Results 281 to 290 of about 269,863 (349)
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Recent advances in hydrogen production through proton exchange membrane water electrolysis – a review

Sustainable Energy & Fuels, 2023
Proton exchange membrane (PEM) water electrolysis is recognized as the most promising technology for the sustainable production of green hydrogen from water and intermittent renewable energy sources.
S. S. Kumar, Hankwon Lim
semanticscholar   +1 more source

Ordered Membrane Electrode Assembly with Drastically Enhanced Proton and Mass Transport for Proton Exchange Membrane Water Electrolysis.

Nano letters (Print), 2023
In this work, an ordered membrane electrode assembly (MEA) based on a cone Nafion array with gradient Nafion distribution, tightly bonded catalytic layer/proton exchange membrane (CL/PEM) interface, and abundant vertical channels has been engineered by ...
Bin Wang   +9 more
semanticscholar   +1 more source

Synthesis and Characterization of Polyurethanic Proton Exchange Membranes

Journal of Fuel Cell Science and Technology, 2011
Novel proton exchange membranes have been prepared by in synthesis functionalization of a polyurethane matrix with a sulfonic group containing chain terminals. The synthesis procedure was based on the use of two polyethylene glycols with nominal molecular weight of 300 and 1 k and 4,4′ dicyclohexylmethane diisocyanate in presence of the sodium salt of ...
BOTTINO, ALDO   +3 more
openaire   +2 more sources

Advances in Oxygen Evolution Electrocatalysts for Proton Exchange Membrane Water Electrolyzers

Advanced Energy Materials, 2022
Proton exchange membrane water electrolyzer (PEMWE) technology is of interest in the context of electrocatalytic hydrogen generation from renewable energies.
Zhichao Chen   +9 more
semanticscholar   +1 more source

Life cycle assessment of hydrogen from proton exchange membrane water electrolysis in future energy systems

open access: yesApplied Energy, 2019
This study discusses the potential of H2 production by proton exchange membrane water electrolysis as an effective option to reduce greenhouse gas emissions in the hydrogen sector.
Cristina De La Rua, Thomas Hamacher
exaly   +2 more sources

A comparison of alkaline and proton exchange membrane electrolyzers

Russian Journal of Physical Chemistry A, 2008
Faraday efficiencies and energy consumptions of a small commercial proton exchange membrane (PEM) and an alkaline electrolyzer designed at our laboratory and equipped with different cathode materials were determined. Our experimental data indicate that the alkaline electrolyzer has a higher Faraday efficiency than the PEM electrolyzer, but, on the ...
Stojić, Dragica Lj.   +3 more
openaire   +2 more sources

Porous Flow Field for Next-Generation Proton Exchange Membrane Fuel Cells: Materials, Characterization, Design, and Challenges.

Chemical Reviews, 2022
Porous flow fields distribute fuel and oxygen for the electrochemical reactions of proton exchange membrane (PEM) fuel cells through their pore network instead of conventional flow channels. This type of flow fields has showed great promises in enhancing
Guobin Zhang   +11 more
semanticscholar   +1 more source

Water-hydroxide trapping in cobalt tungstate for proton exchange membrane water electrolysis

Science
The oxygen evolution reaction is the bottleneck to energy-efficient water-based electrolysis for the production of hydrogen and other solar fuels. In proton exchange membrane water electrolysis (PEMWE), precious metals have generally been necessary for ...
Ranit Ram   +18 more
semanticscholar   +1 more source

Proton Transfer in Proton Exchange Membrane Based on RDF

Advanced Materials Research, 2011
PEM fuel cell is the most promising application as an automotive power. Proton transfer in PEM is one of important factors to understand the performance of PEM fuel cell. In this paper, the proton transfer mechanisms are analyzed by the molecular simulation based on the basic principle of molecular dynamics.
Zhe Sun   +4 more
openaire   +1 more source

Mesoscale Simulation of Proton Transport in Proton Exchange Membranes

The Journal of Physical Chemistry C, 2012
Previous efforts to model proton transport through fuel cell membranes have largely focused on disparate length scales: molecular dynamics at the atomistic level and fuel cell stack engineering app...
Ryan Jorn, Gregory A. Voth
openaire   +1 more source

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