Results 171 to 180 of about 161,382 (189)
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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 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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Sulfonated polyether ether ketone (sPEEK) membranes for high long-term stability
Fuel Cells Bulletin, 2002openaire +1 more source