Results 11 to 20 of about 33,730 (224)

A Reactive Methanol Filter with a Layer of Nanometer-sized Pt50-Sn50 Catalyst Particles Directly Deposited onto the Proton Exchange Membrane Surface

International Journal of Electrochemical Science, 2011
A thin layer of nanometer-sized Pt50-Sn50 catalyst particles deposited onto the proton exchange membrane (PEM) surface that served as methanol filter was prepared by the impregnation-reduction (IR) method to mitigate the methanol crossover and improve ...
Chieh-Hao Wan, Jyun-Ming Wei, Meng-Tsun Lin, Chien-Heng Lin   +3 more
doaj   +1 more source

Electro-Osmotic Flow of Water–Methanol Mixtures Through Nafion Membranes Revisited: Composition and Temperature Dependence

Frontiers in Energy Research, 2022
The electro-osmotic drag coefficient of water and methanol mixtures through Nafion 117 membranes was measured as a function of the composition at several temperatures between 25 and 60°C using a two-compartment capillary cell with Ag/AgCl electrodes. The
Horacio R. Corti, Liliana Trevani
doaj   +1 more source

Experimental measurement technique for the assessment of the fuel crossover diffusion coefficient in the membrane electrode assembly of a direct methanol fuel cell [PDF]

, 2017
Since the cross-over still seems to be the main issue of the direct methanol fuel cells, an experimental evaluation of the diffusive cross-over is performed.
Borello, Domenico, Calabriso, Andrea, Cedola, Luca, Santori, Simone G.   +3 more
core   +1 more source

Synthesis and coordination chemistry of 2-(di-2-pyridylamino)pyrimidine; structural aspects of spin crossover in an Fe(II) complex [PDF]

, 2012
This paper was accepted on February 26 20122-(Di-2-pyridylamino)pyrimidine (L), a potentially ditopic tetradentate ligand, was synthesized from commercially available di-2-pyridylamine and 2-chloropyrimidine.
Addison, Amoore, Amoore, Antonioli, Atmani, Balzani, Barbour, Bloch, Boujemma Moubaraki, Brooker, Christopher J. Sumby, Domaga?a, Halcrow, Halcrow, Hayami, Janiak, Kaes, Keith S. Murray, Kharasch, Martin, Mosny, Murray, Murray, Neville, Neville, Olguin, Quesada, Quesada, Quesada, Rachel S. Crees, Real, Real, Ross, Ross, Sheldrick, Sumby, Sumby, Sumby, Sumby   +38 more
core   +2 more sources

On the Proton Conductivity of Nafion-Faujasite Composite Membranes for Low Temperature Direct Methanol Fuel Cells. [PDF]

, 2011
Although zeolites are introduced to decrease methanol crossover of Nafion membranes for direct methanol fuel cells (DMFCs), little is known about the effect of their intrinsic properties and the interaction with the ionomer.
Désilets, F, Felice, V, Licoccia, S, Mecheri, B, Tavares, AC, Zhang, Z   +5 more
core   +1 more source

Suppressing Methanol Crossover with Nanometer-Sized Pt3Sn Particles Self-Assembled on a Nafion Membrane Surface

International Journal of Electrochemical Science, 2013
In this paper, 5 and 10 poly(allylamine hydrochloride) (PAH)/poly(styrene sulfonic acid sodium salt) (PSS) bi-layers with dispersed Pt3Sn alloy nano-particles are self-assembled onto both sides of the Nafion-117 membrane to suppress methanol crossover ...
Chien-Heng Lin, Chieh-Hao Wan, Weite Wu
doaj   +1 more source

Investigation of Methanol Crossover and Water Flux in an Air-Breathing Direct Methanol Fuel Cell

International Journal of Electrochemical Science, 2015
An air-breathing direct methanol fuel cell (DMFC) is constructed to investigate methanol crossover and water flux by altering flow rate and concentration of methanol solution.
Qi Wang, Guoxiong Wang, Xing Lu, Chunhuan Chen, Zhiqiang Li, Gongquan Sun   +5 more
doaj   +1 more source

Faradaic Efficiencies for Methanol Oxidation in Proton Exchange Membrane Electrolysis and Fuel Cells with Various Anode Catalysts

International Journal of Electrochemical Science, 2019
The energy efficiency of a direct methanol fuel cell (DMFC) is dependent on the cell voltage, crossover of oxygen and/or methanol through the polymer electrolyte membrane, and stoichiometry of the methanol oxidation reaction (i.e., the average number of ...
Rakan M. Altarawneh
doaj   +1 more source

Elucidating the Water and Methanol Dynamics in Sulfonated Polyether Ether Ketone Nanocomposite Membranes Bearing Layered Double Hydroxides

Membranes, 2022
Conventional Nafion membranes demonstrate a strong affinity for methanol, resulting in a high fuel crossover, poor mechanical stability, and thus poor performance in direct methanol fuel cells (DMFCs). This study involves the synthesis and physiochemical
Ernestino Lufrano, Isabella Nicotera, Apostolos Enotiadis, Muhammad Habib Ur Rehman, Cataldo Simari   +4 more
doaj   +1 more source

Soft-SAFT modeling of vapour liquid equilibria of nitriles and their mixtures [PDF]

, 2010
Nitriles are strong polar compounds showing a highly non-ideal behavior, which makes them challenging systems from a modeling point of view; in spite of this, accurate predictions for the vapor-liquid equilibria of these systems are needed, as some of ...
Belkadi, Abdelkrim, Gerbaud, Vincent, Hadj-Kali, Mohamed, Llovell, Felix, Vega, Lourdes F.   +4 more
core   +2 more sources