Results 131 to 140 of about 458 (155)
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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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International Journal of Hydrogen Energy, 2019
Abstract A model of a membrane-electrode assembly (MEA) with a Sulfonated Poly Ether-Ether Ketone (SPEEK) membrane is presented and compared with Nafion membrane MEA. The model used the specific hydration and proton conductivity curves developed for SPEEK membrane and accounted for feed-gas momentum and mass transfer, electro-potential in both the ...
Aida Karimi +2 more
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Abstract A model of a membrane-electrode assembly (MEA) with a Sulfonated Poly Ether-Ether Ketone (SPEEK) membrane is presented and compared with Nafion membrane MEA. The model used the specific hydration and proton conductivity curves developed for SPEEK membrane and accounted for feed-gas momentum and mass transfer, electro-potential in both the ...
Aida Karimi +2 more
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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 Polymer Science Part B: Polymer Physics, 2000
The influence of blending with polyetherimide (PEI) and doping with HCl and H3PO4 on the properties of sulfonated polyether ether ketone (SPEEK) was studied. Blending with PEI first results in an increase and then in a decrease in membrane swelling at PEI concentrations greater than 5%.
Mikhailenko, SD +2 more
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The influence of blending with polyetherimide (PEI) and doping with HCl and H3PO4 on the properties of sulfonated polyether ether ketone (SPEEK) was studied. Blending with PEI first results in an increase and then in a decrease in membrane swelling at PEI concentrations greater than 5%.
Mikhailenko, SD +2 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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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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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.
Xiaolin Xie, Xiaoen Wang, Zhigang Xue
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.
Xiaolin Xie, Xiaoen Wang, Zhigang Xue
exaly +2 more sources
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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