New non-fluoridated hybrid proton exchange membranes based on commercial precursors

Chesnokova, Alexandra; Лебедева, О. В.; Малахова, Е. А.; Raskulova, Tat'yana; Kulshrestha, Vaibhav; Kuzmin, Anton V.; Pozdnyakov, A. S.; Pozhidaev, Yu. N.

doi:10.1016/j.ijhydene.2019.09.124

Cited by 6 publications

(3 citation statements)

References 77 publications

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“…Although the perfluorosulfonic acid (PFSA) PEMs benefit from excellent stability and performance and accordingly set a benchmark for other alternatives, their prohibitive cost has hindered the PEFCs' further progress. Thus, it is imperative to find a low‐cost substitute for the state‐of‐the‐art PFSA membranes 2 . In particular, hydrocarbon‐based membranes are suitable candidates, given their low cost, straightforward production process, flexibility in chemical structure and morphology design, and their environmentally friendly, fluorine‐free nature 3,4 .…”

Section: Introductionmentioning

confidence: 99%

“…Thus, it is imperative to find a low-cost substitute for the state-of-the-art PFSA membranes. 2 In particular, hydrocarbon-based membranes are suitable candidates, given their low cost, straightforward production process, flexibility in chemical structure and morphology design, and their environmentally friendly, fluorine-free nature. 3,4 Different types of hydrocarbonbased polymers have been utilized for developing alternative PEMs, such as sulfonated poly(ether sulfone), 5 sulfonated poly(arylene ether sulfone), 6 sulfonated polyimide, 7 and sulfonated poly(ether ether ketone) (SPEEK).…”

Section: Introductionmentioning

confidence: 99%

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Numerical investigation of gas cross‐over and hydrogen peroxide formation in hydrocarbon‐based fuel cell membranes

Karimi

Kalfati

Mirfarsi

et al. 2022

Intl J of Energy Research

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Summary Although hydrocarbon‐based proton exchange membranes have gained popularity, their durability needs further evaluation. In this study, a dynamic model is developed for a membrane electrode assembly (MEA) working with sulfonated poly (ether ether ketone) (SPEEK) membrane to predict the concentration profiles of reactants inside the MEA, their cross‐over in the membrane, and hydrogen peroxide formation via chemical and electrochemical modes as a function of voltage and membrane thickness. Results show that reactants cross‐over, especially oxygen is accelerated under high voltages, promoting the chemical mode of H2O2 formation, whereas the voltage driving force and oxygen concentration simultaneously control the electrochemical mode. Moreover, a 50% reduction in SPEEK membrane thickness yields about 90%, 200%, and up to 50% rise in reactant cross‐over, chemical, and electrochemical H2O2 formation modes, respectively. The figures for the chemical mode of H2O2 formation are five orders of magnitude greater than their electrochemical counterparts. This numerical study shows that the most attention should be paid to the anode/membrane interface to mitigate the chemical degradation of hydrocarbon‐based proton exchange membranes.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical investigation of gas cross‐over and hydrogen peroxide formation in hydrocarbon‐based fuel cell membranes

Karimi

Kalfati

Mirfarsi

et al. 2022

Intl J of Energy Research

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“…3,24 The most commonly used polymers for producing non-fluorinated PM are: polybenzimidazole (PBI), [25][26][27] poly(arylene ether ketone) (SPEEK), [28][29][30] poly(arylene ether sulfone) (PES), 30,31 polysulfone (PS), [28][29][30][31] poly(imide) (PI), 31 and other polymers. Polymer membranes can be modified with various inorganic fillers, such as inorganic oxides (oxides of silicon, titanium, cerium, or zirconium), 13,[32][33][34][35][36] boron nitride, 37,38 zeolites, 39 graphene oxide, 40,41 and other fillers. 42,43 Polymeric N-heterocycles with side chains, such as poly(4-vinylimidazole), poly(viny-1.2.4-ltriazole), poly…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of new proton‐exchange membranes based on poly‐1‐vinyl‐1,2,4‐triazole doped with phenol‐2,4‐disulfonic acid

Лебедева

Pozhidaev

Raskulova

et al. 2021

Intl J of Energy Research

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Poly-1-vinyl-1,2,4-triazole (PVT) was synthesized in isolated yield by free radical polymerization of 1-vinyl-1,2,4-triazole. The number average molecular weight and weight average molecular weight of the synthesized PVT, determined by gel permeation chromatography, was 88 567 and 153 309 Da, respectively. PVT had a unimodal molecular weight distribution with a polydispersity coefficient of 1.7. Mixing PVT with phenol-2,4-disulfonic acid (PDSA) in the presence of a polyvinyl alcohol cross-linked with oxalic acid produces proton exchange membranes having different PVT:PDSA ratios. The composition and structure of the membranes were established by elemental analysis, energy-dispersive X-ray spectroscopy (EDS), scanning electron microscope (SEM), Fourier-transform infrared spectroscopy (FT-IR), and nuclear magnetic resonance spectroscopy (NMR). FT-IR and 15 N NMR studies have shown that the interaction of PVT with PDSA was accompanied by the formation of acid-base complexes due to proton transfer from PDSA to the triazole rings of PVT. Formation of acid-base complexes PVT-PDSA additionally stabilizes membranes and increases their thermal stability. The SEM study showed that the membrane surface was homogeneous. The properties of membranes, such as thermal and oxidative stability, ion-exchange capacity, proton conductivity, water uptake, and their mechanical properties, have been studied. The commercial membrane Nafion 212 was used as a comparison. The proton conductivity of membranes increases with an increase in the content of PDSA in their composition and for membranes 1-3 was 59.80, 7.30, 6.23 mS/cm, respectively. The activation energies for proton transfer across the membranes were 19.5, 21.6, and 38.2 kJ/mol for the membranes 1-3, respectively. Water uptake, ion-exchange capacity, and proton conductivity depend on the content of PDSA in the membrane. The membranes obtained were tested in a test cell of an ElectroChem hydrogen fuel cell (USA) at a temperature of 25 C with the supply of humidified hydrogen and air.

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Study of the composition and structure of ion-conducting membranes based on polyvinyl alcohol by 1H NMR spectroscopy

Lezova

Myasnikov

Шилова

et al. 2022

International Journal of Hydrogen Energy

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New non-fluoridated hybrid proton exchange membranes based on commercial precursors

Cited by 6 publications

References 77 publications

Numerical investigation of gas cross‐over and hydrogen peroxide formation in hydrocarbon‐based fuel cell membranes

Numerical investigation of gas cross‐over and hydrogen peroxide formation in hydrocarbon‐based fuel cell membranes

Synthesis and characterization of new proton‐exchange membranes based on poly‐1‐vinyl‐1,2,4‐triazole doped with phenol‐2,4‐disulfonic acid

Study of the composition and structure of ion-conducting membranes based on polyvinyl alcohol by 1H NMR spectroscopy

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