Synthesis and properties of sulfonated poly(phosphazene)‐graft‐poly(styrene‐co‐<i>N</i>‐benzylmaleimide) copolymers via atom transfer radical polymerization for proton exchange membrane

Yan, Dong; Xu, Hulin; He, Minlan; Fu, Fengyan; Zhu, Changjin

doi:10.1002/app.42251

Cited by 11 publications

(1 citation statement)

References 39 publications

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“…Изменение свойств мембраны сульфированных полиэфирэфиркетонов при различной степени сульфирования , глутаральдегид [36], ангидриды многоосновных кислот [37], также могут вызывать сшивание ПВС. Серия сульфированных сополимеров полифосфазена и привитого сополимера полистирол-N-бензилмалеимид (ПФ-ПСБМ) получена с помощью радикальной полимеризации с последующим региоселективным сульфированием, которое происходило преимущественно в привитой сополимер полистирол-N-бензилмалеимид [38]. Полученные сульфированные ПФ-ПСБМ мембраны показали высокое поглощение воды, низкий коэффициент набухания воды, низкие коэффициенты проницаемости для метанола и более высокую протонную проводимость по сравнению с сульфированными мембранами из поли-бис-(фенокси)фосфазена, значительно улучшилась термическая и окислительная стабильность.…”

Section: Abstract: Composite Membranes Fuel Cell Proton Conductivity ...unclassified

Composite membranes for fuel cells

Лебедева

Sipkina

2023

Izvestiâ vuzov. Prikladnaâ himiâ i biotehnologiâ

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The current ecological situation attracts particular attention to alternative energy sources with no detrimental impact on the ecosystem. In comparison with conventional energy sources, fuel cells exhibit the following advantages: small and compact size, light weight, lack of noise when working, and cost-effectiveness in terms of fuel consumption. Most importantly, fuel cells are environmentally friendly, since no harmful substances are released into the atmosphere during their operation. Their goal is to convert chemical energy from various sources into environmentally friendly electric power. At present, chemical sources of energy are used everywhere, including batteries for mobile phones, laptops, as well as cars and uninterruptible power supplies, to name a few. The main components of solid polymer fuel cells are proton-exchange membranes, the main function of which is to ensure the transfer of protons from the anode to the cathode. The proton conductivity of such materials is determined by the presence of hydrophilic channels that transport mobile protons. The proton-exchange membrane must meet the following requirements: electrochemical and chemical stability in aggressive chemical environments, mechanical and thermal strength, low permeability to reagent gases (fuel and oxidizer), high ion exchange capacity and electrical conductivity, as well as a relatively low cost. This paper considers perfluorinated sulfonic acid membranes, organic–inorganic and acid–base composite membranes, as well as hybrid membranes obtained by sol-gel process, which can contribute to the development of technologies related to fuel cells in the future.

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Section: Abstract: Composite Membranes Fuel Cell Proton Conductivity ...unclassified

Composite membranes for fuel cells

Лебедева

Sipkina

2023

Izvestiâ vuzov. Prikladnaâ himiâ i biotehnologiâ

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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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Novel proton conducting membranes based on copolymers containing hydroxylated poly(ether ether ketone) and sulfonated polystyrenes

Luo

Xu²,

et al. 2017

J of Applied Polymer Sci

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A novel series of hydrocarbon‐based copolymers containing flexible alkylsulfonated groups and hydroxylated poly(ether ether ketone) backbones was designed and prepared as proton conducting membranes. Among the membranes, the membrane SPO3–(PMS–PSBOS)2 with the ion exchange capacity 1.70 showed good proton conductivity at 0.137 S/cm at 80 °C, which was two times as much as that of the control membrane SPO. Further, incorporating the sulfonated graphene oxide (s‐GO) into SPO3–(PMS‐PSBOS)2 leads to the composite membrane SPO3–(PMS–PSBOS)2–SGO, which exhibited higher proton conductivity compared to Nation 117 and the native membrane SPO3–(PMS–PSBOS)2. In addition, the composite membrane SPO3–(PMS–PSBOS)2–SGO showed well‐defined phase separated structures and high selectivity (1.40 × 105 Ss/cm3), which were about three times as that of Nafion 117 (0.52 × 105 Ss/cm3). These results suggested that these membranes are promising materials for direct methanol fuel cell (DMFC) applications. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45205.

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Synthesis and properties of sulfonated poly(phosphazene)‐graft‐poly(styrene‐co‐N‐benzylmaleimide) copolymers via atom transfer radical polymerization for proton exchange membrane

Cited by 11 publications

References 39 publications

Composite membranes for fuel cells

Composite membranes for fuel cells

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

Novel proton conducting membranes based on copolymers containing hydroxylated poly(ether ether ketone) and sulfonated polystyrenes

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