Polymer electrolyte membranes for the direct methanol fuel cell: A review
The direct methanol fuel cell (DMFC) has the potential to replace lithium-ion rechargeable batteries in portable electronic devices, but currently experiences significant power density and efficiency…
Super proton conductive high-purity nafion nanofibers.
- B. Dong, Liang Gwee, David Salas‐de la Cruz, K. Winey, Y. Elabd
- Materials ScienceNano letters (Print)
- 23 August 2010
The high proton conductivity of a single high-purity Nafion nanofiber (1.5 S/cm), which is an order of magnitude higher than the bulk Nafions, is reported, which should have a significant impact on fuel cells and sensors.
Effect of Nanoscale Morphology on the Conductivity of Polymerized Ionic Liquid Block Copolymers
- R. Weber, Yuesheng Ye, A. L. Schmitt, S. Banik, Y. Elabd, M. Mahanthappa
- Materials Science
- 24 June 2011
Polymerized ionic liquid (POIL) block copolymers represent a unique class of materials for fundamental studies of single ion conduction as a function of morphology in microphase-separated polymer…
Water clustering in glassy polymers.
The failure of the Flory-Huggins theory and Zimm-Lundberg clustering analysis to describe water solubility and water clustering, respectively, in these glassy polymers is in part due to the equilibrium constraints under which these models are derived in contrast to the nonequilibrium state of glassypolymers.
Triblock copolymer ionomer membranes: Part I. Methanol and proton transport
Network Structure and Strong Microphase Separation for High Ion Conductivity in Polymerized Ionic Liquid Block Copolymers
A series of strongly microphase-separated polymerized ionic liquid (PIL) diblock copolymers, poly(styrene-b-1-((2-acryloyloxy)ethyl)-3-butylimidazolium bis(trifluoromethanesulfonyl)imide)…
Polymerized Ionic Liquids: The Effect of Random Copolymer Composition on Ion Conduction
Ionic conductivity in new polymerized ionic liquids is of great interest as it applies to solid-state electrolytes for electrochemical and electromechanical applications. In this study, an ionic…
Non-Fickian Diffusion of Water In Nafion
Understanding the dynamics of water in solid-state polymer electrolytes (e.g., Nafion) is important for a variety of applications ranging from membrane-based water purification to hydrogen fuel…
Diffusion and sorption of methanol and water in Nafion using time-resolved Fourier transform infrared-attenuated total reflectance spectroscopy.
The data obtained in this study reveal that the main contribution to the increase in meethanol flux is due to methanol sorption in the membrane.
Block Copolymers for Fuel Cells
Ion-containing block copolymers hold promise as next-generation proton exchange membranes in hydrogen and methanol fuel cells. These materials’ self-assembled ordered nanostructures facilitate proton…