electrolytic hydrogen Articles
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Potential applications of amorphous/metallic glassy alloys as hydrogen-permeable membranes for hydrogen production and bipolar plates for PEFC
The potential of amorphous/metallic glassy alloys as hydrogen-permeable membranes for hydrogen production and as bipolar plates for Polymer Electrolyte Fuel Cells (PEFCs) was investigated in this paper. Firstly, the hydrogen permeation of the melt-spun (Ni0.6Nb0.4)70Zr30-xTax (x = 5, 10, 15, 20 at%) alloys was measured. As a result, it was found that the hydrogen permeability of the alloys ...
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Exergetic efficiency of a PEM electrolyser at various operating temperatures and pressures
This paper presents a comprehensive exergy analysis on a large scale 12,900kW PEM electrolyser at various operating temperatures and pressures. Calculations of physical exergy, mass flow rates and exergetic efficiency are performed at temperatures (T/To) and pressures (P/Po) ranging from 1 to 1.4 and 1 to 10, respectively. The results showed that at 1 atm (P/Po=1), the exergetic efficiency of an ...
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US work on technical and economic aspects of electrolytic, thermochemical, and hybrid processes for hydrogen production at temperatures below 550°C
Hydrogen demand is increasing, but there are few options for affordable hydrogen production free of greenhouse gas emissions. Nuclear power is one of the most promising options. Most research is focused on high-temperature electrolytic and thermochemical processes for nuclear-generated hydrogen, but it will be many years before very high temperature reactors become commercially available. For ...
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A comparative evaluation of palladium and platinum nanoparticles as catalysts in proton exchange membrane electrochemical cells
The goal of the present study is the development and comparative characterisation of carbon-supported and nanostructured Pd- and Pt-based electrocatalysts for hydrogen oxidation in Proton Exchange Membrane (PEM) H2/O2(air) fuel cells and proton reduction in PEM water electrolysers. Catalysts have been synthesised in a solution using a combined impregnation/reduction polyol method. They have been ...
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Cheaper Solution to Producing Hydrogen by Continuous Splitting of Water
For the first time, scientists from the Department of Energy’s SLAC National Accelerator Laboratory and Stanford University have demonstrated that an inexpensive catalyst can split water and produce hydrogen gas continuously for hours in the extreme environment of a commercial device. Stanford graduate student McKenzie Hubert with equipment used to test a cheap alternative to an expensive ...
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