Fabrication of the porous polyimide film as a matrix of the composite membrane of the direct methanol fuel cell

Nguyen, Tien Hoa; Wang, Xin

doi:10.1016/j.seppur.2009.03.014

Cited by 16 publications

(9 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A PEM with water uptake less than 50% is considered stable and low degree of swelling [42]. Hence, it can be concluded that the swelling effect on SP/e-spunCL15 and SP/e-spunCL25 can be considered as low degree of swelling.…”

Section: Resultsmentioning

confidence: 99%

Performance of Void-Free Electrospun SPEEK/Cloisite as a Function of Degree of Dispersion State on Nanocomposite Proton Exchange Membrane for Direct Methanol Fuel Cell Application

et al. 2019

View full text Add to dashboard Cite

One of the main problems in direct methanol fuel cell (DMFC) application is methanol crossover. In order to solve the problem, an exfoliated void-free electrospun Sulfonated Poly(Ether Ether Ketone) (SPEEK)/cloisite nanocomposite membrane was developed. The membrane was prepared by immersing electrospun SPEEK/cloisite fiber mats onto incomplete solidified SPEEK polymer matrix. A well dispersed and reduction size of cloisite particles that ranges from 0.29–0.39 µm was observed by using Scanning Electron Microscopy Analysis (SEM) and Atomic Force Microscope (AFM). The effect of the morphology of the composite membrane in terms of degree of dispersion state of the Cloisite on the membrane performance was discussed. SP/e-spunCL15 with fully exfoliated structure exhibited the highest performance as compared to other tested membranes and Nafion® 115 with current density of 1042.2 mAcm−2 and power density of 1.18 mWcm−2. Improved morphological, dimensional change properties, and performance assigned to well-dispersed cloisite15A induced by the electrospinning technique make the membranes more efficient for direct methanol fuel cell applications.

show abstract

Section: Resultsmentioning

confidence: 99%

Performance of Void-Free Electrospun SPEEK/Cloisite as a Function of Degree of Dispersion State on Nanocomposite Proton Exchange Membrane for Direct Methanol Fuel Cell Application

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The porous substrate must be completely inert to the fuel and mechanically strong to prevent excess swelling of the filling polymer, which can otherwise lead to high methanol crossover [16]. A limited number of materials can be processed to obtain porous frameworks, and among them stand out polyimide (PI) [16,17], polytetrafluoroethylene (PTFE/Teflon ® ) [18] and ultra-high molecular weight polyethylene (UHMWPE) [19]. Unfortunately, lack of functional groups and difficulty to functionalize the surface of those substrates can result in weak interfaces between both polymer phases thus affecting the long-term stability as it has been reported for a PTFE/Nafion ® system [20].…”

Section: Introductionmentioning

confidence: 99%

Nanocomposite SPEEK-based membranes for Direct Methanol Fuel Cells at intermediate temperatures

Mollá

Compañ

2015

Journal of Membrane Science

View full text Add to dashboard Cite

Novel nanocomposite membranes were prepared by infiltration of a blend of sulfonated PEEK (SPEEK) with polyvinyl alcohol (PVA), using water as solvent, into electrospun nanofibers of SPEEK blended with polyvinyl butyral (PVB). The membranes were characterized for their application on Direct Methanol Fuel Cells (DMFCs) operating at moderate temperatures (>80 ºC). An important role of the solvent on the crosslinking temperature for the SPEEK-PVA system was observed. A mat of hydrated SPEEK-30%PVB nanofibers revealed a higher proton conductivity in comparison with a dense membrane of similar composition. Incorporation of the nanofiber mats to the SPEEK-35%PVA matrix provided mechanical stability, methanol barrier properties and certain proton conductivity up to a crosslinking temperature of 120 ºC. Not remarkable effect of the nanofibers was found above that crosslinking temperature. The combined effect of the nanofibers and crosslinking temperature on the properties of the membranes is discussed. DMFC performance experiments concluded promising results for this new low-cost type of membranes, although further optimization steps are still required.

show abstract

“…The host membrane or substrate should have a higher mechanical strength in order to prevent swelling during the impregnation process. Having said that, the formation of porous membranes by phase inversion techniques mainly depend on both aspects of the thermodynamic and kinetic factors of the polymer, solvent, and non-solvent [56]. Next, for selectivity purposes, the porosity of the membrane is considered to be an important factor in the delivery of a good matrix for composite pore-filled membranes [56].…”

Section: Pore-filling Electrolyte Membranesmentioning

confidence: 99%

“…These solvents will, essentially, induce finger-like structures in the membrane when immediately immersed in a coagulant bath (non-solvent). On the other hand, a solvent with a low affinity to the non-solvent, such as tetrahydrofuran (THF) could provide a spongy structure with a dense or partially porous top layer [56]. To prove this, Nguyen and Wang [56], in their study, synthesized porous co-polyimide from different monomers of 3,3 ,4,4 -biphenyltetracarboxylicbdianhydride (SBPDA), p-phenylenediamine (PPDA) and 4,4 -oxydianiline (ODA) using NMP as a solvent.…”

Section: Pore-filling Electrolyte Membranesmentioning

confidence: 99%

“…On the other hand, a solvent with a low affinity to the non-solvent, such as tetrahydrofuran (THF) could provide a spongy structure with a dense or partially porous top layer [56]. To prove this, Nguyen and Wang [56], in their study, synthesized porous co-polyimide from different monomers of 3,3 ,4,4 -biphenyltetracarboxylicbdianhydride (SBPDA), p-phenylenediamine (PPDA) and 4,4 -oxydianiline (ODA) using NMP as a solvent. However, in their study, to get the sponge-like structure, 1-butanol was used as a non-solvent in order to delay the demixing process.…”

Section: Pore-filling Electrolyte Membranesmentioning

confidence: 99%

See 1 more Smart Citation

Performance of Polymer Electrolyte Membrane for Direct Methanol Fuel Cell Application: Perspective on Morphological Structure

et al. 2020

View full text Add to dashboard Cite

Membrane morphology plays a great role in determining the performance of polymer electrolyte membranes (PEMs), especially for direct methanol fuel cell (DMFC) applications. Membrane morphology can be divided into two types, which are dense and porous structures. Membrane fabrication methods have different configurations, including dense, thin and thick, layered, sandwiched and pore-filling membranes. All these types of membranes possess the same densely packed structural morphology, which limits the transportation of protons, even at a low methanol crossover. This paper summarizes our work on the development of PEMs with various structures and architecture that can affect the membrane’s performance, in terms of microstructures and morphologies, for potential applications in DMFCs. An understanding of the transport behavior of protons and methanol within the pores’ limits could give some perspective in the delivery of new porous electrolyte membranes for DMFC applications.

show abstract

Fabrication of the porous polyimide film as a matrix of the composite membrane of the direct methanol fuel cell

Cited by 16 publications

References 10 publications

Performance of Void-Free Electrospun SPEEK/Cloisite as a Function of Degree of Dispersion State on Nanocomposite Proton Exchange Membrane for Direct Methanol Fuel Cell Application

Performance of Void-Free Electrospun SPEEK/Cloisite as a Function of Degree of Dispersion State on Nanocomposite Proton Exchange Membrane for Direct Methanol Fuel Cell Application

Nanocomposite SPEEK-based membranes for Direct Methanol Fuel Cells at intermediate temperatures

Performance of Polymer Electrolyte Membrane for Direct Methanol Fuel Cell Application: Perspective on Morphological Structure

Contact Info

Product

Resources

About