Phosphoric acid-doped organic-inorganic cross-linked sulfonated poly(imide-benzimidazole) for high temperature proton exchange membrane fuel cells

Yue, Zhouying; Cai, Yanfei; Xu, Shiai

doi:10.1016/j.ijhydene.2015.10.057

Cited by 46 publications

(32 citation statements)

References 34 publications

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“…Comparing the IR spectra of both PBI‐Ph and PBI‐Pr membranes with that of the pristine PBI membrane, the absorption band of the stretching vibration of NH groups in benzimidazole rings shifted from around 3414 to about 3352 cm −1 and became weaker. This phenomenon should be due to the crosslinking reaction between benzimidazole groups and silane reagents . Meanwhile, new absorption bands at around 2924 and 2861 cm −1 , assigning to the stretching vibration of saturated CH groups in the silane crosslinker, appeared in the spectra of crosslinked membranes.…”

Section: Resultsmentioning

confidence: 98%

“…However, silane crosslinked PBI membranes in the present work could sustain higher ADLs for high conductivities and meanwhile exhibited superior mechanical strength at elevated temperatures. This result implies that silane crosslinked structure may form a hydrogen bond network with phosphoric acid molecules and facilitate the hopping of protons . Nevertheless, the precise proton conducting mechanism is needed to investigate in the future work.…”

Section: Resultsmentioning

confidence: 99%

“…Besides the organic compounds, inorganic compounds have been recently proposed as crosslinkers to fabricate crosslinked membrane electrolytes. The constituent particles could covalently crosslink with polymer backbones in order to enhance dimensional, chemical and mechanical stabilities of membrane materials . For example, Zhang and co‐workers reported a novel anion exchange membrane based on the bi‐guanidinium‐bridged polysilsesquioxane, which was fabricated via a sol–gel polymerization of an in‐house synthesized trimethoxysilane‐ended bi‐guanidinium monomer .…”

Section: Introductionmentioning

confidence: 99%

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Strengthening Phosphoric Acid Doped Polybenzimidazole Membranes with Siloxane Networks for Using as High Temperature Proton Exchange Membranes

Yang

Gao

Wang

et al. 2017

Macro Chemistry & Physics

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Two silane compounds, i.e., ((chloromethyl)phenylethyl)trimethoxysilane (Ph‐Si) and 3‐chloropropyltriethoxysilane (Pr‐Si), are employed as covalent crosslinkers to fabricate high temperature proton exchange membranes based on polybenzimidazole (PBI) in order to better understand the correlation between the structure and the property of the crosslinked membranes. All the crosslinked PBI membranes display longer morphology durability over the neat PBI membrane toward the radical oxidation. The crosslinked membranes with the crosslinker containing a rigid group of phenylene (PBI‐Ph) show superior acid doping level, high conductivity, and excellent mechanical strength simultaneously, comparing to those with the crosslinker having a flexible alkyl chain (PBI‐Pr) and the pristine PBI based membrane. The technical feasibility for using as high temperature proton exchange membranes is demonstrated by the acid doped crosslinked PBI‐Ph membranes via fuel cell tests.

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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Strengthening Phosphoric Acid Doped Polybenzimidazole Membranes with Siloxane Networks for Using as High Temperature Proton Exchange Membranes

Yang

Gao

Wang

et al. 2017

Macro Chemistry & Physics

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“…Increasing concerns over environmental pollution and depletion of fossil fuel have encouraged the development of sustainable, cost‐effective and enviromentally friendly energy resources . Fuel cells can transform chemical energy stored in fuels directly into electrical energy, and they are more efficient than combustion engines due to the absence of friction .…”

Section: Introductionmentioning

confidence: 99%

Novel sulfonated multi‐walled carbon nanotubes filled chitosan composite membrane for fuel‐cell applications

Ahmed

Ali

Cai

et al. 2019

J of Applied Polymer Sci

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In the present study, multi‐walled carbon nanotubes (MWCNTs) were sulfonated by 1,3‐propane sultone and distillation–precipitation polymerization, respectively, and then incorporated into chitosan (CS) to prepare CS/MWCNTs composite membranes for fuel cell applications. CS/MWCNTs membranes show better thermal and mechanical stability than pure CS membrane due to the strong electrostatic interaction between the SO3H groups of MWCNTs and the NH2 groups of CS, which can restrict the mobility of CS chain. The sulfonated MWCNTs provide efficient proton hopping sites (SO3H, SO3− …. 3+HN), thereby resulting in the formation of continuous proton conducting channels. The composite membranes with 5 wt % of MWCNTs modified by two different ways show a proton conductivity of 0.026 and 0.025 S·cm−1, respectively. In conclusion, CS/MWCNTs membrane is a promising proton exchange membrane for fuel‐cell applications. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47603.

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“…The rapid depletion of natural resources and the increase in environmental pollution have stimulated the search for sustainable cleaner energy sources . One promising approach is the conversion of chemical energy into electrical energy with zero emission of pollutants.…”

Section: Introductionmentioning

confidence: 99%

Preparation and performance of nanoparticle‐reinforced chitosan proton‐exchange membranes for fuel‐cell applications

Ahmed

Cai

Ali

et al. 2018

J of Applied Polymer Sci

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In this study, we incorporated commercially available p‐toluene sulfonic acid coated boehmite nanofillers (commercially known as OS1) into the chitosan (CS) matrix to fabricate CS–OS1 nanocomposite membranes with a high proton conductivity for fuel‐cell applications. These nanocomposite membranes were characterized by Fourier transform infrared spectroscopy, energy‐dispersive X‐ray spectroscopy, X‐ray diffraction analysis, scanning electron microscopy, and thermogravimetric analysis. Their mechanical properties, water uptake, ion‐exchange capacity, and proton conductivity were also determined. The results show that the incorporation of OS1 to CS chains can inhibit the mobility of CS chains and, hence, enhance the thermal stability and mechanical properties of CS–OS1 nanocomposite membranes. The composite membrane with 5 wt % OS1 showed a proton conductivity of 0.032 S/cm; this was almost equal to that of commercially available Nafion 117. We concluded that CS–OS1 nanocomposite membranes have potential for fuel‐cell applications. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 46904.

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Phosphoric acid-doped organic-inorganic cross-linked sulfonated poly(imide-benzimidazole) for high temperature proton exchange membrane fuel cells

Cited by 46 publications

References 34 publications

Strengthening Phosphoric Acid Doped Polybenzimidazole Membranes with Siloxane Networks for Using as High Temperature Proton Exchange Membranes

Strengthening Phosphoric Acid Doped Polybenzimidazole Membranes with Siloxane Networks for Using as High Temperature Proton Exchange Membranes

Novel sulfonated multi‐walled carbon nanotubes filled chitosan composite membrane for fuel‐cell applications

Preparation and performance of nanoparticle‐reinforced chitosan proton‐exchange membranes for fuel‐cell applications

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