Electrical and spectroscopic characterization of PVdF-HFP and TFSI—ionic liquids-based gel polymer electrolyte membranes. Influence of ZnTf2 salt

Tafur, Juan P.; Romero, Antonio J. Fernández

doi:10.1016/j.memsci.2014.07.007

Cited by 75 publications

(54 citation statements)

References 42 publications

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“…The bending of C–C–C bonding emerged at 1070 cm −1 , whereas a strong peak of CH 2 was observed at 1402 cm −1 . Moreover, few more peaks were observed at 509.7 and 836.2 cm −1 , which could be attributed to a phase β of PVDF‐HFP . In addition, the OH stretching of H‐bonding and CH stretching appears at 3300–3500 cm −1 and 3000 cm −1 that confirms the successful modification of PVDF‐HFP/CNF with glutaraldehyde crosslinked with collagen …”

Section: Resultsmentioning

confidence: 53%

Crosslinked PVDF‐HFP‐based hydrophobic membranes incorporated with CNF for enhanced stability and permeability in membrane distillation

Ray

Deb

Chang

et al. 2019

J of Applied Polymer Sci

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Over the past decades, numerous materials have emerged as promising amenities for the fabrication of novel membranes. The current study gives insight into a modest and effective method to fabricate a crosslinked poly‐vinylidene fluoride‐co‐hexafluoropropylene membrane with better mechanical properties and permeability for desalination. Poly‐vinylidene fluoride‐co‐hexafluoropropylene membrane was grafted with crosslinked collagen to enhance direct contact membrane distillation used for desalination. Stiffness, rigidity and mechanical properties of the membrane were intensified by incorporating collagen (extracted from eggshells) into the membrane matrix, with glutaraldehyde crosslinkers. Furthermore, to improve water vapor diffusion, immobilized carbon nanofibers (CNF) were integrated in the membrane, casted via phase inversion technique with an optimized controlled approach. The permeate flux of CNF incorporated membrane was as high as 8 LMH, 18% higher than the unmodified poly‐vinylidene fluoride‐co‐hexafluoropropylene membrane at 60 °C, besides minimal salt leakage. The properties of the modified membrane were characterized from its contact angle, morphological structure, surface roughness, dynamic mechanical properties, and water flux. The overall performance of the modified membranes was better than the virgin membranes. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48021.

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Section: Resultsmentioning

confidence: 53%

Crosslinked PVDF‐HFP‐based hydrophobic membranes incorporated with CNF for enhanced stability and permeability in membrane distillation

Ray

Deb

Chang

et al. 2019

J of Applied Polymer Sci

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“…The complex impedance plots of M 30 and M 40 showed similar behavior, except incomplete semicircle at highfrequency region was observed, which was due to the rapid transportation of ions at electrode-contact interface [20]. It revealed that the total conductivity in M 30 and M 40 was due to the ionic conduction [20,21].…”

Section: Resultsmentioning

confidence: 75%

“…It revealed that the total conductivity in M 30 and M 40 was due to the ionic conduction [20,21]. The obtained impedance curves are fitted with equivalence circuit depicted in inset of Fig.…”

Section: Resultsmentioning

confidence: 96%

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Effects of ionic liquid on the hydroxylpropylmethyl cellulose (HPMC) solid polymer electrolyte

Chong

Liew

Numan

et al. 2016

Ionics

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Biodegradable solid polymer electrolyte (SPE) is prepared by solution-casting technique using low-cost cellulose derivative, hydroxypropylmethyl cellulose (HPMC) as a host polymer. Owing to the hydrophobic nature of this polymer, it is predicted to exhibit low ionic conductivity upon addition of magnesium trifluoro methanesulfonate (MgTf 2 ) salt. Therefore, ionic liquid (IL), 1-butyl-3-methylimidazolium trifluoro methanesulfonate (BMIMTf), is added in order to enhance its ionic conductivity. Based on the findings, the ionic conductivity at room temperature and the dielectric behaviors of the SPE complex improved upon incorporation of 40 wt.% IL. On top of that, addition of IL reduces the degree of crystallinity and the glass transition temperature (T g ) of the SPE. The conductivity-temperature plot revealed that the transportation of ions in these films obey Arrhenius theory. The interaction between SPE complex, MgTf 2 salt, and BMIMTf is investigated by means of Fourier transform infrared (FTIR) spectroscopy through the change in peak intensity around 3413, 1570, and 1060 cm −1 , which are responsible for -OH stretching band, C-C and C-N bending modes of cyclic BMIM + , and C-O-C stretching band, respectively.

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“…Currently, several research groups focus their investigation on GPEs to be applied in different storage systems, including lithium, zinc, or magnesium batteries [10][11][12][13]. A lot of these batteries use MnO 2 cathodes, although until now the charge store mechanism of MnO 2 in GPE-based batteries has not been studied in detail.…”

Section: Introductionmentioning

confidence: 99%

Charge storage mechanism of MnO 2 cathodes in Zn/MnO 2 batteries using ionic liquid-based gel polymer electrolytes

Tafur

Abad

Román

et al. 2015

Electrochemistry Communications

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Electrical and spectroscopic characterization of PVdF-HFP and TFSI—ionic liquids-based gel polymer electrolyte membranes. Influence of ZnTf2 salt

Cited by 75 publications

References 42 publications

Crosslinked PVDF‐HFP‐based hydrophobic membranes incorporated with CNF for enhanced stability and permeability in membrane distillation

Crosslinked PVDF‐HFP‐based hydrophobic membranes incorporated with CNF for enhanced stability and permeability in membrane distillation

Effects of ionic liquid on the hydroxylpropylmethyl cellulose (HPMC) solid polymer electrolyte

Charge storage mechanism of MnO 2 cathodes in Zn/MnO 2 batteries using ionic liquid-based gel polymer electrolytes

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