Results 171 to 180 of about 1,493 (193)
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MRS Proceedings, 2005
ABSTRACTComposite membranes, prepared by mixing sulfonated polyether ether ketone (SPEEK) and WO3·2H2O in dimethylacetamide, were characterized by Thermogravimetry, Electrochemical Impedance Spectroscopy and Water Uptake measurements to evaluate their possible performance as proton exchange membranes (PEM).
MECHERI, BARBARA +5 more
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ABSTRACTComposite membranes, prepared by mixing sulfonated polyether ether ketone (SPEEK) and WO3·2H2O in dimethylacetamide, were characterized by Thermogravimetry, Electrochemical Impedance Spectroscopy and Water Uptake measurements to evaluate their possible performance as proton exchange membranes (PEM).
MECHERI, BARBARA +5 more
openaire +3 more sources
Macromolecular Materials and Engineering, 2016 Appropriate membrane for blood contacting applications requires hemocompatibility and high permeation flux; it should inhibit proteins or platelets adsorption and still possess high permeability. Aiming to improve the polyethersulfone (PES) hollow fiber membrane hemocompatibility, sulfonated polyether ether ketone (SPEEK) is self‐synthesized in the ...
Esmaeil Salimi +2 more
exaly +2 more sources
AIP Conference Proceedings, 2013
A simple and effective method for the preparation of sulfonated polyether ether ketone (SPEEK) based composites with electrochemical reduced graphene oxide (EGO) as inorganic fillers has been described. The resulting dispersions are homogeneous and the cast membranes show significant improvement on tensile strength and thermal properties.
S. Seetharaman +2 more
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A simple and effective method for the preparation of sulfonated polyether ether ketone (SPEEK) based composites with electrochemical reduced graphene oxide (EGO) as inorganic fillers has been described. The resulting dispersions are homogeneous and the cast membranes show significant improvement on tensile strength and thermal properties.
S. Seetharaman +2 more
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Electrochimica Acta, 2017
Abstract Solid polymer electrolytes based on a novel comb-like copolymer, polyethylene glycol-grafted sulfonated polyether ether ketone (SPEEK- g -PEG), was designed and synthesized through the reaction between partially hydroxyl-functionalized sulfonated polyether ether ketone (SPEEK) and epoxy-functionalized PEG.
Menglan Zhang, Ji Hu, Xiaoen Wang
exaly +2 more sources
Abstract Solid polymer electrolytes based on a novel comb-like copolymer, polyethylene glycol-grafted sulfonated polyether ether ketone (SPEEK- g -PEG), was designed and synthesized through the reaction between partially hydroxyl-functionalized sulfonated polyether ether ketone (SPEEK) and epoxy-functionalized PEG.
Menglan Zhang, Ji Hu, Xiaoen Wang
exaly +2 more sources
Journal of Materials Science Letters, 2003
Direct methanol fuel cells (DMFC) have attracted considerable attention, since they offer numerous benefits, such as high efficiency, high power density, low or zero emissions and reliability. The proton exchange membrane (PEM) is one of the most critical components in the direct methanol fuel cell. Generally, PEMs with high proton conductivity and low
Lei Li, Jun Zhang, Yuxin Wang
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Direct methanol fuel cells (DMFC) have attracted considerable attention, since they offer numerous benefits, such as high efficiency, high power density, low or zero emissions and reliability. The proton exchange membrane (PEM) is one of the most critical components in the direct methanol fuel cell. Generally, PEMs with high proton conductivity and low
Lei Li, Jun Zhang, Yuxin Wang
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Journal of Power Sources, 2014
In an attempt to reduce the Li+ concentration polarization and electrolyte depletion from the electrode porous space, sulfonated polyether ether ketone with pendant lithiated fluorinated sulfonic groups (SPEEK-FSA-Li) is prepared and attempted as ionic conductivity binder.
Zengbin Wei +5 more
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In an attempt to reduce the Li+ concentration polarization and electrolyte depletion from the electrode porous space, sulfonated polyether ether ketone with pendant lithiated fluorinated sulfonic groups (SPEEK-FSA-Li) is prepared and attempted as ionic conductivity binder.
Zengbin Wei +5 more
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Journal of Applied Polymer Science, 2020
AbstractThe effects of sulfonated polyether sulfone (s‐PSF) with different sulfonation degrees on the interfacial properties of carbon fiber (CF)/poly(ether‐ether‐ketone) (PEEK) composites were investigated systematically. The performance of the modified CF and the corresponding CF/PEEK composites and was tested and characterized.
Tianning Ren, Guangming Zhu, Xiao Hou
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AbstractThe effects of sulfonated polyether sulfone (s‐PSF) with different sulfonation degrees on the interfacial properties of carbon fiber (CF)/poly(ether‐ether‐ketone) (PEEK) composites were investigated systematically. The performance of the modified CF and the corresponding CF/PEEK composites and was tested and characterized.
Tianning Ren, Guangming Zhu, Xiao Hou
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Morphology Effect on Proton Dynamics in Nafion®117 and Sulfonated Polyether Ether Ketone
Journal of the Physical Society of Japan, 2016We report results of our experimental and theoretical studies on the dynamics of proton conductivity in Nafion® 117 and self-fabricated sulfonated polyether ether ketone (SPEEK) membranes. Knowing that the presence of water molecules in the diffusion process results in a lower energy barrier, we determined the diffusion barriers and corresponding ...
Jun Xing Leong +4 more
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