Effect of preparative parameters on the characteristic of poly(vinylidene fluoride)-based microporous layer for proton exchange membrane fuel cells

A new method based on a solution graft technique was used to prepare poly (vinylidene fluoride) grafted polystyrene sulfonated acid (PVDF-g-PSSA) proton exchange membrane. Polystyrene is grafted into PVDF modified by plain sodium silicate (Na4SiO4). There is a linear relationship between the degree of grafting and the content of Na4SiO4. Fourier transform infrared spectroscopy is used to characterize changes of the membrane's microstructures after grafting and sulfonation. The morphology of the membrane's microstructures after grafting and sulfonation is studied by scanning electrolytic microscope (SEM). The effect of plain sodium silicate (Na4SiO4) concentration and relative humidity on the conductivity of the electrolyte was investigated by the impedance at room temperature. The results show that the styrene has been grafted into PVDF. The conductivity of PVDF-g-PSSA electrolyte doped 10% plain sodium silicate (Na4SiO4) is 0.016 S/cm at room temperature. The conductivity of the electrolyte changes slightly at a relative humidity range of 20%-70%. The weightlessness of PVDF-g-PSSA electrolyte heated to 40°C was less than 2%, which indicated that water capacity was good.

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Development of a Self-supporting Microporous Layer on a Metal Mesh for Carbon Backing-free Cathodes in Proton Exchange Membrane Fuel Cells

Fuel Cells ◽

10.1002/fuce.201700139 ◽

2018 ◽

Vol 18 (1) ◽

pp. 57-62 ◽

Cited By ~ 3

Author(s):

D. Joo ◽

S. M. Jin ◽

J. H. Jang ◽

S. Park

Keyword(s):

Fuel Cells ◽

Proton Exchange Membrane ◽

Proton Exchange ◽

Microporous Layer ◽

Metal Mesh ◽

Carbon Backing ◽

Exchange Membrane

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Laser-induced graphene as the microporous layer in proton exchange membrane fuel cells

Applied Surface Science ◽

10.1016/j.apsusc.2019.144096 ◽

2020 ◽

Vol 504 ◽

pp. 144096 ◽

Cited By ~ 4

Author(s):

Athanasios Tiliakos ◽

Alexandra M.I. Trefilov ◽

Eugenia Tanasă ◽

Adriana Balan ◽

Ioan Stamatin

Keyword(s):

Fuel Cells ◽

Proton Exchange Membrane ◽

Proton Exchange ◽

Microporous Layer ◽

Exchange Membrane

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Structure and Morphology of PVDF-G-PAMPS Membrane

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.197-198.1321 ◽

2011 ◽

Vol 197-198 ◽

pp. 1321-1324 ◽

Cited By ~ 2

Author(s):

Gui Bao Guo ◽

Sheng Li An

Keyword(s):

Fourier Transform ◽

Infrared Spectroscopy ◽

Sulfonic Acid ◽

Proton Exchange Membrane ◽

Vinylidene Fluoride ◽

Proton Exchange ◽

Pvdf Membrane ◽

Structure And Morphology ◽

Poly Vinylidene Fluoride ◽

Exchange Membrane

A proton exchange membrane of blended poly (acrylamido-2- methylpropane sulfonic acid) (PAMPS) grafted onto modified poly (vinylidene fluoride) (PVDF) membrane (PVDF-g-PAMPS) was prepared. Fourier transform infrared spectroscopy is used to characterize changes of the membrane's microstructures after grafting. The morphology of the membrane's microstructures after grafting is studied by scanning electrolytic microscope.The results show that 2-acrylamido-2-methylpropane sulfonic acid is easily grafted into PVDF modified by Plain sodium silicate (Na4SiO4).

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Influencing Factors of Modified PVDF Grafted onto a Blended PAMPS(PVDF-G-PAMPS) Membrane

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.197-198.1267 ◽

2011 ◽

Vol 197-198 ◽

pp. 1267-1270

Author(s):

Jia Xu ◽

Gui Bao Guo ◽

Sheng Li An

Keyword(s):

Reaction Temperature ◽

Proton Exchange Membrane ◽

Vinylidene Fluoride ◽

Ammonium Persulfate ◽

Proton Exchange ◽

Reaction Conditions ◽

Membrane Conductivity ◽

Poly Vinylidene Fluoride ◽

Exchange Membrane ◽

Optimal Reaction

A proton exchange membrane of blended poly (acrylamido-2- methylpropane sulfonic acid) grafted onto modified poly (vinylidene fluoride) membrane (PVDF-g-PAMPS) was prepared The influences of Na4SiO4 content, reaction temperature and time, content of ammonium persulfate and AMPS on PVDF-g-PAMPS membrane were discussed. The results show that the optimal reaction conditions are as follows: Na4SiO4 is 8%; ammonium persulfate is 0.016 mol / L; AMPS is 30 %; the reaction temperature is 80 °C and the reaction time is 1h. On the condition, PVDF-g-PAMPS membrane conductivity can reach to 1.27×10-2 S/cm.

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