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Nanoscale Ni as a catalyst in MgH2 for hydrogen storage material
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Journal Article
Nanoscale Ni as a catalyst in MgH2 for hydrogen storage material
2021
Overview
Supplying hydrogen to industrial users is now a major business around the world. One of the problems, before hydrogen can be implemented into today’s infrastructure is storing the hydrogen. In this report, we introduced a high-pressure milling method for preparing the MgH 2 catalyzed with Ni nanoparticle. We have reactively milled the MgH 2 + 2 mol % Ni, which has size ∼90 nm, under 100 bar of hydrogen. The structural changes during milling were characterized by XRD and high-resolution scanning electron microscopy. The hydrogen sorption properties were studied by gravimetric analysis. As the results, it was showed that the milling process reduced into 2 h. The sorption kinetics was proceeding 5.3 wt% of hydrogen around 5 min at 300°C, while desorption in 50 mbar was completed within 4 min. Preparing the Mg-based hydrides under high pressure with 2 mol% Ni in nanoscale as catalyst improved the hydrogen storage properties and decreased the milling time, as well.
Publisher
IOP Publishing
Subject
