Preparation and Characterization of PVDF/Pes/Nafion® 117 Membranes With Potential Application in Vanadium Flow Batteries

Limón, B.Y. García

doi:10.24275/uam/izt/dcbi/revmexingquim/2019v18n2/garcia

Cited by 5 publications

(3 citation statements)

References 17 publications

(21 reference statements)

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“…The IEC of membranes was measured using an acid-base titration method as reported in a previous study [ 44 ]. The membranes were cut in pieces of 2 cm × 2 cm, then immersed in 10 mL of 0.1 M HCl and kept for 24 h to ensure the consumption of OH − with H + .…”

Section: Methodsmentioning

confidence: 99%

Synthesis of Anion Exchange Membranes Containing PVDF/PES and Either PEI or Fumion®

et al. 2022

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In this work, the preparation of dense blended membranes, from blends of poly(vinylidene fluoride) (PVDF), poly(ether sulfone) (PES) and polyethyleneimine (PEI) or Fumion®, with possible applications in alkaline fuel cell (AEMFC) is reported. The blended PEI/Fumion® membranes were prepared under a controlled air atmosphere by a solvent evaporation method, and were characterized regarding water uptake, swelling ratio, thermogravimetric analysis (TGA), infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), ion exchange capacity (IEC), OH− conductivity and novel hydroxide ion exchange rate (HIER), which is related to the mass transport capacity of the OH− ions through the membrane. The effect of the chemical composition on its morphological and anion exchange properties was evaluated. It was expected that the usage of a commercial ionomer Fumion®, in the blended membranes would result in better features in the electrical/ionic conductivity behaviour. However, two of the membranes containing PEI exhibited a higher HIER and OH− conductivity than Fumion® membranes, and were excellent option for potential applications in AEMFC, considering their performance and the cost of Fumion®-based membranes.

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Section: Methodsmentioning

confidence: 99%

Synthesis of Anion Exchange Membranes Containing PVDF/PES and Either PEI or Fumion®

et al. 2022

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“…For ion exchange capacity (IEC) and anionic conductivity ( σ ), polymers were used in form of a polymeric film as a previous report 36 . Doctor blade technique was used to prepare the thin film.…”

Section: Methodsmentioning

confidence: 99%

Synthesis and ex‐situ evaluation of quaternized polysulfone as an anion exchange ionomer for AEM technologies

Salazar‐Gastélum

Beltrán‐Gastélum

Calva-Yáñez

et al. 2022

J of Applied Polymer Sci

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Anion exchange ionomer (AEI) is a critical component used on anion exchange membrane fuel cell (AEMFC) and alkaline water electrolyzer (AWE). In this work, quaternized polysulfone with different functionalization degree were used as an ionomer to evaluate the performance in the oxygen reduction reaction (ORR) and hydrogen oxidation reaction (HOR), both implied in the operation of AEMFC and AWE. The synthesized ionomer exhibited a better performance in both reactions in comparison to the commercial AEI Aemion®. PSf‐130 exhibited better performance, since IEC and surface area increases twice regarding the same parameters in the PSf‐60. The PSf‐130 conductivity increases three times regarding the value exhibited by PSf‐60. Finally, the Jlim and Jk increases 67% and 100% for ORR. On the other hand, the same catalytic parameter increased 44% and 35% for HOR comparing both polysulfone‐based ionomers. The Tafel slope values do not showed drastically changes for different ionomers indicating the same rate determining step (RDS) and the same mechanism in both reactions for all the ionomers.

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“…Additionally, a number of methods, such as ?greener? materials application, particle size reduction, carbonaceous conductive coatings and super valent metal ions doping or development of new synthesis methods have been used to achieve improvements in cyclability and active materials specific capacity (Fergus, 2010;García-Limón, Salazar-Gastelum, Lin, Calva-Yañez, & Pérez-Sicairos, 2019;Li, Erickson, & Manthiram, 2020;Llusco, Grageda, & Ushak, 2020).…”

Section: Introductionmentioning

confidence: 99%

Effect of particle-size distribution on LiFePO4 cathode electrochemical performance in Li-ion cells

Cofré

Quispe²,

Grágeda³

2022

RMIQ

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Preparation and Characterization of PVDF/Pes/Nafion® 117 Membranes With Potential Application in Vanadium Flow Batteries

Abstract: Modelado de la biodegradación en biorreactores de lodos de hidrocarburos totales del petróleo intemperizados en suelos y sedimentos (Biodegradation modeling of sludge bioreactors of total petroleum hydrocarbons weathering in soil and sediments)

Cited by 5 publications

References 17 publications

Synthesis of Anion Exchange Membranes Containing PVDF/PES and Either PEI or Fumion®

Synthesis of Anion Exchange Membranes Containing PVDF/PES and Either PEI or Fumion®

Synthesis and ex‐situ evaluation of quaternized polysulfone as an anion exchange ionomer for AEM technologies

Effect of particle-size distribution on LiFePO4 cathode electrochemical performance in Li-ion cells

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