Association of Nafion with Polypyrrole Nanoparticles in a Hydrophilic Polymer Network: Effects on Proton Transport

Hong, Liang; Zhou, Yujie; Chen, Ningping; Li, Kun

doi:10.1006/jcis.1999.6385

Cited by 16 publications

(11 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The polypyrrole sample was prepared by oxidation with ammonium peroxodisulfate, and it is denoted PPy-S. Its ATR-FTIR spectrum shows the band characteristic of asymmetric C=C and symmetric C-C stretching vibrations of the pyrrole ring at ca. C-H and C-N at 1,050 cm ±1 and the C-C deformation at 974 cm ±1 appear at the same frequencies as the intense C-F absorption bands of Nafion [22].…”

Section: Characterisation By Atr Ftirmentioning

confidence: 81%

Chemical Modification of Perfluorosulfo‐nated Membranes with Pyrrole for Fuel Cell Application: Preparation, Characteri‐sation and Methanol Transport

Innocent²,

Bonnet

et al. 2005

Fuel Cells

View full text Add to dashboard Cite

In situ chemical polymerisation of pyrrole in Nafion®‐115 membranes produces a composite material that shows a decrease in methanol crossover compared with the non‐modified material, and a good protonic conduction (area resistance of 0.65 Ω cm2). Pyrrole is impregnated from an appropriate solvent, and the choice of oxidising agent (hydrogen peroxide, ammonium peroxodisulfate) provides two types of modified membrane. Membrane characterisation using infrared spectroscopy shows the presence of pyrrole oligomers and polymer, but the proton conductivity is lower than that of the Nafion®‐115 membrane by only a factor 2–3. Methanol transport measurements in 2 mol dm–3 methanol with and without application of an electric field show ca. 30% lower crossover for the pyrrole‐modified membranes. In single cell hydrogen – oxygen fuel cell tests, the pyrrole‐modified Nafion® prepared using hydrogen peroxide oxidant gave higher open circuit voltage and current density, in particular at > 80 °C, than non‐modified Nafion®‐115.

show abstract

Section: Characterisation By Atr Ftirmentioning

confidence: 81%

Chemical Modification of Perfluorosulfo‐nated Membranes with Pyrrole for Fuel Cell Application: Preparation, Characteri‐sation and Methanol Transport

Innocent²,

Bonnet

et al. 2005

Fuel Cells

View full text Add to dashboard Cite

show abstract

“…The Nafion polymer functionally interacted with its environment, whereas perfluorinated polymers were valued for their inertness. A number of excellent review articles exist covering the subject of perfluorinated ionomer membranes with emphasis on transport processes,21, 22 applications,23 and structural studies and physical properties 18, 24–26…”

Section: Fuel Cellsmentioning

confidence: 99%

Recent Progress on Nafion‐Based Nanocomposite Membranes for Fuel Cell Applications

Cele

Ray

2009

Macro Materials & Eng

120

View full text Add to dashboard Cite

Proton exchange membrane fuel cells (PEMFCs) have attracted tremendous attention because of their high efficiency compared to other types of fuel cells. Nafion is the most commonly used polymer for membranes used in PEMFCs. A large variety of nanoparticles of different natures and sizes can be blended with a Nafion matrix, generating a new class of nanostructured electrolyte membrane with interesting physical properties. In this paper, we discuss the recent progress in the field of Nafion‐based nanocomposite membranes. They exhibit a significant improvement in thermo‐mechanical and thermal stability as well as proton conductivity at very low filler contents. The preparation, characterization, and properties of various types of Nafion‐based nanocomposite membranes are critically reviewed, and detailed examples are summarized.magnified image

show abstract

“…T g, ion = 150-200 • C, reflecting the energy needed to loosen the association of the pendant sulfonic acid groups [29], and T g, seg around 100 • C, reflecting energy required to drive segment motions along the perfluoro backbone of Nafion [30,31]. With dispersing 0.5% POAc in the Nafion matrix, the T g, seg moves up apparently and merges partially with T g, ion that shifts slightly to lower temperature.…”

Section: Characterizations Of the Nafion-poac Composite Membranesmentioning

confidence: 91%

Substituted poly(p-phenylene) oligomer as a physical crosslinker in Nafion® membrane

Guo

Liu

Hong

2011

Journal of Membrane Science

Self Cite

View full text Add to dashboard Cite

Association of Nafion with Polypyrrole Nanoparticles in a Hydrophilic Polymer Network: Effects on Proton Transport

Cited by 16 publications

References 9 publications

Chemical Modification of Perfluorosulfo‐nated Membranes with Pyrrole for Fuel Cell Application: Preparation, Characteri‐sation and Methanol Transport

Chemical Modification of Perfluorosulfo‐nated Membranes with Pyrrole for Fuel Cell Application: Preparation, Characteri‐sation and Methanol Transport

Recent Progress on Nafion‐Based Nanocomposite Membranes for Fuel Cell Applications

Substituted poly(p-phenylene) oligomer as a physical crosslinker in Nafion® membrane

Contact Info

Product

Resources

About