Results 61 to 70 of about 179,969 (212)

Proton conductivity of Nafion-azolebisphosphonates membranes for PEM fuel cells [PDF]

open access: yes, 2018
Energy systems with cleaner and sustainable sources are crucial challenges of the 21st century to deal with the environmental threat of global warming and the declining reserves of fossil fuels.
Rangel, Carmen M.   +3 more
core   +1 more source

Design of experiment study of the parameters that affect performance of three flow plate configurations of a proton exchange membrane fuel cell [PDF]

open access: yes, 2010
Low temperature hydrogen fuel cells are electrochemical devices which offer a promising alternative to traditional power sources. Fuel cells produce electricity with a reaction of the fuel (hydrogen) and air. Fuel cells have the advantage of being clean;
Carton, James, Olabi, Abdul-Ghani
core   +1 more source

Proton transport for fuel cells [PDF]

open access: yes, 2010
No ...
Haile, Sossina M., Pintauro, Peter N.
core   +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-sensitive ...
Sandén, Tor   +3 more
openaire   +3 more sources

QM/MM Dynamics of Proton Transport in Chitosan/Phosphotungstic Acid Composite Membrane for Direct Methanol Fuel Cell [PDF]

open access: yes, 2015
The aim of this research is to study proton transport in DMFC using chitosan/phosphotungstic acid (CS/PWA) composite membrane as Proton Exchange Membrane (PEM). Model of proton transport mechanism was proposed in order to investigate the proton transport
Sundarti, L. W. (Linda)
core  

Matrix-free calcium in isolated chromaffin vesicles [PDF]

open access: yes, 1985
Isolated secretory vesicles from bovine adrenal medulla contain 80 nmol of Ca2+ and 25 nmol of Mg2+ per milligram of protein. As determined with a Ca2+-selective electrode, a further accumulation of about 160 nmol of Ca2+/mg of protein can be attained ...
Bashford L. C.   +35 more
core   +2 more sources

Three-dimensional simulation of a new cooling strategy for proton exchange membrane fuel cell stack using a non-isothermal multiphase model [PDF]

open access: yes, 2019
In this study, a new cooling strategy for a proton exchange membrane (PEM) fuel cell stack is investigated using a three-dimensional (3D) multiphase non-isothermal model.
Jiao, K, Wang, Y, Yuan, H, Zhang, G
core  

Polymer Electrolyte Membrane Fuel Cell Performance of a Sulfonated Poly(Arylene Ether Benzimidazole) Copolymer Membrane

open access: yesAdvances in Materials Science and Engineering, 2016
Disodium-3,3′-disulfonate-4,4′-dichlorodiphenylsulfone (SDCDPS) and 5,5′-bis[2-(4-hydroxyphenyl)benzimidazole] (HPBI) monomers were synthesized. Binding these monomers via nucleophilic aromatic polycondensation reaction, a sulfonated poly(arylene ether ...
Hasan Ferdi Gerçel   +2 more
doaj   +1 more source

Two-phase flow dynamics in the gas diffusion layer of proton exchange membrane fuel cells: Volume of fluid modeling and comparison with experiment [PDF]

open access: yes, 2018
This paper proposes a three-dimensional (3D) volume of fluid (VOF) study to investigate two-phase flow in the gas diffusion layer (GDL) of proton exchange membrane (PEM) fuel cells and liquid water distribution.
Jiao, K, Niu, Z, Wang, Y, Wu, J
core   +1 more source

Functionalization of Chitosan with Maleic Anhydride for Proton Exchange Membrane

open access: yesIndonesian Journal of Chemistry, 2018
Chitosan was modified by maleic anhydride, and it was then functionalized using heterogeneous and blending method to obtain the membrane. The results of the reaction between chitosan with maleic anhydride were signed by the new peak appears around 1475 ...
Muhammad Ridwan Septiawan   +4 more
doaj   +1 more source

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