic chain between the sulfonic acid groups and polymer main chain, which could favor the phase separation in the sulfonated polymer and suppress the swelling behavior …”

Section: Resultsmentioning

confidence: 99%

Proton exchange membrane based on crosslinked sulfonated polyphosphazene containing pendent perfluorosulfonic acid groups with sulfonated poly(ether ether ketone)

Yan

Zhang

Xu³

et al. 2016

J of Applied Polymer Sci

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A series of crosslinked membranes based on new sulfonated polyphosphazene bearing pendent perfluorosulfonic acid groups (PMFP-g-PS) and sulfonated poly (ether ether ketone) were prepared and evaluated as proton exchange membranes for direct methanol fuel cells (DMFCs). The structure of PMFP-g-PS was characterized by Fourier transform infrared spectroscopy, 1 H and 19 F NMR spectra. In comparison with the pristine PMFP-g-PS membrane, the crosslinked membranes showed improved water uptakes and proton conductivities. The methanol permeability values of the membranes were in the range of 1.32 3 10 27 to 3.85 3 10 27 cm 2 /s, which were lower than Nafion 117 (12.1 3 10 27 cm 2 /s). The selectivity of all the membranes was much higher compared with Nafion 117. Furthermore, transmission electron microscopy observation revealed that clear phase-separated structures were well dispersed and connected to each other in the membranes. These membranes displayed high water uptakes and low swelling ratios, high proton conductivities, low methanol permeability values, good thermal, and oxidative stabilities. The results indicate that these membranes are potential candidate proton exchange membrane materials for DMFCs. V C 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43492.

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“…An additional series of PESNs has demonstrated the application of AEM materials in AFCs . Polymer electrolyte fuel cells (PEFCs) are one of the most promising power sources and have properties such as high energy density, efficiency, and low noise and low pollution levels.…”

Section: Industrial Applications Of Phthalein Dyesmentioning

confidence: 99%

“…Another series of phenolphthalein-based poly(arylene ether sulphone nitrile)s (PESN) multiblock copolymers containing 1-methylimidazole groups (1mPESN) 24 has demonstrated the application of AEM materials in AFCs [142]. An additional series of PESNs has demonstrated the application of AEM materials in AFCs [143][144][145]. Polymer electrolyte fuel cells (PEFCs) are one of the most promising power sources and have properties such as high energy density, efficiency, and low noise and low pollution levels.…”

Section: Fuel Cellsmentioning

confidence: 99%

Developments in the chemistry and applications of phthalein dyes. Part 1: industrial applications

Sabnis¹

2018

Coloration Technology

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This review describes the huge impact of phthalein dyes on multiple industries. Although phthalein dyes demonstrate several vital applications, there appears to be no review in the literature. Part 1 of this review focuses on developments in the chemistry and industrial applications of phthalein dyes. The industrial applications of phthalein dyes are grouped into building/construction applications, coating applications, electronic/electrical applications and miscellaneous applications. The importance of these dyes in various commercial products is also revealed, and patent analysis is provided in the appendix. The uses of phthalein dyes in various fields are important but their growing popularity with fascinating colour change features is particularly notable. Part 2 of the review will focus on the developments in the chemistry and biological applications of phthalein dyes.

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Novel proton exchange membranes based on cardo poly(arylene ether sulfone/nitrile)s with perfluoroalkyl sulfonic acid moieties for passive direct methanol fuel cells

Cited by 36 publications

References 29 publications

Influence of phenolphthalein groups on the structure and properties of poly(arylene ether sulfone nitrile)-based anion exchange membranes for fuel cells

Influence of phenolphthalein groups on the structure and properties of poly(arylene ether sulfone nitrile)-based anion exchange membranes for fuel cells

Proton exchange membrane based on crosslinked sulfonated polyphosphazene containing pendent perfluorosulfonic acid groups with sulfonated poly(ether ether ketone)

Developments in the chemistry and applications of phthalein dyes. Part 1: industrial applications

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