Results 31 to 40 of about 3,204,747 (298)

Investigation of the corrosion stability of stainless steels under simulated low and high temperature proton exchange membrane fuel cell operating conditions

open access: yes, 2022
S.747-755Stainless steels for low and high temperature proton exchange membrane fuel cell present several advantages over graphitic materials. The fabrication of bipolar plates from these kinds of alloys could reduce weight of the stack and provide high ...
Tübke, J.   +4 more
core   +1 more source

Preparation and Application of Aromatic Polymer Proton Exchange Membrane with Low-Sulfonation Degree

open access: yesInternational Journal of Chemical Engineering, 2020
4,4′-Dichlorodiphenylsulfone-3,3′-disulfonic acid (disodium) salt and 4,4′-difluorodiphenylsulfone were used as sulfonated monomer. 4,4′-Fluorophenyl sulfones were used as the nonsulfonated monomer.
Yushan Gao   +3 more
doaj   +1 more source

Hydrogen Leakage Diagnosis for Proton Exchange Membrane Fuel Cell Systems: Methods and Suggestions on Its Application in Fuel Cell Vehicles

open access: yesIEEE Access, 2020
Proton exchange membrane fuel cell vehicles using hydrogen as fuel has become one of the key development directions in the field of new energy vehicles.
Ying Tian, Qiang Zou, Zezhao Lin
doaj   +1 more source

Suppression of Methanol and Formate Crossover through Sulfanilic‐Functionalized Holey Graphene as Proton Exchange Membranes

open access: yesAdvanced Science, 2023
Proton exchange membranes with high proton conductivity and low crossover of fuel molecules are required to realize advanced fuel‐cell technology. The selective transportation of protons, which occurs by blocking the transportation of fuel molecules ...
Samuel Jeong   +5 more
doaj   +1 more source

Improved Model Predictive Control for a Proton Exchange Membrane Fuel Cell

open access: yesInternational Journal of Electrochemical Science, 2012
Proton exchange membrane fuel cells are promising energy sources. Because of their time-change, uncertainty, strong-coupling and nonlinear characteristics, proton exchange membrane fuel cells present complex control challenges.
Liping Fan   +3 more
doaj   +1 more source

Electrostatically localized proton bioenergetics: better understanding membrane potential

open access: yesHeliyon, 2019
In Mitchell's chemiosmotic theory, membrane potential Δψ was given as the electric potential difference across the membrane. However, its physical origin for membrane potential Δψ was not well explained.
James Weifu Lee
doaj   +1 more source

Magnetic field alignment of stable proton-conducting channels in an electrolyte membrane

open access: yesNature Communications, 2019
Proton exchange membranes with short-pathway through-plane proton conductivity are attractive for proton exchange membrane fuel cells. Here the authors align proton conducting channels orthogonal to the plane of composite proton exchange membranes using ...
Xin Liu   +12 more
doaj   +1 more source

Research on the Influence of Ripple Voltage on the Performance of a Proton Exchange Membrane Electrolyzer

open access: yesEnergies, 2023
The power quality of hydrogen production converters is related to the characteristics of electrolytic hydrogen production, which is crucial to efficiency, power loss and other performance factors of hydrogen production.
Tianze Yuan   +3 more
doaj   +1 more source

Composite membranes for proton exchange membrane fuel cells based on methyl methacrylate-co-maleimide /phosphotungstic acid [PDF]

open access: yesشیمی کاربردی روز, 2018
Poly(methyl methacrylate-co-nitrophenyl maleimide) (MMA-co-NMI) and poly(methyl‌‌‌‌ methacrylate-co-hydroxyphenyl maleimide)‌‌‌‌‌ (MMA-co-HMI) copolymers were synthesized using free radical polymerization of MMA with a new MI monomer containing phenyl ...
zahra seidzadeh   +3 more
doaj   +1 more source

Surface-coupled proton exchange of a membrane-bound proton acceptor [PDF]

open access: yesProceedings of the National Academy of Sciences, 2010
Proton-transfer reactions across and at the surface of biological membranes are central for maintaining the transmembrane proton electrochemical gradients involved in cellular energy conversion. In this study, fluorescence correlation spectroscopy was used to measure the local protonation and deprotonation rates of single pH ...
Sandén, Tor   +3 more
openaire   +3 more sources

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