Preparation, characterization and properties of PVDF-g-PAMPS/PMMA- co -PAMPS/silica nanoparticle as a new proton exchange nanocomposite membrane

Ahmadian‐Alam, Leila; Kheirmand, Mehdi; Mahdavi, Hossein

doi:10.1016/j.cej.2015.09.048

Cited by 51 publications

(27 citation statements)

References 33 publications

(57 reference statements)

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“…The reason for this phenomenon can be mainly ascribed to two aspects: on one hand, it could be attributed to the interaction between the hydroxyl groups of SN and the sulfonic acid groups of Nafion [7,42] ; on the other hand, the crosslinking between SN and the polymer chains limits the mobility of the Nafion chains [43] . In addition, some of the Nafion chains with large flexible stretching space are replaced by stiff SN, which is also the reason for the decrease of membrane SR.…”

Section: Resultsmentioning

confidence: 99%

A phosphotungstic acid coupled silica-Nafion composite membrane with significantly enhanced ion selectivity for vanadium redox flow battery

Yang

Zhao

Goh

et al. 2020

Journal of Energy Chemistry

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Section: Resultsmentioning

confidence: 99%

A phosphotungstic acid coupled silica-Nafion composite membrane with significantly enhanced ion selectivity for vanadium redox flow battery

Yang

Zhao

Goh

et al. 2020

Journal of Energy Chemistry

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“…There has been considerable interest, driven by the long lifetime and increasing ionic conductivity of energy storage devices, to develop a new generation of electrolyte materials as advanced electrolytes and replace the conventional electrolyte used in many applications . Solid polymer electrolytes are increasingly gaining interest in order to use as advanced electrolyte materials for a wide range of applications such as fuel cells, batteries, sensors, and other energy supply systems . In this case, the performances of solid polymer electrolytes as electrolyte materials is affected by their ionic conductivity, electrical insulating, mechanical, and electrochemical properties.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, there is an enormous request especially for polyvinylidene fluoride (PVDF) and its copolymers to prepare superior PEM for PEMFC application . An account of a great backbone similarity between PVDF and commercial perfluorinated membranes such as Nafion, Dow, Aciplex, and Flemion membranes, the study of PVDF and its copolymers as a replacement for the costly fluorinated membranes has become one of the research priorities of researchers in the field of PEM.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of PVDF‐based blend membranes as polymer electrolyte membranes in fuel cells: Study of factor affecting the proton conductivity behavior

Ahmadian‐Alam

Mahdavi

2018

Polymers for Advanced Techs

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There is a huge demand especially for polyvinylidene fluoride (PVDF) and its copolymers to provide high performance solid polymer electrolytes for use as an electrolyte in energy supply systems. In this regard, the blending approach was used to prepare PVDF-based proton exchange membranes and focused on the study of factor affecting their proton conductivity behavior. Thus, a series of copolymers consisting of poly (methyl methacrylate) (PMMA), polyacrylonitrile (PAN), and poly(2-acrylamido-2methyl-l-propanesulfonic acid) (PAMPS) as sulfonated segments were synthesized and blended with PVDF matrix in order to create proton transport sites in PVDF matrix.It was found that addition of PMMA-co-PAMPS and PAN-co-PAMPS copolymers resulted in a significant increase in porosity, which favored the water uptake and proton transport at ambient temperature. Furthermore, crystallinity degree of the PVDF-based blend membranes was increased by addition of the related copolymers, which is mainly attributed to formation of hydrogen bonding interaction between PVDF matrix and the synthesized copolymers, and led to a slight decrease in proton conductivity behavior of blend membranes. From impedance data, the proton conductivity of the PVDF/PMMAco-PAMPS and PVDF/PAN-co-PAMPS blend membranes increases to 10 and 8.4 mS cm −1 by adding only 50% of the related copolymer (at 25°C), respectively. Also, the blend membranes containing 30% sulfonated copolymers showed a power density as high as 34.30 and 30.10 mW cm −2 at peak current density of 140 and 79.45 mA cm −2 for the PVDF/PMMA-co-PAMPS and PVDF/PAN-co-PAMPS blend membranes, respectively. A reduction in the tensile strength was observed by the addition of amphiphilic copolymer, whereas the elongation at break of all blend membranes was raised. up, low operation temperature, and simplicity. Polymer electrolyte membrane (PEM), as one of the important parts of a PEMFC, has attracted a considerable attention. The performances of this part of PEMFCs are affected by its proton conductivity, electrical insulating, chemical and thermal stability, electro-osmotic drag coefficient, and good mechanical properties. Perfluorinated polymer membrane, known as Nafion, has been widely used as the proton exchange membrane in PEMFCs due to its excellent performances and stabilities. 6 However, the main limitation of Nafion is its high cost and decreasing proton conductivity at temperature above 100°C and low humidity condition, which limit its application. For this reason, introducing a new polymeric membrane is one of the key issues and research priorities in the field of PEMFCs.Recently, there is an enormous request especially for polyvinylidene fluoride (PVDF) and its copolymers to prepare superior PEM for PEMFC application. 2,7-9 An account of a great backbone similarity between PVDF and commercial perfluorinated membranes such as Nafion, Dow, Aciplex, and Flemion membranes, the study of PVDF and its copolymers as a replacement for the costly fluorinated membranes has become one of the research pri...

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“…PEM play an important role in PEMFCs and provide an ionic pathway for proton conductivity. In addition, these membranes separate the electrodes and prevent the mixing reactant gasses …”

Section: Introductionmentioning

confidence: 99%

A new sulfonated poly(ether sulfone) hybrid with low humidity dependence for high‐temperature proton exchange membrane fuel cell applications

Molavian

Abdolmaleki

Tadavani

et al. 2017

J of Applied Polymer Sci

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A new sulfonated poly(ether sulfone) (PES) hybrid with low humidity dependence was prepared based on a new synthesized PES and Udel as a commercial PES. The PES was synthesized based on a pyridine containing diol which is able to change between pyridine and pyridinium salt forms during the cell performance (acidic condition) and facilitate proton transfer. The presence of nitrogen group increases inter and intramolecular interactions in the membrane and enhance proton hopping mechanism. Thermogravimetrical analysis of PES hybrid shows good thermal stability. Proton conductivity measurements were evaluated on a fuel cell test station, showing that the membrane has better performance under lower humidity (relative humidity 5 60%) compare to the fully hydrated condition (relative humidity 5 100%). The results reveal that proton transfer might be mainly accomplished through proton hopping mechanism at higher temperatures. The membrane also shows significant proton conductivity at 120 8C (about 6.6 mS cm 21 at RH 5 30%).

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Preparation, characterization and properties of PVDF-g-PAMPS/PMMA- co -PAMPS/silica nanoparticle as a new proton exchange nanocomposite membrane

Cited by 51 publications

References 33 publications

A phosphotungstic acid coupled silica-Nafion composite membrane with significantly enhanced ion selectivity for vanadium redox flow battery

A phosphotungstic acid coupled silica-Nafion composite membrane with significantly enhanced ion selectivity for vanadium redox flow battery

Preparation and characterization of PVDF‐based blend membranes as polymer electrolyte membranes in fuel cells: Study of factor affecting the proton conductivity behavior

A new sulfonated poly(ether sulfone) hybrid with low humidity dependence for high‐temperature proton exchange membrane fuel cell applications

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