Results 221 to 230 of about 38,234 (262)
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International Journal of Hydrogen Energy, 2011
Abstract In this study, functionalized titania nanotubes (F-TiO2-NT) were synthesized by using 3-mercaptopropyl-tri-methoxysilane (MPTMS) as a sulfonic acid functionalization agent. These F-TiO2-NT were investigated for potential application in high temperature hydrogen polymer electrolyte membrane fuel cells (PEMFCs), specifically as an additive to ...
Yu Jun +3 more
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Abstract In this study, functionalized titania nanotubes (F-TiO2-NT) were synthesized by using 3-mercaptopropyl-tri-methoxysilane (MPTMS) as a sulfonic acid functionalization agent. These F-TiO2-NT were investigated for potential application in high temperature hydrogen polymer electrolyte membrane fuel cells (PEMFCs), specifically as an additive to ...
Yu Jun +3 more
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Journal of Materials Chemistry A, 2014
A novel asymmetric polybenzimidazole (PBI) membrane used for high temperature proton exchange membrane fuel cells has been successfully fabricated by a soft-template method using the ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMIM][TFSI]) as the porogen.
Li-Cheng Jheng +3 more
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A novel asymmetric polybenzimidazole (PBI) membrane used for high temperature proton exchange membrane fuel cells has been successfully fabricated by a soft-template method using the ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMIM][TFSI]) as the porogen.
Li-Cheng Jheng +3 more
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International Journal of Hydrogen Energy, 2012
Abstract The crosslinked polybenzimidazole (PBI) proton exchange membrane is prepared by blending the epoxy (diglycidyl ether bisphenol-A) resin in the PBI with an imidazole–NH/epoxide Eqv. no. ratio ranging from 20/1 to 6/1. We show that the mechanical properties of the PBI membrane are improved by introducing a small quantity of crosslinks in the ...
Hsiu-Li Lin +3 more
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Abstract The crosslinked polybenzimidazole (PBI) proton exchange membrane is prepared by blending the epoxy (diglycidyl ether bisphenol-A) resin in the PBI with an imidazole–NH/epoxide Eqv. no. ratio ranging from 20/1 to 6/1. We show that the mechanical properties of the PBI membrane are improved by introducing a small quantity of crosslinks in the ...
Hsiu-Li Lin +3 more
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Solid acid membranes for high temperature (¿140° C) proton exchange membrane fuel cells
Journal of Power Sources, 2005Proton exchange membrane fuel cells (PEMFCs) are an exciting clean energy technology for power delivery for a range of devices from automotive applications through to portable digital equipment. Current technology for PEMFCs is limited by its inability to operate at high temperatures which is particularly desirable for automotive applications.
Hogarth, Warren H. J. +2 more
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Journal of Membrane Science, 2012
Abstract A cross-linked network is obtained by an end-group cross-linkable PBI (E-PBI) and 4,4′-diglycidyl (3,3′,5,5′-tetramethylbiphenyl) epoxy resin (TMBP). The formation of the network is proved by FT-IR and gel fraction test. Then, high temperature proton exchange membranes are constructed by incorporating the cross-linked network into poly(2,2′-(
Mingyu Li +8 more
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Abstract A cross-linked network is obtained by an end-group cross-linkable PBI (E-PBI) and 4,4′-diglycidyl (3,3′,5,5′-tetramethylbiphenyl) epoxy resin (TMBP). The formation of the network is proved by FT-IR and gel fraction test. Then, high temperature proton exchange membranes are constructed by incorporating the cross-linked network into poly(2,2′-(
Mingyu Li +8 more
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Dynamic Model of the High Temperature Proton Exchange Membrane Fuel Cell Stack Temperature
Journal of Fuel Cell Science and Technology, 2009The present work involves the development of a model for predicting the dynamic temperature of a high temperature proton exchange membrane (HTPEM) fuel cell stack. The model is developed to test different thermal control strategies before implementing them in the actual system.
Andreasen, Søren Juhl +1 more
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Proton exchange membrane fuel cell from low temperature to high temperature: Material challenges
Journal of Power Sources, 2007Abstract Proton exchange membrane fuel cell (PEMFC) is considered as one promising clean and highly efficient power generation technology in 21st century. Current PEMFC operating at low temperatures (
Yuyan Shao +3 more
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A New Type of High Temperature Membrane for Proton Exchange Membrane Fuel Cells
ASME 2006 Fourth International Conference on Fuel Cell Science, Engineering and Technology, Parts A and B, 2006The proton exchange membrane (PEM) fuel cell operated at high temperature is advantageous than the current low temperature PEM fuel cell, in that high temperature operation promotes electro-catalytic reaction, reduces the carbon monoxide poisoning, and possibly eliminates methanol crossover in Direct Methanol Fuel Cell (DMFC).
Jinjun Shi, Jiusheng Guo, Bor Jang
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High-temperature proton exchange membrane—an insight
2022Sundararajan Ramakrishnan +2 more
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Frontispiece: Phosphoric‐Acid Retention in High‐Temperature Proton‐Exchange Membranes
Chemistry – A European Journal, 2022Hongying Tang +4 more
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