Membranes based on polybenzimidazole and protic ionic liquid: preparation and properties

Fadeeva, Yu. A.; Kuzmin, Sergey M.; Shmukler, L. E.; Safonova, L. P.

doi:10.1007/s11172-021-3056-z

Cited by 10 publications

(5 citation statements)

References 57 publications

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“…S1). Earlier in [36] [38], we discussed that different temperatures can be considered as a measure of membrane thermal stability. Typically, the temperature at which the fastest mass loss of the sample occurs (𝑡 𝑑𝑒𝑐 𝑜𝑛𝑠𝑒𝑡 ) is used as an indicator of its thermal stability.…”

Section: Thermal Properties Of the Membranesmentioning

confidence: 99%

“…For the membranes doped with [MeIm/TfO] (see Fig. S1) and BuIm/TfO [36], 𝑡 𝑑𝑒𝑐 𝑜𝑛𝑠𝑒𝑡 were observed within the temperature ranges of 380-385°С and 370-380°С, respectively, and corresponded to about 20% of the sample weight loss. However, such substantial weight loss cannot be a measure of the membrane's thermal stability.…”

Section: Thermal Properties Of the Membranesmentioning

confidence: 99%

“…2. [BuIm/TfO] and corresponding membranes were calculated using the Arrhenius equation coefficients given in our previous works [37] and [36], respectively. The melting temperatures of [MeIm/TfO] and [MeIm/TfO]/PBI=2.3 are shown as vertical dash lines.…”

Section: Membranes Conductivitymentioning

confidence: 99%

“…The aim of this study was to prepare and study the conductivity and thermal characteristics of PBI membranes doped with protic ionic liquid [MeIm/TfO]. As the beginning of a series of studies, we previously reported the PBI membranes doped with different amounts of Nbutylimidazolium triflate [BuIm/TfO] [36]. In this study, we aim to compare various properties of the resulting membranes depending on the dopant amount and nature, namely on the hydrocarbon chain length in the imidazolium cation.…”

Section: Introductionmentioning

confidence: 99%

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New PBI Membranes Doped with Methyl-Imidazolium Triflate Protic Ionic Liquid

Fadeeva,

Kuzmin,

Shmukler

et al. 2024

Polym. Sci. Ser. A

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Due to the increasing global demand for sustainable energy sources, fuel cells are being considered as a green alternative to conventional power generation methods. Proton Exchange Membrane Fuel Cells (PEMFCs) are particularly promising energy sources due to their high energy efficiency and low environmental impact. However, there is an urgent need to develop proton-conducting materials that can operate under low-humidity conditions and at high working temperatures. In this study, new proton conducting membranes were prepared using poly-2,2'-(m-phenylene)-5,5'-bibenzimidazole (PBI) and varying amounts of a protic ionic liquid, methylimidazolium triflate [MeIm/TfO], through a solution casting method. The thermal properties and conductivity of these membranes were investigated. The obtained parameters indicate that PBI membranes doped with either MeIm/TfO or BuIm/TfO, which were previously studied by our group, are of definite interest for further investigation as potential electrolytes for PEMFCs.

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Section: Thermal Properties Of the Membranesmentioning

confidence: 99%

Section: Thermal Properties Of the Membranesmentioning

confidence: 99%

Section: Membranes Conductivitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

New PBI Membranes Doped with Methyl-Imidazolium Triflate Protic Ionic Liquid

Fadeeva,

Kuzmin,

Shmukler

et al. 2024

Polym. Sci. Ser. A

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“…An efficient strategy for achieving a high conductivity of polymeric membranes at temperatures above 100 °C is the loading of anhydrous proton carriers into different polymer materials, e.g. polybenzimidazole, poly(vinylidenefluoride‐ co ‐hexafluoropropylene) and some others 4–9 . The phosphoric acid‐doped polybenzimidazole membrane seems so far the most successful system in the field of membranes working at temperatures above 100 °C 10–14 .…”

Section: Introductionmentioning

confidence: 99%

Imidazolium zwitterion‐based protic ionic liquids: from monomers to polymer membranes

Fadeeva

Shmukler

Груздев

et al. 2021

Polymer International

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We present the results of synthesis and investigation of the thermal behavior, ion transport properties and electrochemical stability of polymerized imidazolium‐based protic ionic liquids (poly(ILs)) as materials with potential applications in electrochemical devices. The phase behavior of both poly(ILs) and the corresponding IL monomers (MILs) was studied using differential scanning calorimetry and thermogravimetric analysis. The temperature dependences of the conductivity and electrochemical window of all the MILs and poly(ILs) are discussed. © 2021 Society of Chemical Industry

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