Results 21 to 30 of about 51,895 (303)

Electrocatalytic asymmetric hydrogenation of α,β-unsaturated acids in a PEM reactor with cinchona-modified palladium catalysts

Electrochemistry Communications, 2020
We have developed an electrocatalytic asymmetric hydrogenation reaction using a proton-exchange membrane (PEM) reactor that employs a polymer electrolyte fuel cell and industrial electrolysis technologies.
Atsushi Fukazawa, Kenta Tanaka, Yasushi Hashimoto, Yasushi Sato, Mahito Atobe   +4 more
doaj   +1 more source

Ion exchange membranes based upon crosslinked sulfonated polyethersulfone for electrochemical applications [PDF]

, 2013
Synthesis and characterization of new ion exchange membranes made from chlorosulfonated polyethersul- fone (SO2Cl-PES) crosslinked by polyaminated crosslinking reagents have been performed.
FAUVARQUE, J.F, MABROUK, Walid, MATOUSSI, F., OGIER, Lionel, SOLLOGOUB, Cyrille, VIDAL, Serge   +5 more
core   +6 more sources

Real-time monitoring of proton exchange membrane fuel cell stack failure [PDF]

, 2016
Uneven pressure drops in a 75-cell 9.5-kWe proton exchange membrane fuel cell stack with a U-shaped flow configuration have been shown to cause localised flooding.
Brandon, NP, De Benedetti, L, Marquis, AJ, Offer, GJ, Parkes, MP, Wu, B   +5 more
core   +2 more sources

Current-Distribution Measurement in Polymer Electrolyte Water Electrolysis Equipment and Polymer Electrolyte Fuel Cell Using NMR Sensor

Journal of Thermal Science and Technology, 2009
In a polymer electrolyte fuel cell (PEFC), the current density through the polymer electrolyte membrane (PEM) is distributed along the electrode on the membrane electrode assembly (MEA).
Yasuo YOKOUCHI, Kuniyasu OGAWA, Tomoyuki HAISHI, Kohei ITO   +3 more
doaj   +1 more source

Subfreezing operation of polymer electrolyte fuel cells: Ice formation and cell performance loss [PDF]

, 2012
In this work, we investigate the cold-start operation of polymer electrolyte fuel cells (PEFCs) through high-resolution neutron radiography, experimental testing, theoretical evaluation, and comparison with model prediction.
Borup, RL, Mishler, J, Mukherjee, PP, Mukundan, R, Wang, Y   +4 more
core   +2 more sources

Flooding and performance of polymer electrolyte fuel cell, investigated by small-angle neutron scattering, neutron radiography and segmented electrode

Results in Physics, 2019
In order to elucidate the cell performance related to swelling or flooding of the polymer electrolyte membrane (Nafion®), we performed in-situ measurements of small-angle neutron scattering (SANS) and neutron radiography (NR) for a polymer electrolyte ...
Satoru Ueda, Satoshi Koizumi, Yasuyuki Tsutsumi   +2 more
doaj   +1 more source

Biomimetic flow fields for proton exchange membrane fuel cells: A review of design trends [PDF]

, 2020
Bipolar Plate design is one of the most active research fields in Polymer Electrolyte Membrane Fuel Cells (PEMFCs) development. Bipolar Plates are key components for ensuring an appropriate water management within the cell, preventing flooding and ...
Arredondo, C. H., Iranzo Paricio, Jose Alfredo, Kannan, A. M., Rosa Iglesias, Manuel Felipe   +3 more
core  

Temperature Control for a 5 kW Water-Cooled PEM Fuel Cell System for a Household Application

IEEE Access, 2019
Temperature control is indispensable for polymer electrolyte membrane fuel cell (PEMFC) systems to ensure its safety and efficiency when working continuously.
Wen-Jiang Zou, Young-Bae Kim
doaj   +1 more source

Modelling and Simulation of a Hydrogen-Based Hybrid Energy Storage System with a Switching Algorithm

World Electric Vehicle Journal, 2022
Currently, transitioning from fossil fuels to renewable sources of energy is needed, considering the impact of climate change on the globe. From this point of view, there is a need for development in several stages such as storage, transmission, and ...
Vishal Ram, Infantraj, Surender Reddy Salkuti   +2 more
doaj   +1 more source

Advances in perfluorosulfonic acid-based proton exchange membranes for fuel cell applications: A review

Chemical Engineering Journal Advances, 2022
: Among all fuel cells, proton exchange membrane fuel cells (PEMFCs) are appealing energy conversion devices in portable and transportation applications because of their higher efficiency, excellent ability to reduce air pollution, lightweight ...
Tushar Kanti Maiti, Jitendra Singh, Prakhar Dixit, Jagannath Majhi, Sakchi Bhushan, Anasuya Bandyopadhyay, Sujay Chattopadhyay   +6 more
doaj   +1 more source